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10 years agoclk: divider: add CLK_DIVIDER_READ_ONLY flag
Heiko Stuebner [Fri, 23 May 2014 13:02:15 +0000 (18:32 +0530)]
clk: divider: add CLK_DIVIDER_READ_ONLY flag

From: Heiko Stuebner <heiko@sntech.de>

Similar to muxes which already have a read-only flag there sometimes
exist dividers which should not be changed by the clock framework
but whose value still should be readable.

Therefore add a READ_ONLY flag similar to the mux-one to clk-divider

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
[changed flag bit to BIT(5) as suggested by Tomasz Figa]
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Acked-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Max Schwarz <max.schwarz@online.de>
Tested-by: Max Schwarz <max.schwarz@online.de>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: shmobile: Add R8A7740-specific clock support
Ulrich Hecht [Fri, 23 May 2014 13:27:15 +0000 (15:27 +0200)]
clk: shmobile: Add R8A7740-specific clock support

Driver for the R8A7740's clocks that are too specific to be supported by a
generic driver.

Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: tegra: Initialize xusb clocks
Andrew Bresticker [Thu, 15 May 2014 00:33:00 +0000 (17:33 -0700)]
clk: tegra: Initialize xusb clocks

Initialize the XUSB-related clocks with appropriate parents and rates
for both Tegra114 and Tegra124.

Signed-off-by: Jim Lin <jilin@nvidia.com>
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: tegra: Fix xusb_hs_src clock hierarchy
Andrew Bresticker [Thu, 15 May 2014 00:32:59 +0000 (17:32 -0700)]
clk: tegra: Fix xusb_hs_src clock hierarchy

Currently the Tegra1x4 clock init code hard-codes the mux setting
for xusb_hs_src and treats it as a fixed-factor clock.  It is,
however, a mux which can be parented by either xusb_ss_src/2 or
pll_u_60M.  Add the fixed-factor clock xusb_ss_div2 and put an
entry in periph_clks[] for the xusb_hs_src mux.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: tegra: Fix xusb_fs_src mux
Jim Lin [Thu, 15 May 2014 00:32:58 +0000 (17:32 -0700)]
clk: tegra: Fix xusb_fs_src mux

The parent-to-index mapping for xusb_fs_src is incorrect.
Fix it by adding a mux table.

Signed-off-by: Jim Lin <jilin@nvidia.com>
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: tegra: Enable hardware control of PLLE
Jim Lin [Thu, 15 May 2014 00:32:57 +0000 (17:32 -0700)]
clk: tegra: Enable hardware control of PLLE

Enable hardware control of PLLE spread-spectrum, IDDQ, and enable
controls when enabling PLLE.  The hardware (e.g. XUSB) using PLLE
will use these controls for power-saving optimizations.

Signed-off-by: Jim Lin <jilin@nvidia.com>
Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: Add clock driver for AXM55xx SoC
Anders Berg [Thu, 15 May 2014 13:42:25 +0000 (15:42 +0200)]
clk: Add clock driver for AXM55xx SoC

Add clk driver to support clock blocks found on the AXM55xx devices. The driver
provides clock implementations for three different types of clock devices on
the AXM55xx device: PLL clock, a clock divider and a clock mux.

Signed-off-by: Anders Berg <anders.berg@lsi.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: shmobile: mstp: Fix the is_enabled() operation
Laurent Pinchart [Thu, 22 May 2014 18:02:14 +0000 (20:02 +0200)]
clk: shmobile: mstp: Fix the is_enabled() operation

The MSTP[SC]R registers have clock stop bits, not clock enable bits. The
bit value should thus be inverted in the is_enabled() operation.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: Add of_clk_get_by_clkspec() helper
Sylwester Nawrocki [Mon, 19 May 2014 17:22:50 +0000 (19:22 +0200)]
clk: Add of_clk_get_by_clkspec() helper

This patch adds of_clk_get_by_clkspec() helper function, which does only
a struct clk lookup from the clock providers. It is used in the subsequent
patch where parsing of a clock from device tree and the lookup from
providers needed to be split.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: impd1: add pclk clocks
Linus Walleij [Tue, 15 Apr 2014 08:29:45 +0000 (10:29 +0200)]
clk: impd1: add pclk clocks

The IM-PD1 PrimeCells all have pclk assignments though this clock
cannot be controlled, and we need to provide this as a dummy
clock for the PL061 GPIO driver to probe, so let's assign it to
all the cells on the board.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoMerge tag 'zynq-clk-for-3.16' of git://git.xilinx.com/linux-xlnx into clk-next-zynq
Mike Turquette [Wed, 21 May 2014 04:48:38 +0000 (21:48 -0700)]
Merge tag 'zynq-clk-for-3.16' of git://git.xilinx.com/linux-xlnx into clk-next-zynq

arm: Xilinx Zynq clk patches for v3.16

- Keep debug clocks in bootup state
- Fix email address in si570

10 years agoclk: si570: Fix email address specifiction
Michal Simek [Thu, 3 Apr 2014 15:05:02 +0000 (17:05 +0200)]
clk: si570: Fix email address specifiction

Just fix missing ">" in the email.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
10 years agoclk: qcom: Fix msm8660 GCC probe
Stephen Boyd [Fri, 16 May 2014 17:05:14 +0000 (10:05 -0700)]
clk: qcom: Fix msm8660 GCC probe

When consolidating the msm8660 GCC probe code I forgot to keep
around these temporary clock registrations. Put them back so the
clock tree is not entirely orphaned.

Fixes: 49fc825f0cc2 (clk: qcom: Consolidate common probe code)
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoMerge branch 'clk-fixes' into clk-next
Mike Turquette [Fri, 16 May 2014 23:09:46 +0000 (16:09 -0700)]
Merge branch 'clk-fixes' into clk-next

10 years agoclk: tegra: Fix wrong value written to PLLE_AUX
Tuomas Tynkkynen [Fri, 16 May 2014 13:50:20 +0000 (16:50 +0300)]
clk: tegra: Fix wrong value written to PLLE_AUX

The value written to PLLE_AUX was incorrect due to a wrong variable
being used. Without this fix SATA does not work.

Cc: stable@vger.kernel.org
Signed-off-by: Tuomas Tynkkynen <ttynkkynen@nvidia.com>
Tested-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: improved changelog]

10 years agoDocumentation: clock: fixed-clock: Remove unsupported 'gpios' property
Fabio Estevam [Fri, 9 May 2014 03:01:50 +0000 (00:01 -0300)]
Documentation: clock: fixed-clock: Remove unsupported 'gpios' property

Remove the 'gpios' property from the documentation as this is something that the
current fixed clock driver does not handle.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk/versatile: export symbols for impd1
Arnd Bergmann [Thu, 8 May 2014 14:56:16 +0000 (16:56 +0200)]
clk/versatile: export symbols for impd1

The impd1 code on mach-integrator can be a loadable module,
so we have to export icst_clk_register, integrator_impd1_clk_init
and integrator_impd1_clk_exit.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoMerge tag 'clk-hisi-for-v3.16' of https://git.kernel.org/pub/scm/linux/kernel/git...
Mike Turquette [Thu, 15 May 2014 06:16:32 +0000 (23:16 -0700)]
Merge tag 'clk-hisi-for-v3.16' of https://git.kernel.org/pub/scm/linux/kernel/git/hzhuang1/linux into clk-next-hisilicon

enable hix5hd2 clock

10 years agoclk: sunxi: Fixup clk_sunxi_mmc_phase_control to take a clk rather then a hw_clk
Hans de Goede [Mon, 12 May 2014 12:04:47 +0000 (14:04 +0200)]
clk: sunxi: Fixup clk_sunxi_mmc_phase_control to take a clk rather then a hw_clk

__clk_get_hw is supposed to be used by clk providers, not clk consumers.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoMerge tag 'clk-mvebu-3.16' of git://git.infradead.org/linux-mvebu into clk-next-mvebu
Mike Turquette [Tue, 13 May 2014 23:04:19 +0000 (16:04 -0700)]
Merge tag 'clk-mvebu-3.16' of git://git.infradead.org/linux-mvebu into clk-next-mvebu

clk mvebu changes for v3.16

 - orion5x: brand new driver

10 years agoclk: shmobile: r8a7779: Add MSTP clock support
Simon Horman [Thu, 17 Apr 2014 23:05:51 +0000 (08:05 +0900)]
clk: shmobile: r8a7779: Add MSTP clock support

Add MSTP clock support for the r8a7779 SoC

The only change required appears to be to note a new
compatibility string in the bindings.

Cc: devicetree@vger.kernel.org
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: shmobile: r8a7779: Add clocks support
Simon Horman [Thu, 17 Apr 2014 23:05:50 +0000 (08:05 +0900)]
clk: shmobile: r8a7779: Add clocks support

The R8A7779 SoC has several clocks that are too custom to be supported in a
generic driver. Those clocks are all fixed rate clocks with multiplier and
divisor set according to boot mode configuration.

Based on work for R-Car Gen2 SoCs by Laurent Pinchart.

Cc: devicetree@vger.kernel.org
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoMerge tag 'socfpga-clk-update-for-v3.16' of git://git.rocketboards.org/linux-socfpga...
Mike Turquette [Tue, 13 May 2014 02:11:13 +0000 (19:11 -0700)]
Merge tag 'socfpga-clk-update-for-v3.16' of git://git.rocketboards.org/linux-socfpga-next into clk-next-socfpga

Adds support getting the divider registers for the MAIN PLL that was once
thought to be hidden.

10 years agoclk: Improve clock-indices binding documentation
Geert Uytterhoeven [Mon, 14 Apr 2014 17:00:40 +0000 (19:00 +0200)]
clk: Improve clock-indices binding documentation

Improve the wording for the clock-indices binding documentation.
Also replace "empty nodes" by "empty strings", as reported before by Sergei
Shtylyov.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: Improve clk_ops documentation
Geert Uytterhoeven [Tue, 22 Apr 2014 13:11:42 +0000 (15:11 +0200)]
clk: Improve clk_ops documentation

General:
  - Add parameter names to .round_rate() and .set_rate().

Documentation/clk.txt:
  - Add missing parameter for .set_rate(),
  - Add missing .debug_init().

include/linux/clk-provider.h:
  - Add parent rate documentation for .round_rate(),
  - Reorder documentation to match implementation order,
  - Add missing documentation for .init().

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: Fixup spacing in comments
Geert Uytterhoeven [Tue, 22 Apr 2014 13:11:41 +0000 (15:11 +0200)]
clk: Fixup spacing in comments

- Remove spaces in front of TABs,
- Correct indentation for some CLK_* flag descriptions.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoMerge branch 'clk-fixes' into clk-next
Mike Turquette [Mon, 12 May 2014 23:55:33 +0000 (16:55 -0700)]
Merge branch 'clk-fixes' into clk-next

10 years agoclk: shmobile: clk-mstp: change to using clock-indices
Ben Dooks [Tue, 15 Apr 2014 16:06:34 +0000 (17:06 +0100)]
clk: shmobile: clk-mstp: change to using clock-indices

With the addition of clock-indices, we need to change the renesas
clock implementation to use these instead of the local definition
of "renesas,clock-indices".

Since this will break booting with older device trees, we add a
simple auto-detection of which properties are present.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: socfpga: add divider registers to the main pll outputs
Dinh Nguyen [Mon, 12 May 2014 17:27:22 +0000 (12:27 -0500)]
clk: socfpga: add divider registers to the main pll outputs

The C0(mpu_clk), C1(main_clk), and C2(dbg_base_clk) outputs from the main
PLL go through a pre-divider before coming into the system. These registers
were hidden for the CycloneV platform, but are now used for the ArriaV
platform.

This patch updates the clock driver to read the div-reg property for the
socfpga-periph-clk clocks. Also moves the div_mask define to clk.h for re-use.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
10 years agoclk: hisi: add clk-hix5hd2.c
Zhangfei Gao [Mon, 21 Apr 2014 04:07:27 +0000 (12:07 +0800)]
clk: hisi: add clk-hix5hd2.c

Signed-off-by: Haifeng Yan <haifeng.yan@linaro.org>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
10 years agoclk: hisi: add hisi_clk_register_gate
Zhangfei Gao [Tue, 22 Apr 2014 07:42:47 +0000 (15:42 +0800)]
clk: hisi: add hisi_clk_register_gate

Add hisi_clk_register_gate register clk gate table

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
10 years agoclk: hisi: use clk_register_mux_table in hisi_clk_register_mux
Zhangfei Gao [Mon, 21 Apr 2014 03:35:21 +0000 (11:35 +0800)]
clk: hisi: use clk_register_mux_table in hisi_clk_register_mux

Platform hix5hd2 use mux table, so use clk_register_mux_table instead

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
10 years agoclk: sunxi: Implement MMC phase control
Emilio López [Fri, 2 May 2014 15:57:16 +0000 (17:57 +0200)]
clk: sunxi: Implement MMC phase control

HdG: add header exporting clk_sunxi_mmc_phase_control

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: sunxi: factors: automatic reparenting support
Emilio López [Fri, 2 May 2014 15:57:15 +0000 (17:57 +0200)]
clk: sunxi: factors: automatic reparenting support

This commit implements .determine_rate, so that our factor clocks can be
reparented when needed.

Signed-off-by: Emilio López <emilio@elopez.com.ar>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: qcom: Various fixes for MSM8960's global clock controller
Kumar Gala [Fri, 4 Apr 2014 16:32:56 +0000 (11:32 -0500)]
clk: qcom: Various fixes for MSM8960's global clock controller

* Remove CE2_SLEEP_CLK, doesn't exist on 8960 family SoCs
* Fix incorrect offset for PMIC_SSBI2_RESET
* Fix typo:
SIC_TIC -> SPS_TIC_H
SFAB_ADM0_M2_A_CLK -> SFAB_ADM0_M2_H_CLK
* Fix naming convention:
SFAB_CFPB_S_HCLK -> SFAB_CFPB_S_H_CLK
SATA_SRC_CLK -> SATA_CLK_SRC

Signed-off-by: Kumar Gala <galak@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: qcom: Add basic support for APQ8064 global clock controller clocks
Kumar Gala [Fri, 4 Apr 2014 16:31:29 +0000 (11:31 -0500)]
clk: qcom: Add basic support for APQ8064 global clock controller clocks

The APQ8064 and MSM8960 share a significant amount of clock data and
code between the two SoCs.  Rather than duplicating the data we just add
support for a unqiue APQ8064 clock table into the MSM8960 code.

For now add just enough clocks to get a basic serial port going on an
APQ8064 device.

Signed-off-by: Kumar Gala <galak@codeaurora.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: trivial conflict due to missing ipq8064 support]

10 years agoclk: qcom: Consolidate common probe code
Stephen Boyd [Sat, 22 Mar 2014 00:59:37 +0000 (17:59 -0700)]
clk: qcom: Consolidate common probe code

Most of the probe code is the same between all the different
clock controllers. Consolidate the code into a common.c file.
This makes changes to the common probe parts easier and reduces
chances for bugs.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: Ignore error and NULL pointers passed to clk_{unprepare, disable}()
Stephen Boyd [Wed, 26 Mar 2014 23:06:37 +0000 (16:06 -0700)]
clk: Ignore error and NULL pointers passed to clk_{unprepare, disable}()

This simplifies error paths in drivers that use optional clocks
by allowing the NULL or error pointer to be passed
unconditionally.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: Consolidate recalc rate logic
Stephen Boyd [Wed, 26 Mar 2014 23:06:36 +0000 (16:06 -0700)]
clk: Consolidate recalc rate logic

The same if-else statement exists four times to recalculate the
rate of a clock. Consolidate this logic into a single function to
save some lines.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: Don't check for missing ops in clk_set_parent()
Stephen Boyd [Wed, 26 Mar 2014 23:06:35 +0000 (16:06 -0700)]
clk: Don't check for missing ops in clk_set_parent()

We dereference clk->ops during clock registration so this check
for NULL ops can't possibly ever be true.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoARM: dts: use real clocks for bcm21664
Alex Elder [Mon, 21 Apr 2014 21:26:27 +0000 (16:26 -0500)]
ARM: dts: use real clocks for bcm21664

Replace the "fake" fixed-rate clocks used previously for the
bcm21664 family with "real" ones.

Signed-off-by: Alex Elder <elder@linaro.org>
Acked-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm21664: use common clock framework
Alex Elder [Mon, 21 Apr 2014 21:26:26 +0000 (16:26 -0500)]
clk: bcm21664: use common clock framework

Define the set of CCUs and provided clocks sufficient to satisfy the
needs of all the existing clock references for BCM21664.  Replace
the "fake" fixed-rate clocks used previously with "real" ones.

Note that only the minimal set of these clocks and CCUs is defined
here.  More clock definitions will need to be added as required by
the addition of additional drivers.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoARM: dts: define clock binding for bcm21664
Alex Elder [Mon, 21 Apr 2014 21:26:25 +0000 (16:26 -0500)]
ARM: dts: define clock binding for bcm21664

Document the device tree binding for Broadcom BCM28164 clock control
units and clocks.  This SoC uses Kona CCUs, similar to the BCM281XX
SoC family.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoARM: dts: revise kona clock binding document
Alex Elder [Mon, 21 Apr 2014 21:26:24 +0000 (16:26 -0500)]
ARM: dts: revise kona clock binding document

The next patch defines a binding for a new Broadcom SoC that uses
Kona style CCUs for its clocks.  Update the generic Kona clock
binding document so it's more natural to accomodate the definitions
of additional SoC families.

Specifically:
    - Define the compatible string values generically, referring
      to specific per-model values later in the document.
    - Put the device tree example immediately after the required
      properties listing, before the tables of SoC-specific values.
    - Clearly identify the start of the section defining specific
      values related to the BCM281XX family
    - Add a list of the specific BCM281XX family compatible strings.
    - Reword the description of the table slightly.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm281xx: move compatible string definitions
Alex Elder [Mon, 21 Apr 2014 21:26:23 +0000 (16:26 -0500)]
clk: bcm281xx: move compatible string definitions

The Broadcom 281xx clock code uses a #define for the compatible
string for it's clock control units (CCUs).  Rather than defining
those in the C source file, define them in the header file that's
shared by both the code and the device tree source file (along with
all the clock ids).

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm281xx: add clock hysteresis support
Alex Elder [Mon, 21 Apr 2014 21:11:43 +0000 (16:11 -0500)]
clk: bcm281xx: add clock hysteresis support

Add support for clock gate hysteresis control.  For now, if it's
defined for a clock, it's enabled.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm281xx: add clock policy support
Alex Elder [Mon, 21 Apr 2014 21:11:42 +0000 (16:11 -0500)]
clk: bcm281xx: add clock policy support

Add support for CCU policy engine control, and also for setting the
mask bits for bus clocks that require a policy change to get
activated.  This includes adding validity checking framework for
CCUs, to validate the policy fields if defined.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm281xx: define CCU clock data statically
Alex Elder [Mon, 21 Apr 2014 21:11:41 +0000 (16:11 -0500)]
clk: bcm281xx: define CCU clock data statically

Rather than "manually" setting up each CCU's clock entries at run
time, define a flexible array of generic Kona clock structures
within the CCU structure itself.  Each of these entries contains
generic kona clock information (like its CCU pointer and clock
framework initialization data).  Each also has a pointer to a
structure contianing clock type-dependent initialization data
(like register definitions).

Since we'll iterate over these arrays we need to be sure they have
slots for all potential clock index values.  (E.g. for the root CCU
we must have at least BCM281XX_ROOT_CCU_CLOCK_COUNT slots.)  To
ensure this we always define an extra entry and fill it using the
special initializer LAST_KONA_CLK.

Just about everything we need to know about a clock can be defined
statically.  As a result, kona_clk_setup() can be changed to take
just a kona_clk structure as its argument, and peri_clk_setup() can
be simplified.  With the information pre-defined we are also able
to handle most clock setup genericially.  We can do away with the
CCU-specific callback functions that previously were needed to set
up the entries in CCU's clock array.

Move the definition of the ccu_data structure down in "clk-kona.h"
to avoid a forward dependency.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm281xx: initialize CCU structures statically
Alex Elder [Mon, 21 Apr 2014 21:11:40 +0000 (16:11 -0500)]
clk: bcm281xx: initialize CCU structures statically

We know up front how many CCU's we'll support, so there's no need to
allocate their data structures dynamically.  Define a macro
KONA_CCU_COMMON() to simplify the initialization of many of the
fields in a ccu_data structure.  Pass the address of a statically
defined CCU structure to kona_dt_ccu_setup() rather than having that
function allocate one.

We also know at build time how many clocks a given CCU will provide,
though the number of of them for each CCU is different.  Record the
number of clocks we need in the CCU's clk_onecell_data struct
(which is used when we register the CCU with the common clock code
as a clock provider).  Rename that struct field "clk_data" (because
"data" alone gets a little confusing).

Use the known clock count to move the allocation of each CCU's
clocks array into ccu_clks_setup() rather than having each CCU's
setup callback function do it.

(The real motivation behind all of this is that we'll be doing some
static initialization of some additional CCU-specific data soon.)

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm281xx: change some symbol names
Alex Elder [Mon, 21 Apr 2014 21:11:39 +0000 (16:11 -0500)]
clk: bcm281xx: change some symbol names

As I developed the bcm281xx clock code I understood there were
restrictions on device tree "compatible" strings names, and as a
result "bcm11351" was used in places despite the part family being
more properly called "bcm281xx".  This can be a little confusing.

In some cases I went to far and things using "bcm11351" when that
was not necessary.

This patch remedies this.  It renames the symbol used to define the
"compatible" string (but not its value) so it uses "BCM281XX".
Similarly, the name names provided to the CLK_OF_DECLARE() macro
are changed, hoping to minimize the number of places that the
confusing "11351" string is used.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm281xx: use init_data.name for clock name
Alex Elder [Mon, 21 Apr 2014 21:11:38 +0000 (16:11 -0500)]
clk: bcm281xx: use init_data.name for clock name

Use the init_data.name field to hold the name of a Kona clock rather
than duplicating it.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: bcm281xx: warn if ccu_wait_bit() fails
Alex Elder [Mon, 21 Apr 2014 21:11:37 +0000 (16:11 -0500)]
clk: bcm281xx: warn if ccu_wait_bit() fails

Don't let a failure of ccu_wait_bit() go unnoticed.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: divider: Optimize clk_divider_bestdiv loop
Maxime COQUELIN [Wed, 29 Jan 2014 16:24:08 +0000 (17:24 +0100)]
clk: divider: Optimize clk_divider_bestdiv loop

Currently, the for-loop used to try all the different dividers to find the
one that best fit tries all the values from 1 to max_div, incrementing by one.
In case of power-of-two, or table based divider, the loop isn't optimal.

Instead of incrementing by one, this patch provides directly the next divider.

Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: divider: Add round to closest divider
Maxime COQUELIN [Wed, 29 Jan 2014 16:24:07 +0000 (17:24 +0100)]
clk: divider: Add round to closest divider

In some cases, we want to be able to round the divider to the closest one,
instead than rounding up.

This patch adds a new CLK_DIVIDER_ROUND_CLOSEST flag to specify the divider
has to round to closest div, keeping rounding up as de default behaviour.

Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoclk: Fix slab corruption in clk_unregister()
Stephen Boyd [Fri, 18 Apr 2014 23:29:43 +0000 (16:29 -0700)]
clk: Fix slab corruption in clk_unregister()

When a clock is unregsitered, we iterate over the list of
children and reparent them to NULL (i.e. orphan list). While
iterating the list, we should use the safe iterators because the
children list for this clock is changing when we reparent the
children to NULL. Failure to iterate safely can lead to slab
corruption like this:

=============================================================================
BUG kmalloc-128 (Not tainted): Poison overwritten
-----------------------------------------------------------------------------

Disabling lock debugging due to kernel taint
INFO: 0xed0c4900-0xed0c4903. First byte 0x0 instead of 0x6b
INFO: Allocated in clk_register+0x20/0x1bc age=297 cpu=2 pid=70
 __slab_alloc.isra.39.constprop.42+0x410/0x454
 kmem_cache_alloc_trace+0x200/0x24c
 clk_register+0x20/0x1bc
 devm_clk_register+0x34/0x68
 0xbf0000f0
 platform_drv_probe+0x18/0x48
 driver_probe_device+0x94/0x360
 __driver_attach+0x94/0x98
 bus_for_each_dev+0x54/0x88
 bus_add_driver+0xe8/0x204
 driver_register+0x78/0xf4
 do_one_initcall+0xc4/0x17c
 load_module+0x19ac/0x2294
 SyS_init_module+0xa4/0x110
 ret_fast_syscall+0x0/0x48
INFO: Freed in clk_unregister+0xd4/0x140 age=23 cpu=2 pid=73
 __slab_free+0x38/0x41c
 clk_unregister+0xd4/0x140
 release_nodes+0x164/0x1d8
 __device_release_driver+0x60/0xb0
 driver_detach+0xb4/0xb8
 bus_remove_driver+0x5c/0xc4
 SyS_delete_module+0x148/0x1d8
 ret_fast_syscall+0x0/0x48
INFO: Slab 0xeec50b90 objects=25 used=0 fp=0xed0c5400 flags=0x4080
INFO: Object 0xed0c48c0 @offset=2240 fp=0xed0c4a00

Bytes b4 ed0c48b0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
Object ed0c48c0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
Object ed0c48d0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
Object ed0c48e0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
Object ed0c48f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
Object ed0c4900: 00 00 00 00 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  ....kkkkkkkkkkkk
Object ed0c4910: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
Object ed0c4920: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
Object ed0c4930: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5  kkkkkkkkkkkkkkk.
Redzone ed0c4940: bb bb bb bb                                      ....
Padding ed0c49e8: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
Padding ed0c49f8: 5a 5a 5a 5a 5a 5a 5a 5a                          ZZZZZZZZ
CPU: 3 PID: 75 Comm: mdev Tainted: G    B         3.14.0-11033-g2054ba5ca781 #35
[<c0014be0>] (unwind_backtrace) from [<c0012240>] (show_stack+0x10/0x14)
[<c0012240>] (show_stack) from [<c04b74a0>] (dump_stack+0x70/0xbc)
[<c04b74a0>] (dump_stack) from [<c00f7a78>] (check_bytes_and_report+0xbc/0x100)
[<c00f7a78>] (check_bytes_and_report) from [<c00f7c48>] (check_object+0x18c/0x218)
[<c00f7c48>] (check_object) from [<c00f7efc>] (__free_slab+0x104/0x144)
[<c00f7efc>] (__free_slab) from [<c04b6668>] (__slab_free+0x3dc/0x41c)
[<c04b6668>] (__slab_free) from [<c014c008>] (load_elf_binary+0x88/0x12b4)
[<c014c008>] (load_elf_binary) from [<c0105a44>] (search_binary_handler+0x78/0x18c)
[<c0105a44>] (search_binary_handler) from [<c0106fc0>] (do_execve+0x490/0x5dc)
[<c0106fc0>] (do_execve) from [<c0036b8c>] (____call_usermodehelper+0x134/0x168)
[<c0036b8c>] (____call_usermodehelper) from [<c000f048>] (ret_from_fork+0x14/0x2c)
FIX kmalloc-128: Restoring 0xed0c4900-0xed0c4903=0x6b

Fixes: fcb0ee6a3d33 (clk: Implement clk_unregister)
Cc: Jiada Wang <jiada_wang@mentor.com>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: stable@vger.kernel.org
10 years agoclk: Fix double free due to devm_clk_register()
Stephen Boyd [Fri, 18 Apr 2014 23:29:42 +0000 (16:29 -0700)]
clk: Fix double free due to devm_clk_register()

Now that clk_unregister() frees the struct clk we're
unregistering we'll free memory twice: first we'll call kfree()
in __clk_release() with an address kmalloc doesn't know about and
second we'll call kfree() in the devres layer. Remove the
allocation of struct clk in devm_clk_register() and let
clk_release() handle it. This fixes slab errors like:

=============================================================================
BUG kmalloc-128 (Not tainted): Invalid object pointer 0xed08e8d0
-----------------------------------------------------------------------------

Disabling lock debugging due to kernel taint
INFO: Slab 0xeec503f8 objects=25 used=15 fp=0xed08ea00 flags=0x4081
CPU: 2 PID: 73 Comm: rmmod Tainted: G    B         3.14.0-11032-g526e9c764381 #34
[<c0014be0>] (unwind_backtrace) from [<c0012240>] (show_stack+0x10/0x14)
[<c0012240>] (show_stack) from [<c04b74dc>] (dump_stack+0x70/0xbc)
[<c04b74dc>] (dump_stack) from [<c00f6778>] (slab_err+0x74/0x84)
[<c00f6778>] (slab_err) from [<c04b6278>] (free_debug_processing+0x2cc/0x31c)
[<c04b6278>] (free_debug_processing) from [<c04b6300>] (__slab_free+0x38/0x41c)
[<c04b6300>] (__slab_free) from [<c03931bc>] (clk_unregister+0xd4/0x140)
[<c03931bc>] (clk_unregister) from [<c02fb774>] (release_nodes+0x164/0x1d8)
[<c02fb774>] (release_nodes) from [<c02f8698>] (__device_release_driver+0x60/0xb0)
[<c02f8698>] (__device_release_driver) from [<c02f9080>] (driver_detach+0xb4/0xb8)
[<c02f9080>] (driver_detach) from [<c02f8480>] (bus_remove_driver+0x5c/0xc4)
[<c02f8480>] (bus_remove_driver) from [<c008c9b8>] (SyS_delete_module+0x148/0x1d8)
[<c008c9b8>] (SyS_delete_module) from [<c000ef80>] (ret_fast_syscall+0x0/0x48)
FIX kmalloc-128: Object at 0xed08e8d0 not freed

Fixes: fcb0ee6a3d33 (clk: Implement clk_unregister)
Cc: Jiada Wang <jiada_wang@mentor.com>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: stable@vger.kernel.org
10 years agoMerge tag 'socfpga-clk-fix-for-3.15' of git://git.rocketboards.org/linux-socfpga...
Mike Turquette [Fri, 25 Apr 2014 15:33:28 +0000 (08:33 -0700)]
Merge tag 'socfpga-clk-fix-for-3.15' of git://git.rocketboards.org/linux-socfpga-next into clk-fixes-socfpga

clk: socfpga: clock fix for v3.15

Currently on 3.15-rc1, the SOCFPGA platform is unable to boot. This patch
fixes the issue and allows the platform to boot.

10 years agoclk: socfpga: fix clock driver for 3.15
Dinh Nguyen [Mon, 14 Apr 2014 12:59:32 +0000 (07:59 -0500)]
clk: socfpga: fix clock driver for 3.15

commit [1771b10d6 clk: respect the clock dependencies in of_clk_init]
exposed a flaw in the socfpga clock driver and prevents the platform
from booting on 3.15-rc1.

Because the "altr,clk-mgr" is not really a clock, it should not be using
CLK_OF_DECLARE, instead we should be mapping the clk-mgr's base address
one of the functional clock init function. Use the socfpga_pll_init function
to map the clk_mgr_base_addr as this clock should always be initialized first.

Signed-off-by: Dinh Nguyen <dinguyen@altera.com>
Tested-by: Pavel Machek <pavel@denx.de>
10 years agoclk: divider: Fix best div calculation for power-of-two and table dividers
Maxime COQUELIN [Wed, 29 Jan 2014 16:24:06 +0000 (17:24 +0100)]
clk: divider: Fix best div calculation for power-of-two and table dividers

The divider returned by clk_divider_bestdiv() is likely to be invalid in case
of power-of-two and table dividers when CLK_SET_RATE_PARENT flag isn't set.

Fixes boot on STiH416 platform.

Signed-off-by: Maxime Coquelin <maxime.coquelin@st.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
[mturquette@linaro.org: trivial merge conflict & updated changelog]

10 years agoclk: bcm281xx: don't use unnamed structs or unions
Alex Elder [Mon, 7 Apr 2014 13:22:12 +0000 (08:22 -0500)]
clk: bcm281xx: don't use unnamed structs or unions

The Broadcom Kona clock code, as originally written, made use of
unnamed union and struct fields.  This is a feature present in C11,
and is a GNU extension otherwise.  It worked very well for me.

Unfortunately, Russell King reported that this feature was not
supported in a build environment he used, which meant attempting
to build this code failed spectacularly.

Add names to these unnamed fields, and update the code accordingly.

Reported-by: Russell King <linux@arm.linux.org.uk>
Tested-by: Markus Mayer <markus.mayer@linaro.org>
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10 years agoLinux 3.15-rc3
Linus Torvalds [Mon, 28 Apr 2014 02:29:27 +0000 (19:29 -0700)]
Linux 3.15-rc3

10 years agoword-at-a-time: avoid undefined behaviour in zero_bytemask macro
Will Deacon [Wed, 23 Apr 2014 16:52:52 +0000 (17:52 +0100)]
word-at-a-time: avoid undefined behaviour in zero_bytemask macro

The asm-generic, big-endian version of zero_bytemask creates a mask of
bytes preceding the first zero-byte by left shifting ~0ul based on the
position of the first zero byte.

Unfortunately, if the first (top) byte is zero, the output of
prep_zero_mask has only the top bit set, resulting in undefined C
behaviour as we shift left by an amount equal to the width of the type.
As it happens, GCC doesn't manage to spot this through the call to fls(),
but the issue remains if architectures choose to implement their shift
instructions differently.

An example would be arch/arm/ (AArch32), where LSL Rd, Rn, #32 results
in Rd == 0x0, whilst on arch/arm64 (AArch64) LSL Xd, Xn, #64 results in
Xd == Xn.

Rather than check explicitly for the problematic shift, this patch adds
an extra shift by 1, replacing fls with __fls. Since zero_bytemask is
never called with a zero argument (has_zero() is used to check the data
first), we don't need to worry about calling __fls(0), which is
undefined.

Cc: <stable@vger.kernel.org>
Cc: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge branch 'safe-dirty-tlb-flush'
Linus Torvalds [Sun, 27 Apr 2014 22:08:12 +0000 (15:08 -0700)]
Merge branch 'safe-dirty-tlb-flush'

This merges the patch to fix possible loss of dirty bit on munmap() or
madvice(DONTNEED).  If there are concurrent writers on other CPU's that
have the unmapped/unneeded page in their TLBs, their writes to the page
could possibly get lost if a third CPU raced with the TLB flush and did
a page_mkclean() before the page was fully written.

Admittedly, if you unmap() or madvice(DONTNEED) an area _while_ another
thread is still busy writing to it, you deserve all the lost writes you
could get.  But we kernel people hold ourselves to higher quality
standards than "crazy people deserve to lose", because, well, we've seen
people do all kinds of crazy things.

So let's get it right, just because we can, and we don't have to worry
about it.

* safe-dirty-tlb-flush:
  mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Sun, 27 Apr 2014 20:26:28 +0000 (13:26 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: limit the path size in send to PATH_MAX
  Btrfs: correctly set profile flags on seqlock retry
  Btrfs: use correct key when repeating search for extent item
  Btrfs: fix inode caching vs tree log
  Btrfs: fix possible memory leaks in open_ctree()
  Btrfs: avoid triggering bug_on() when we fail to start inode caching task
  Btrfs: move btrfs_{set,clear}_and_info() to ctree.h
  btrfs: replace error code from btrfs_drop_extents
  btrfs: Change the hole range to a more accurate value.
  btrfs: fix use-after-free in mount_subvol()

10 years agoMerge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Linus Torvalds [Sun, 27 Apr 2014 19:55:04 +0000 (12:55 -0700)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm

Pull arm fixes from Russell King:
 "A number of fixes for the PJ4/iwmmxt changes which arm-soc forced me
  to take during the merge window.  This stuff should have been better
  tested and sorted out *before* the merge window"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8042/1: iwmmxt: allow to build iWMMXt on Marvell PJ4B
  ARM: 8041/1: pj4: fix cpu_is_pj4 check
  ARM: 8040/1: pj4: properly detect existence of iWMMXt coprocessor
  ARM: 8039/1: pj4: enable iWMMXt only if CONFIG_IWMMXT is set
  ARM: 8038/1: iwmmxt: explicitly check for supported architectures

10 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Sun, 27 Apr 2014 19:54:05 +0000 (12:54 -0700)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:
 - compat renameat2 syscall wiring and __NR_compat_syscalls fix
 - TLB fix for transparent huge pages following switch to generic
   mmu_gather
 - spinlock initialisation for init_mm's context
 - move of_clk_init() earlier
 - Kconfig duplicate entry fix

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: init: Move of_clk_init to time_init
  arm64: initialize spinlock for init_mm's context
  arm64: debug: remove noisy, pointless warning
  arm64: mm: Add THP TLB entries to general mmu_gather
  arm64: add renameat2 compat syscall
  ARM64: Remove duplicated Kconfig entry for "kernel/power/Kconfig"
  arm64: __NR_compat_syscalls fix

10 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 27 Apr 2014 18:21:03 +0000 (11:21 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A slighlty large fix for a subtle issue in the CPU hotplug code of
  certain ARM SoCs, where the not yet online cpu needs to setup the cpu
  local timer and needs to set the interrupt affinity to itself.
  Setting interrupt affinity to a not online cpu is prohibited and
  therefor the timer interrupt ends up on the wrong cpu, which leads to
  nasty complications.

  The SoC folks tried to hack around that in the SoC code in some more
  than nasty ways.  The proper solution is to have a way to enforce the
  affinity setting to a not online cpu.  The core patch to the genirq
  code provides that facility and the follow up patches make use of it
  in the GIC interrupt controller and the exynos timer driver.

  The change to the core code has no implications to existing users,
  except for the rename of the locked function and therefor the
  necessary fixup in mips/cavium.  Aside of that, no runtime impact is
  possible, as none of the existing interrupt chips implements anything
  which depends on the force argument of the irq_set_affinity()
  callback"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: Exynos_mct: Register clock event after request_irq()
  clocksource: Exynos_mct: Use irq_force_affinity() in cpu bringup
  irqchip: Gic: Support forced affinity setting
  genirq: Allow forcing cpu affinity of interrupts

10 years agoMerge tag 'tty-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Sun, 27 Apr 2014 17:39:09 +0000 (10:39 -0700)]
Merge tag 'tty-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are a few tty/serial fixes for 3.15-rc3 that resolve a number of
  reported issues in the 8250 and samsung serial drivers, as well as a
  character loss fix for the tty core that was caused by the lock
  removal patches a release ago"

* tag 'tty-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial_core: fix uart PORT_UNKNOWN handling
  serial: samsung: Change barrier() to cpu_relax() in console output
  serial: samsung: don't check config for every character
  serial: samsung: Use the passed in "port", fixing kgdb w/ no console
  serial: 8250: Fix thread unsafe __dma_tx_complete function
  8250_core: Fix unwanted TX chars write
  tty: Fix race condition between __tty_buffer_request_room and flush_to_ldisc

10 years agoMerge tag 'staging-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Sun, 27 Apr 2014 17:34:29 +0000 (10:34 -0700)]
Merge tag 'staging-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging / IIO driver fixes from Greg KH:
 "Here are some small staging and IIO driver fixes for 3.15-rc3.

  Nothing major at all, just some assorted issues that people have
  reported"

* tag 'staging-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: comedi: usbdux: bug fix for accessing 'ao_chanlist' in private data
  iio: adc: mxs-lradc: fix warning when buidling on avr32
  iio: cm36651: Fix i2c client leak and possible NULL pointer dereference
  iio: querying buffer scan_mask should return 0/1
  staging:iio:ad2s1200 fix a missing break
  iio: adc: at91_adc: correct default shtim value
  ARM: at91: at91sam9260: change at91_adc name
  ARM: at91: at91sam9g45: change at91_adc name
  iio: cm32181: Fix read integration time function
  iio: adc: at91_adc: Repair broken platform_data support

10 years agoMerge tag 'driver-core-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 27 Apr 2014 17:28:34 +0000 (10:28 -0700)]
Merge tag 'driver-core-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are some kernfs fixes for 3.15-rc3 that resolve some reported
  problems.  Nothing huge, but all needed"

* tag 'driver-core-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  s390/ccwgroup: Fix memory corruption
  kernfs: add back missing error check in kernfs_fop_mmap()
  kernfs: fix a subdir count leak

10 years agoMerge tag 'usb-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Sun, 27 Apr 2014 17:24:17 +0000 (10:24 -0700)]
Merge tag 'usb-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of USB fixes for 3.15-rc3.  The majority are gadget
  fixes, as we didn't get any of those in for 3.15-rc2.  The others are
  all over the place, and there's a number of new device id addtions as
  well."

* tag 'usb-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (35 commits)
  usb: option: add and update a number of CMOTech devices
  usb: option: add Alcatel L800MA
  usb: option: add Olivetti Olicard 500
  usb: qcserial: add Sierra Wireless MC7305/MC7355
  usb: qcserial: add Sierra Wireless MC73xx
  usb: qcserial: add Sierra Wireless EM7355
  USB: io_ti: fix firmware download on big-endian machines
  usb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG_PM
  xhci: extend quirk for Renesas cards
  xhci: Switch Intel Lynx Point ports to EHCI on shutdown.
  usb: xhci: Prefer endpoint context dequeue pointer over stopped_trb
  phy: core: make NULL a valid phy reference if !CONFIG_GENERIC_PHY
  phy: fix kernel oops in phy_lookup()
  phy: restore OMAP_CONTROL_PHY dependencies
  phy: exynos: fix building as a module
  USB: serial: fix sysfs-attribute removal deadlock
  usb: wusbcore: fix panic in wusbhc_chid_set
  usb: wusbcore: convert nested lock to use spin_lock instead of spin_lock_irq
  uwb: don't call spin_unlock_irq in a USB completion handler
  usb: chipidea: coordinate usb phy initialization for different phy type
  ...

10 years agoMerge tag 'pm+acpi-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sun, 27 Apr 2014 17:19:06 +0000 (10:19 -0700)]
Merge tag 'pm+acpi-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These include a fix for a recent ACPI regression related to device
  notifications, intel_idle fix related to IvyTown support, fix for a
  buffer size issue in ACPICA, PM core fix related to the "freeze" sleep
  state, four fixes for various types of breakage in cpufreq drivers, a
  PNP workaround for a wrong memory region size in ACPI tables, and a
  fix and cleanup for the ACPI tools Makefile.

  Specifics:

   - Fix for broken ACPI notifications on some systems caused by a
     recent ACPI hotplug commit that blocked the propagation of unknown
     type notifications to device drivers inadvertently.

   - intel_idle fix to make the IvyTown C-states handling (added
     recently) work as intended which now is broken due to missing
     braces.  From Christoph Jaeger.

   - ACPICA fix to make it allocate buffers of the right sizes for the
     Generic Serial Bus operation region access.  From Lv Zheng.

   - PM core fix unblocking cpuidle before entering the "freeze" sleep
     state which causes that state to be able to actually save more
     energy than runtime idle.

   - Configuration and build fixes for the highbank and powernv cpufreq
     drivers from Kefeng Wang and Srivatsa S Bhat.

   - Coccinelle warning fix related to error pointers for the unicore32
     cpufreq driver from Duan Jiong.

   - Integer overflow fix for the ppc-corenet cpufreq driver from Geert
     Uytterhoeven.

   - Workaround for BIOSes that don't report the entire Intel MCH area
     in their ACPI tables from Bjorn Helgaas.

   - ACPI tools Makefile fix and cleanup from Thomas Renninger"

* tag 'pm+acpi-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / notify: Do not block unknown type notifications in root handler
  PNP: Work around BIOS defects in Intel MCH area reporting
  cpufreq: highbank: fix ARM_HIGHBANK_CPUFREQ dependency warning
  cpufreq: ppc: Fix integer overflow in expression
  cpufreq, powernv: Fix build failure on UP
  cpufreq: unicore32: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO
  PM / suspend: Make cpuidle work in the "freeze" state
  intel_idle: fix IVT idle state table setting
  ACPICA: Fix buffer allocation issue for generic_serial_bus region accesses.
  tools/power/acpi: Minor bugfixes

10 years agoBtrfs: limit the path size in send to PATH_MAX
Chris Mason [Sat, 26 Apr 2014 12:02:03 +0000 (05:02 -0700)]
Btrfs: limit the path size in send to PATH_MAX

fs_path_ensure_buf is used to make sure our path buffers for
send are big enough for the path names as we construct them.
The buffer size is limited to 32K by the length field in
the struct.

But bugs in the path construction can end up trying to build
a huge buffer, and we'll do invalid memmmoves when the
buffer length field wraps.

This patch is step one, preventing the overflows.

Signed-off-by: Chris Mason <clm@fb.com>
10 years agoclk: mvebu: add Orion5x clock driver
Thomas Petazzoni [Tue, 22 Apr 2014 21:26:08 +0000 (23:26 +0200)]
clk: mvebu: add Orion5x clock driver

This commit adds a core clock driver for the Orion5x SoC, with support
for the tclk, the CPU frequency and the DDR frequency. All the details
about the Sample-At-Reset register were extracted from the U-Boot
sources for Orion5x.

Note that Orion5x does not have gatable clocks, so this core clock
driver is sufficient to support clocking on Orion5x platforms.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: https://lkml.kernel.org/r/1398202002-28530-5-git-send-email-thomas.petazzoni@free-electrons.com
Cc: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
10 years agomm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts
Linus Torvalds [Fri, 25 Apr 2014 23:05:40 +0000 (16:05 -0700)]
mm: split 'tlb_flush_mmu()' into tlb flushing and memory freeing parts

The mmu-gather operation 'tlb_flush_mmu()' has done two things: the
actual tlb flush operation, and the batched freeing of the pages that
the TLB entries pointed at.

This splits the operation into separate phases, so that the forced
batched flushing done by zap_pte_range() can now do the actual TLB flush
while still holding the page table lock, but delay the batched freeing
of all the pages to after the lock has been dropped.

This in turn allows us to avoid a race condition between
set_page_dirty() (as called by zap_pte_range() when it finds a dirty
shared memory pte) and page_mkclean(): because we now flush all the
dirty page data from the TLB's while holding the pte lock,
page_mkclean() will be held up walking the (recently cleaned) page
tables until after the TLB entries have been flushed from all CPU's.

Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Dave Hansen <dave.hansen@intel.com>
Acked-by: Hugh Dickins <hughd@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
10 years agoMerge branches 'pnp' and 'acpi-hotplug'
Rafael J. Wysocki [Fri, 25 Apr 2014 22:40:25 +0000 (00:40 +0200)]
Merge branches 'pnp' and 'acpi-hotplug'

* pnp:
  PNP: Work around BIOS defects in Intel MCH area reporting

* acpi-hotplug:
  ACPI / notify: Do not block unknown type notifications in root handler

10 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Fri, 25 Apr 2014 20:12:25 +0000 (13:12 -0700)]
Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 - ltc2945: Don't unecessarily crash kernel on implementation error
 - vexpress: Fix 'name' and 'label' attributes

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (ltc2945) Don't crash the kernel unnecessarily
  hwmon: (vexpress) Avoid creating non-existing attributes
  hwmon: (vexpress) Use legal hwmon device names

10 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 25 Apr 2014 20:07:24 +0000 (13:07 -0700)]
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of seven fixes, three (hpsa) and free'd command
  references correcting bugs in the last round of updates and the
  remaining four correcting problems within the SCSI error handler that
  was causing a deadlock within USB"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  [SCSI] More USB deadlock fixes
  [SCSI] Fix USB deadlock caused by SCSI error handling
  [SCSI] Fix command result state propagation
  [SCSI] Fix spurious request sense in error handling
  [SCSI] don't reference freed command in scsi_prep_return
  [SCSI] don't reference freed command in scsi_init_sgtable
  [SCSI] hpsa: fix NULL dereference in hpsa_put_ctlr_into_performant_mode()

10 years agoMerge tag 'fixes-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Fri, 25 Apr 2014 20:02:02 +0000 (13:02 -0700)]
Merge tag 'fixes-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Since we didn't get around to collect fixes in time for -rc2 over the
  easter vacation, this one is unfortunately a bit larger than we'd like
  for an -rc3 merge.

  A large set of the changes is in the device tree sources, so I'm
  splitting out the description between code changes and DT changes.
  Aside from omap and versatile express, the actual code bugs are and
  trivial.  Here is an overview:

  imx:
   - fix video clock settings
   - fix one clock refcounting bug

  omap:
   - update defconfig for renamed USB PHY driver
   - fix error handling in gpmc
   - fix N900 video initialization regression
   - fix reression in hwmod code from missing braces
   - fix am43xx and omap3 clocks
   - remove bogus write to voltage control register

  pxa:
   - fix build regression from 3.13 header cleanup

  rockchip:
   - fix a misleading printk string

  shmobile:
   - fix incorrect sound setting on multiple machines

  spear:
   - remove incorrect __init section annotation

  tegra:
   - remove a stale Kconfig entry

  u300:
   - update defconfig

  ux500:
   - enable common wireless and sensor drivers in defconfig
   - more defconfig updates

  vexpress:
   - fix voltage calculation for opp
   - fix reboot hang and warning
   - fix out-of-bounds array access
   - improve error handling in clock driver

  overall:
   - always select CLKSRC_OF in multiplatform builds

  And these are the devicetree related changes:

  imx:
   - add missing #clock-cell properties
   - fix pinctrl setting in imx6sl-evk
   - fix video endpoint on imx53
   - remove obsolete lvds-channel nodes (multiple patches)
   - add missing second stmpe node
   - fix usb host mode on dmo-edmqmx6 (multiple patches)
   - fix gic node #address-cells to match usage
   - add missing legacy IRQ map for PCIe
   - fix microsom pincontrol setting for rgmii
   - fix fatal typo in touchscreen DT usage for mx5
   - list all RAM present on m53evk and mx53qsb

  omap:
   - fix bug in DT handling of gpmc external bus
   - add DT for older revision of beagleboard
   - fix regression after DT node name fixes
   - remove obsolete properties for gpmc
   - fix pinmux comment to match DT it refers to
   - fix newly added dra7xx clock node data
   - add missing clock for USB PHY

  mvebu:
   - add missing clock for mdio node
   - fix nonstandard vendor prefixes on i2c nodes

  rockchip:
   - fix pin control setting for uart

  shmobile:
   - fix typo in DT data for pin control (multiple patches)
   - fix gic node #address-cells to match usage

  tegra:
   - fix clock and uart DT representation to match hardware

  zynq:
   - add DT nodes for newly added driver
   - add DT properties required for cpufreq-ondemand

  overall:
   - restore alphabetic order in Makefile
   - grammar fixes in bindings"

* tag 'fixes-3.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (66 commits)
  ARM: vexpress/TC2: Convert OPP voltage to uV before storing
  power/reset: vexpress: Fix restart/power off operation
  dt: tegra: remove non-existent clock IDs
  clk: tegra: remove non-existent clocks
  ARM: tegra: remove UART5/UARTE from tegra124.dtsi
  ARM: tegra: remove TEGRA_EMC_SCALING_ENABLE
  ARM: Tidy up DTB Makefile entries
  ARM: fix missing CLKSRC_OF on multi-platform
  ARM: spear: add __init to spear_clocksource_init()
  ARM: pxa: hx4700.h: include "irqs.h" for PXA_NR_BUILTIN_GPIO
  arm/mach-vexpress: array accessed out of bounds
  clk: vexpress: NULL dereference on error path
  ARM: OMAP2+: Fix GPMC remap for devices using an offset
  ARM: zynq: dt: Add I2C nodes to Zynq device tree
  ARM: zynq: DT: Add 'clock-latency' property
  ARM: OMAP2+: Fix oops for GPMC free
  ARM: dts: Add support for the BeagleBoard xM A/B
  ARM: dts: Grammar /that will/it will/
  ARM: dts: Grammar /is uses/ is used/
  ARM: OMAP2+: Fix config name for USB3 PHY
  ...

10 years agoMerge tag 'locks-v3.15-2' of git://git.samba.org/jlayton/linux
Linus Torvalds [Fri, 25 Apr 2014 19:40:32 +0000 (12:40 -0700)]
Merge tag 'locks-v3.15-2' of git://git.samba.org/jlayton/linux

Pull file locking fixes from Jeff Layton:
 "File locking related bugfixes for v3.15 (pile #2)

   - fix for a long-standing bug in __break_lease that can cause soft
     lockups
   - renaming of file-private locks to "open file description" locks,
     and the command macros to more visually distinct names

  The fix for __break_lease is also in the pile of patches for which
  Bruce sent a pull request, but I assume that your merge procedure will
  handle that correctly.

  For the other patches, I don't like the fact that we need to rename
  this stuff at this late stage, but it should be settled now
  (hopefully)"

* tag 'locks-v3.15-2' of git://git.samba.org/jlayton/linux:
  locks: rename FL_FILE_PVT and IS_FILE_PVT to use "*_OFDLCK" instead
  locks: rename file-private locks to "open file description locks"
  locks: allow __break_lease to sleep even when break_time is 0

10 years agoMerge branch 'for-3.15' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Fri, 25 Apr 2014 19:39:05 +0000 (12:39 -0700)]
Merge branch 'for-3.15' of git://linux-nfs.org/~bfields/linux

Pull nfsd bugfixes from Bruce Fields:
 "Three small nfsd bugfixes (including one locks.c fix for a bug
  triggered only from nfsd).

  Jeff's patches are for long-existing problems that became easier to
  trigger since the addition of vfs delegation support"

* 'for-3.15' of git://linux-nfs.org/~bfields/linux:
  Revert "nfsd4: fix nfs4err_resource in 4.1 case"
  nfsd: set timeparms.to_maxval in setup_callback_client
  locks: allow __break_lease to sleep even when break_time is 0

10 years agos390/ccwgroup: Fix memory corruption
Christian Borntraeger [Wed, 23 Apr 2014 18:58:45 +0000 (20:58 +0200)]
s390/ccwgroup: Fix memory corruption

commit 0b60f9ead5d4816e7e3d6e28f4a0d22d4a1b2513 (s390: use
device_remove_file_self() instead of device_schedule_callback())

caused random memory corruption on my s390 box. Turns out that the
last element of the ccwgroup structure is of dynamic size, so we
must move the newly introduced work structure _before_ the zero
length array.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
CC: Tejun Heo <tj@kernel.org>
CC: Martin Schwidefsky <schwidefsky@de.ibm.com>
CC: Heiko Carstens <heiko.carstens@de.ibm.com>
CC: Sebastian Ott <sebott@linux.vnet.ibm.com>
CC: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agokernfs: add back missing error check in kernfs_fop_mmap()
Tejun Heo [Sun, 20 Apr 2014 12:29:21 +0000 (08:29 -0400)]
kernfs: add back missing error check in kernfs_fop_mmap()

While updating how mmap enabled kernfs files are handled by lockdep,
9b2db6e18945 ("sysfs: bail early from kernfs_file_mmap() to avoid
spurious lockdep warning") inadvertently dropped error return check
from kernfs_file_mmap().  The intention was just dropping "if
(ops->mmap)" check as the control won't reach the point if the mmap
callback isn't implemented, but I mistakenly removed the error return
check together with it.

This led to Xorg crash on i810 which was reported and bisected to the
commit and then to the specific change by Tobias.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-bisected-by: Tobias Powalowski <tobias.powalowski@googlemail.com>
Tested-by: Tobias Powalowski <tobias.powalowski@googlemail.com>
References: http://lkml.kernel.org/g/533D01BD.1010200@googlemail.com
Cc: stable <stable@vger.kernel.org> # 3.14
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agokernfs: fix a subdir count leak
Jianyu Zhan [Thu, 17 Apr 2014 09:52:10 +0000 (17:52 +0800)]
kernfs: fix a subdir count leak

Currently kernfs_link_sibling() increates parent->dir.subdirs before
adding the node into parent's chidren rb tree.

Because it is possible that kernfs_link_sibling() couldn't find
a suitable slot and bail out, this leads to a mismatch between
elevated subdir count with actual children node numbers.

This patches fix this problem, by moving the subdir accouting
after the actual addtion happening.

Signed-off-by: Jianyu Zhan <nasa4836@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agousb: option: add and update a number of CMOTech devices
Bjørn Mork [Fri, 25 Apr 2014 16:49:20 +0000 (18:49 +0200)]
usb: option: add and update a number of CMOTech devices

A number of older CMOTech modems are based on Qualcomm
chips.  The blacklisted interfaces are QMI/wwan.

Reported-by: Lars Melin <larsm17@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agousb: option: add Alcatel L800MA
Bjørn Mork [Fri, 25 Apr 2014 16:49:19 +0000 (18:49 +0200)]
usb: option: add Alcatel L800MA

Device interface layout:
0: ff/ff/ff - serial
1: ff/00/00 - serial AT+PPP
2: ff/ff/ff - QMI/wwan
3: 08/06/50 - storage

Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agousb: option: add Olivetti Olicard 500
Bjørn Mork [Fri, 25 Apr 2014 16:49:18 +0000 (18:49 +0200)]
usb: option: add Olivetti Olicard 500

Device interface layout:
0: ff/ff/ff - serial
1: ff/ff/ff - serial AT+PPP
2: 08/06/50 - storage
3: ff/ff/ff - serial
4: ff/ff/ff - QMI/wwan

Cc: <stable@vger.kernel.org>
Reported-by: Julio Araujo <julio.araujo@wllctel.com.br>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agousb: qcserial: add Sierra Wireless MC7305/MC7355
Bjørn Mork [Fri, 25 Apr 2014 16:49:17 +0000 (18:49 +0200)]
usb: qcserial: add Sierra Wireless MC7305/MC7355

Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agousb: qcserial: add Sierra Wireless MC73xx
Bjørn Mork [Fri, 25 Apr 2014 16:49:16 +0000 (18:49 +0200)]
usb: qcserial: add Sierra Wireless MC73xx

Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agousb: qcserial: add Sierra Wireless EM7355
Bjørn Mork [Fri, 25 Apr 2014 16:49:15 +0000 (18:49 +0200)]
usb: qcserial: add Sierra Wireless EM7355

Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoarm64: init: Move of_clk_init to time_init
Chanho Min [Mon, 14 Apr 2014 07:38:53 +0000 (08:38 +0100)]
arm64: init: Move of_clk_init to time_init

Clock providers should be initialized before clocksource_of_init.
If not, Clock source initialization can be fail to get the clock.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoUSB: io_ti: fix firmware download on big-endian machines
Johan Hovold [Fri, 25 Apr 2014 13:23:03 +0000 (15:23 +0200)]
USB: io_ti: fix firmware download on big-endian machines

During firmware download the device expects memory addresses in
big-endian byte order. As the wIndex parameter which hold the address is
sent in little-endian byte order regardless of host byte order, we need
to use swab16 rather than cpu_to_be16.

Also make sure to handle the struct ti_i2c_desc size parameter which is
returned in little-endian byte order.

Reported-by: Ludovic Drolez <ldrolez@debian.org>
Tested-by: Ludovic Drolez <ldrolez@debian.org>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agousb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG_PM
David Cohen [Fri, 25 Apr 2014 16:20:16 +0000 (19:20 +0300)]
usb/xhci: fix compilation warning when !CONFIG_PCI && !CONFIG_PM

When CONFIG_PCI and CONFIG_PM are not selected, xhci.c gets this
warning:
drivers/usb/host/xhci.c:409:13: warning: ‘xhci_msix_sync_irqs’ defined
but not used [-Wunused-function]

Instead of creating nested #ifdefs, this patch fixes it by defining the
xHCI PCI stubs as inline.

This warning has been in since 3.2 kernel and was
caused by commit 421aa841a134f6a743111cf44d0c6d3b45e3cf8c
"usb/xhci: hide MSI code behind PCI bars", but wasn't noticed
until 3.13 when a configuration with these options was tried

Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Cc: stable@vger.kernel.org # 3.2
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoxhci: extend quirk for Renesas cards
Igor Gnatenko [Fri, 25 Apr 2014 16:20:15 +0000 (19:20 +0300)]
xhci: extend quirk for Renesas cards

After suspend another Renesas PCI-X USB 3.0 card doesn't work.
[root@fedora-20 ~]# lspci -vmnnd 1912:
Device: 03:00.0
Class: USB controller [0c03]
Vendor: Renesas Technology Corp. [1912]
Device: uPD720202 USB 3.0 Host Controller [0015]
SVendor: Renesas Technology Corp. [1912]
SDevice: uPD720202 USB 3.0 Host Controller [0015]
Rev: 02
ProgIf: 30

This patch should be applied to stable kernel 3.14 that contain
the commit 1aa9578c1a9450fb21501c4f549f5b1edb557e6d
"xhci: Fix resume issues on Renesas chips in Samsung laptops"

Reported-and-tested-by: Anatoly Kharchenko <rfr-bugs@yandex.ru>
Reference: http://redmine.russianfedora.pro/issues/1315
Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Cc: stable@vger.kernel.org # 3.14
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoxhci: Switch Intel Lynx Point ports to EHCI on shutdown.
Denis Turischev [Fri, 25 Apr 2014 16:20:14 +0000 (19:20 +0300)]
xhci: Switch Intel Lynx Point ports to EHCI on shutdown.

The same issue like with Panther Point chipsets. If the USB ports are
switched to xHCI on shutdown, the xHCI host will send a spurious interrupt,
which will wake the system. Some BIOS have work around for this, but not all.
One example is Compulab's mini-desktop, the Intense-PC2.

The bug can be avoided if the USB ports are switched back to EHCI on
shutdown.

This patch should be backported to stable kernels as old as 3.12,
that contain the commit 638298dc66ea36623dbc2757a24fc2c4ab41b016
"xhci: Fix spurious wakeups after S5 on Haswell"

Signed-off-by: Denis Turischev <denis@compulab.co.il>
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agousb: xhci: Prefer endpoint context dequeue pointer over stopped_trb
Julius Werner [Fri, 25 Apr 2014 16:20:13 +0000 (19:20 +0300)]
usb: xhci: Prefer endpoint context dequeue pointer over stopped_trb

We have observed a rare cycle state desync bug after Set TR Dequeue
Pointer commands on Intel LynxPoint xHCs (resulting in an endpoint that
doesn't fetch new TRBs and thus an unresponsive USB device). It always
triggers when a previous Set TR Dequeue Pointer command has set the
pointer to the final Link TRB of a segment, and then another URB gets
enqueued and cancelled again before it can be completed. Further
investigation showed that the xHC had returned the Link TRB in the TRB
Pointer field of the Transfer Event (CC == Stopped -- Length Invalid),
but when xhci_find_new_dequeue_state() later accesses the Endpoint
Context's TR Dequeue Pointer field it is set to the first TRB of the
next segment.

The driver expects those two values to be the same in this situation,
and uses the cycle state of the latter together with the address of the
former. This should be fine according to the XHCI specification, since
the endpoint ring should be stopped when returning the Transfer Event
and thus should not advance over the Link TRB before it gets restarted.
However, real-world XHCI implementations apparently don't really care
that much about these details, so the driver should follow a more
defensive approach to try to work around HC spec violations.

This patch removes the stopped_trb variable that had been used to store
the TRB Pointer from the last Transfer Event of a stopped TRB. Instead,
xhci_find_new_dequeue_state() now relies only on the Endpoint Context,
requiring a small amount of additional processing to find the virtual
address corresponding to the TR Dequeue Pointer. Some other parts of the
function were slightly rearranged to better fit into this model.

This patch should be backported to kernels as old as 2.6.31 that contain
the commit ae636747146ea97efa18e04576acd3416e2514f5 "USB: xhci: URB
cancellation support."

Signed-off-by: Julius Werner <jwerner@chromium.org>
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
10 years agoarm64: initialize spinlock for init_mm's context
Leo Yan [Wed, 16 Apr 2014 12:26:35 +0000 (13:26 +0100)]
arm64: initialize spinlock for init_mm's context

ARM64 has defined the spinlock for init_mm's context, so need initialize
the spinlock structure; otherwise during the suspend flow it will dump
the info for spinlock's bad magic warning as below:

[   39.084394] Disabling non-boot CPUs ...
[   39.092871] BUG: spinlock bad magic on CPU#1, swapper/1/0
[   39.092896]  lock: init_mm+0x338/0x3e0, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
[   39.092907] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G           O 3.10.33 #125
[   39.092912] Call trace:
[   39.092927] [<ffffffc000087e64>] dump_backtrace+0x0/0x16c
[   39.092934] [<ffffffc000087fe0>] show_stack+0x10/0x1c
[   39.092947] [<ffffffc000765334>] dump_stack+0x1c/0x28
[   39.092953] [<ffffffc0007653b8>] spin_dump+0x78/0x88
[   39.092960] [<ffffffc0007653ec>] spin_bug+0x24/0x34
[   39.092971] [<ffffffc000300a28>] do_raw_spin_lock+0x98/0x17c
[   39.092979] [<ffffffc00076cf08>] _raw_spin_lock_irqsave+0x4c/0x60
[   39.092990] [<ffffffc000094044>] set_mm_context+0x1c/0x6c
[   39.092996] [<ffffffc0000941c8>] __new_context+0x94/0x10c
[   39.093007] [<ffffffc0000d63d4>] idle_task_exit+0x104/0x1b0
[   39.093014] [<ffffffc00008d91c>] cpu_die+0x14/0x74
[   39.093021] [<ffffffc000084f74>] arch_cpu_idle_dead+0x8/0x14
[   39.093030] [<ffffffc0000e7f18>] cpu_startup_entry+0x1ec/0x258
[   39.093036] [<ffffffc00008d810>] secondary_start_kernel+0x114/0x124

Signed-off-by: Leo Yan <leoy@marvell.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: debug: remove noisy, pointless warning
Will Deacon [Thu, 17 Apr 2014 11:37:14 +0000 (12:37 +0100)]
arm64: debug: remove noisy, pointless warning

Sending a SIGTRAP to a user task after execution of a BRK instruction at
EL0 is fundamental to the way in which software breakpoints work and
doesn't deserve a warning to be logged in dmesg. Whilst the warning can
be justified from EL1, do_debug_exception will already do the right thing,
so simply remove the code altogether.

Cc: Sandeepa Prabhu <sandeepa.prabhu@linaro.org>
Reported-by: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoarm64: mm: Add THP TLB entries to general mmu_gather
Steve Capper [Thu, 24 Apr 2014 14:33:21 +0000 (15:33 +0100)]
arm64: mm: Add THP TLB entries to general mmu_gather

When arm64 moved over to the core mmu_gather, it lost the logic to
flush THP TLB entries (tlb_remove_pmd_tlb_entry was removed and the
core implementation only signals that the mmu_gather needs a flush).

This patch ensures that tlb_add_flush is called for THP TLB entries.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
10 years agoARM: 8042/1: iwmmxt: allow to build iWMMXt on Marvell PJ4B
Sebastian Hesselbarth [Thu, 24 Apr 2014 21:58:30 +0000 (22:58 +0100)]
ARM: 8042/1: iwmmxt: allow to build iWMMXt on Marvell PJ4B

Some Marvell PJ4B CPUs also implement iWMMXt extensions. With a
proper check for iWMMXt coprocessors now in place, enable it by
default on PJ4B. While at it, also allow to manually select
the corresponding Kconfig option.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>