Nicolas Ferre [Sun, 5 Apr 2015 20:29:14 +0000 (22:29 +0200)]
Merge tag 'at91-cleanup4_bis' into at91-next
Fourth batch of cleanup for 4.1:
- 1 issues revealed by the kbuild test robot fixed
- move of some functions and macros into relevant files to be able to
streamline the at91 specific header afterwards
Drop AT91_TIMER_HZ as this can be handled using HZ_FIXED. Initial help message
was:
On AT91rm9200 chips where you're using a system clock derived
from the 32768 Hz hardware clock, this tick rate should divide
it exactly: use a power-of-two value, such as 128 or 256, to
reduce timing errors caused by rounding.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Nicolas Ferre [Mon, 16 Mar 2015 17:09:48 +0000 (18:09 +0100)]
Merge tag 'at91-cleanup3' into at91-4.1-multiplatform
Third batch of cleanup for 4.1:
- System Timer (ST) for at91rm9200 re-work (syscon/regmap):
- watchdog
- restart handler
- timer as a proper clocksource
=> remove mach dependency + cleanup
Nicolas Ferre [Mon, 16 Mar 2015 17:09:44 +0000 (18:09 +0100)]
Merge tag 'at91-cleanup2' into at91-4.1-multiplatform
Second batch of cleanup for 4.1:
- remove unused matrix header files
- dbgu + chip identification: new driver for SoC detection
this allow to remove all additional io mapping
- remove old non-standard AT91 setup code
Nicolas Ferre [Mon, 16 Mar 2015 17:09:39 +0000 (18:09 +0100)]
Merge tag 'at91-cleanup' into at91-4.1-multiplatform
First batch of cleanup for 4.1:
- little phy fixup that is not needed anymore
- hudge cleanup of the PM code:
- removal of "use slow clock" option => always use this for suspend to RAM
- quicker suspend as the asm function is copied only once to SRAM
- use of the same asm function for "standby" and "mem" types of suspend
actions
- adaptation to the ARMv7 processors
Nicolas Ferre [Mon, 16 Mar 2015 17:09:34 +0000 (18:09 +0100)]
Merge tag 'at91-fixes3' into at91-4.1-multiplatform
Third fixes batch for AT91 on 4.0:
- clock fixes for USB
- compatible string changes for handling USB IP differences
(+ needed AHB matrix syscon)
- fix of a compilation error in PM code
Nicolas Ferre [Mon, 16 Mar 2015 17:09:31 +0000 (18:09 +0100)]
Merge tag 'at91-fixes2' into at91-4.1-multiplatform
Second fixes batch for AT91 on 4.0:
- little fix for !MMU debug: may also help for randconfig
- fix of 2 errors in LCD clock definitions
- in PM code, not writing the key leads to not execute the action
Nicolas Ferre [Mon, 16 Mar 2015 17:09:27 +0000 (18:09 +0100)]
Merge tag 'at91-fixes' into at91-4.1-multiplatform
First fixes batch for AT91 on 4.0:
- PM slowclock fixes for DDR and timeouts
- fix some DT entries
- little defconfig updates
- the removal of a harmful watchdog option + its detailed documentation
Nicolas Ferre [Mon, 16 Mar 2015 17:05:48 +0000 (18:05 +0100)]
Merge tag 'at91-cleanup3' into at91-next
Third batch of cleanup for 4.1:
- System Timer (ST) for at91rm9200 re-work (syscon/regmap):
- watchdog
- restart handler
- timer as a proper clocksource
=> remove mach dependency + cleanup
mfd: syscon: Add atmel system timer registers definition
AT91RM920 has a memory range reserved for timer and watchdog configuration.
Expose those registers so that drivers can make use of the system timer syscon
declared in at91 DTs.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
ARM: at91/dt: declare atmel,at91rm9200-st as a syscon
The system timer register range is used to handle three different
functionalities: Periodic Interval Timer, Real Time Timer and watchdog. Declare
it as a syscon to be able to get a regmap.
Also declare it as a simple-mfd and its watchdog subnode.
Finally, document the watchdog compatible string.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Nicolas Ferre [Sat, 14 Mar 2015 16:47:14 +0000 (17:47 +0100)]
Merge tag 'at91-cleanup2' into at91-next
Second batch of cleanup for 4.1:
- remove unused matrix header files
- dbgu + chip identification: new driver for SoC detection
this allow to remove all additional io mapping
- remove old non-standard AT91 setup code
Arnd Bergmann [Thu, 12 Mar 2015 14:54:23 +0000 (15:54 +0100)]
ARM: at91: remove NEED_MACH_IO_H
The mach/io.h header on at91 is used to support a nonstandard I/O space
window for the cf card driver. This changes the driver to use pci_ioremap_io
in order to have the standard location, and then removes the custom
mach/io.h.
Nicolas Ferre [Fri, 13 Mar 2015 13:17:22 +0000 (14:17 +0100)]
Merge tag 'at91-cleanup' into at91-next
First batch of cleanup for 4.1:
- little phy fixup that is not needed anymore
- hudge cleanup of the PM code:
- removal of "use slow clock" option => always use this for suspend to RAM
- quicker suspend as the asm function is copied only once to SRAM
- use of the same asm function for "standby" and "mem" types of suspend
actions
- adaptation to the ARMv7 processors
Wenyou Yang [Mon, 9 Mar 2015 03:54:26 +0000 (11:54 +0800)]
ARM: at91/pm: flush data cache and clean, invalidate and disable the L2 cache
Flush data cache, and clean, invalidate and disable the L2 cache before going to suspend.
Restore the L2 cache configuration and re-enable the L2 cache after waking up.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Tested-by: Sylvain Rochet <sylvain.rochet@finsecur.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Wenyou Yang [Mon, 9 Mar 2015 03:51:09 +0000 (11:51 +0800)]
ARM: at91/pm: rename function name: at91_slow_clock() --> at91_pm_suspend_sram_fn()
As the file name is renamed, rename the function name at91_slow_clock()
--> at91_pm_suspend_sram_fn(), rename the function handler's name at the
same time.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Tested-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
[nicolas.ferre@atmel.com: little update of the commit message] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Wenyou Yang [Mon, 9 Mar 2015 03:49:46 +0000 (11:49 +0800)]
ARM: at91/pm: standby mode uses same sram function as suspend to memory mode
To simply the PM code, the suspend to standby mode uses same sram function
as the suspend to memory mode, running in the internal SRAM, instead of the
respective code for each mode.
For the suspend to standby mode, the master clock doesn't switch to the slow
clock, and PLLA and the main oscillator doesn't turn off as well.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Tested-by: Sylvain Rochet <sylvain.rochet@finsecur.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
The slow clock always exists, selecting CONFIG_AT91_SLOW_CLOCK config
is unnecessary for the suspend to memory mode.
For this mode the master clock should always switch to the slow clock.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Tested-by: Sylvain Rochet <sylvain.rochet@finsecur.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Wenyou Yang [Mon, 9 Mar 2015 03:44:50 +0000 (11:44 +0800)]
ARM: at91: move "select SRAM" under SOC_AT91SAM9 and SOC_SAMA5
To simply the PM config the CONFIG_AT91_SLOW_CLOCK option will be removed,
so move "select SRAM" from under AT91_SLOW_CLOCK, add "select SRAM if PM"
under SOC_AT91SAM9 and SOC_SAMA5
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Tested-by: Sylvain Rochet <sylvain.rochet@finsecur.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Boris Brezillon [Wed, 4 Mar 2015 11:20:12 +0000 (12:20 +0100)]
ARM: at91: remove ksz8081 phy fixup registration for sama5d4ek board
Commit 2b0ba96cea60 ("net: phy: micrel: disable NAND-tree for KSZ8021,
KSZ8031, KSZ8051, KSZ8081") automated the NAND-tree mode deactivation
process, thus making this phy fixup useless.
Remove it along with the associated headers inclusion.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
[nicolas.ferre@atmel.com: remove selection of PHYLIB in at91 Kconfig] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Nicolas Ferre [Thu, 12 Mar 2015 14:30:03 +0000 (15:30 +0100)]
Merge tag 'at91-fixes3' into at91-4.1-cleanup
Third fixes batch for AT91 on 4.0:
- clock fixes for USB
- compatible string changes for handling USB IP differences
(+ needed AHB matrix syscon)
- fix of a compilation error in PM code
Nicolas Ferre [Thu, 12 Mar 2015 14:30:00 +0000 (15:30 +0100)]
Merge tag 'at91-fixes2' into at91-4.1-cleanup
Second fixes batch for AT91 on 4.0:
- little fix for !MMU debug: may also help for randconfig
- fix of 2 errors in LCD clock definitions
- in PM code, not writing the key leads to not execute the action
Nicolas Ferre [Thu, 12 Mar 2015 14:29:56 +0000 (15:29 +0100)]
Merge tag 'at91-fixes' into at91-4.1-cleanup
First fixes batch for AT91 on 4.0:
- PM slowclock fixes for DDR and timeouts
- fix some DT entries
- little defconfig updates
- the removal of a harmful watchdog option + its detailed documentation
Nicolas Ferre [Wed, 11 Mar 2015 16:13:19 +0000 (17:13 +0100)]
Merge tag 'at91-dt' into at91-next
First batch of DT changes for 4.1:
- at91sam9x5 & EK board: ISI and camera sensors
- at91sam9n12 & EK board: USB gadget nodes
- sama5d3: typos, gpio-keys on Xplained board
- sama5d4: i2c, leds, audio, ISI, crypto, pwm missing nodes
- new sama5d4 xplained board
Nicolas Ferre [Wed, 11 Mar 2015 16:10:46 +0000 (17:10 +0100)]
Merge tag 'at91-fixes3' into at91-next
Third fixes batch for AT91 on 4.0:
- clock fixes for USB
- compatible string changes for handling USB IP differences
(+ needed AHB matrix syscon)
- fix of a compilation error in PM code
Nicolas Ferre [Wed, 11 Mar 2015 16:10:42 +0000 (17:10 +0100)]
Merge tag 'at91-fixes2' into at91-next
Second fixes batch for AT91 on 4.0:
- little fix for !MMU debug: may also help for randconfig
- fix of 2 errors in LCD clock definitions
- in PM code, not writing the key leads to not execute the action
Nicolas Ferre [Wed, 11 Mar 2015 16:10:38 +0000 (17:10 +0100)]
Merge tag 'at91-fixes' into at91-next
First fixes batch for AT91 on 4.0:
- PM slowclock fixes for DDR and timeouts
- fix some DT entries
- little defconfig updates
- the removal of a harmful watchdog option + its detailed documentation
Nicolas Ferre [Mon, 9 Mar 2015 15:51:13 +0000 (16:51 +0100)]
ARM: at91/dt: fix USB high-speed clock to select UTMI
The UTMI clock must be selected by any high-speed USB IP. The logic behind it
needs this particular clock.
So, correct the clock in the device tree files affected.
Reported-by: Bo Shen <voice.shen@atmel.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: <stable@vger.kernel.org> #3.18
Boris Brezillon [Wed, 3 Dec 2014 11:32:10 +0000 (12:32 +0100)]
ARM: at91/dt: fix at91 udc compatible strings
The at91rm9200, at91sam9260, at91sam9261 and at91sam9263 SoCs have slightly
different UDC IPs.
Those differences were previously handled with cpu_is_at91xx macro which
are about to be dropped for multi-platform support, thus we need to
change compatible strings.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Boris Brezillon [Wed, 3 Dec 2014 11:32:09 +0000 (12:32 +0100)]
ARM: at91/dt: declare matrix node as a syscon device
There is no specific driver handling the AHB matrix, this is a simple syscon
device. the matrix is needed by several other drivers including the USB on some
SoCs (at91sam9261 for instance).
Without this definition, the USB will not work on these SoCs.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Linus Torvalds [Sun, 8 Mar 2015 19:47:18 +0000 (12:47 -0700)]
Merge tag 'usb-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here's a round of USB fixes for 4.0-rc3.
Nothing major, the usual gadget, xhci and usb-serial fixes and a few
new device ids as well.
All have been in linux-next successfully"
* tag 'usb-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (36 commits)
xhci: Workaround for PME stuck issues in Intel xhci
xhci: fix reporting of 0-sized URBs in control endpoint
usb: ftdi_sio: Add jtag quirk support for Cyber Cortex AV boards
USB: ch341: set tty baud speed according to tty struct
USB: serial: cp210x: Adding Seletek device id's
USB: pl2303: disable break on shutdown
USB: mxuport: fix null deref when used as a console
USB: serial: clean up bus probe error handling
USB: serial: fix port attribute-creation race
USB: serial: fix tty-device error handling at probe
USB: serial: fix potential use-after-free after failed probe
USB: console: add dummy __module_get
USB: ftdi_sio: add PIDs for Actisense USB devices
Revert "USB: serial: make bulk_out_size a lower limit"
cdc-acm: Add support for Denso cradle CU-321
usb-storage: support for more than 8 LUNs
uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS539
USB: usbfs: don't leak kernel data in siginfo
xhci: Clear the host side toggle manually when endpoint is 'soft reset'
xhci: Allocate correct amount of scratchpad buffers
...
Linus Torvalds [Sun, 8 Mar 2015 19:25:40 +0000 (12:25 -0700)]
Merge tag 'tty-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some tty and serial driver fixes for 4.0-rc3.
Along with the atime fix that you know about, here are some other
serial driver bugfixes as well. Most notable is a wait_until_sent
bugfix that was traced back to being around since before 2.6.12 that
Johan has fixed up.
All have been in linux-next successfully"
* tag 'tty-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
TTY: fix tty_wait_until_sent maximum timeout
TTY: fix tty_wait_until_sent on 64-bit machines
USB: serial: fix infinite wait_until_sent timeout
TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation
net: irda: fix wait_until_sent poll timeout
serial: uapi: Declare all userspace-visible io types
serial: core: Fix iotype userspace breakage
serial: sprd: Fix missing spin_unlock in sprd_handle_irq()
console: Fix console name size mismatch
tty: fix up atime/mtime mess, take four
serial: 8250_dw: Fix get_mctrl behaviour
serial:8250:8250_pci: delete unneeded quirk entries
serial:8250:8250_pci: fix redundant entry report for WCH_CH352_2S
Change email address for 8250_pci
serial: 8250: Revert "tty: serial: 8250_core: read only RX if there is something in the FIFO"
Revert "tty/serial: of_serial: add DT alias ID handling"
Linus Torvalds [Sun, 8 Mar 2015 19:15:47 +0000 (12:15 -0700)]
Merge tag 'char-misc-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are two char/misc fixes for 4.0-rc3.
One is a reported binder driver fix needed due to a change in the mm
core that happened in 4.0-rc1. Another is a mei driver fix that
resolves a reported issue in that driver.
Both have been in linux-next for a while"
* tag 'char-misc-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mei: make device disabled on stop unconditionally
android: binder: fix binder mmap failures
Linus Torvalds [Sun, 8 Mar 2015 18:51:04 +0000 (11:51 -0700)]
Merge tag 'cc-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull "code of conflict" from Greg KH:
"This file tries to set the rational basis for our code reviews, gives
some advice on how to conduct them, and provides an excalation channel
for any kernel developers if they so desire it"
[ Let's see how this works ]
* tag 'cc-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Code of Conflict
Linus Torvalds [Sat, 7 Mar 2015 19:31:17 +0000 (11:31 -0800)]
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"arm64 and generic kernel/module.c (acked by Rusty) fixes for
CONFIG_DEBUG_SET_MODULE_RONX"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
kernel/module.c: Update debug alignment after symtable generation
arm64: Don't use is_module_addr in setting page attributes
Johan Hovold [Wed, 4 Mar 2015 09:39:07 +0000 (10:39 +0100)]
TTY: fix tty_wait_until_sent maximum timeout
Currently tty_wait_until_sent may take up to twice as long as the
requested timeout while waiting for driver and hardware buffers to
drain.
Fix this by taking the remaining number of jiffies after waiting for
driver buffers to drain into account so that the timeout actually
becomes a maximum timeout as it is documented to be.
Note that this specifically implies tighter timings when closing a port
as a consequence of actually honouring the port closing-wait setting
for drivers relying on tty_wait_until_sent_from_close (e.g. via
tty_port_close_start).
Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Johan Hovold [Wed, 4 Mar 2015 09:39:06 +0000 (10:39 +0100)]
TTY: fix tty_wait_until_sent on 64-bit machines
Fix overflow bug in tty_wait_until_sent on 64-bit machines, where an
infinite timeout (0) would be passed to the underlying tty-driver's
wait_until_sent-operation as a negative timeout (-1), causing it to
return immediately.
This manifests itself for example as tcdrain() returning immediately,
drivers not honouring the drain flags when setting terminal attributes,
or even dropped data on close as a requested infinite closing-wait
timeout would be ignored.
The first symptom was reported by Asier LLANO who noted that tcdrain()
returned prematurely when using the ftdi_sio usb-serial driver.
Fix this by passing 0 rather than MAX_SCHEDULE_TIMEOUT (LONG_MAX) to the
underlying tty driver.
Note that the serial-core wait_until_sent-implementation is not affected
by this bug due to a lucky chance (comparison to an unsigned maximum
timeout), and neither is the cyclades one that had an explicit check for
negative timeouts, but all other tty drivers appear to be affected.
Remove incorrect and redundant wait_until_sent operation, which waits
for the driver buffer rather than any hardware buffers to drain,
something which is already taken care of by the tty layer (and
chars_in_buffer).
Signed-off-by: Johan Hovold <johan@kernel.org> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Sun, 1 Mar 2015 15:24:28 +0000 (10:24 -0500)]
serial: uapi: Declare all userspace-visible io types
ioctl(TIOCGSERIAL|TIOCSSERIAL) report and can change the port->iotype.
UART drivers use the UPIO_* definitions, but the uapi header defines
parallel values and userspace uses these parallel values for ioctls;
thus the userspace values are definitive.
Define UPIO_* iotypes in terms of the uapi defines, SERIAL_IO_*;
extend the uapi defines to include all values in use by the serial
core.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Sun, 1 Mar 2015 15:18:16 +0000 (10:18 -0500)]
serial: core: Fix iotype userspace breakage
commit 3ffb1a8193bea ("serial: core: Add big-endian iotype")
re-numbered userspace-dependent values; ioctl(TIOCSSERIAL) can
assign the port iotype (which is expected to match the selected
i/o accessors), so iotype values must not be changed.
Cc: Kevin Cernekee <cernekee@gmail.com> Cc: <stable@vger.kernel.org> # 3.19+ Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Reviewed-by: Kevin Cernekee <cernekee@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Axel Lin [Mon, 16 Feb 2015 14:39:04 +0000 (22:39 +0800)]
serial: sprd: Fix missing spin_unlock in sprd_handle_irq()
Fix return from sprd_handle_irq() with spin_lock held.
Signed-off-by: Axel Lin <axel.lin@ingics.com> Reviewed-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Hurley [Sun, 1 Mar 2015 15:11:05 +0000 (10:11 -0500)]
console: Fix console name size mismatch
commit 6ae9200f2cab7 ("enlarge console.name") increased the storage
for the console name to 16 bytes, but not the corresponding
struct console_cmdline::name storage. Console names longer than
8 bytes cause read beyond end-of-string and failure to match
console; I'm not sure if there are other unexpected consequences.
But it still misses one point. As John Paul correctly points out, we
do not care about setting date. If somebody ever changes wall
time backwards (by mistake for example), tty timestamps are never
updated until the original wall time passes.
So check the absolute difference of times and if it large than "8
seconds or so", always update the time. That means we will update
immediatelly when changing time. Ergo, CAP_SYS_TIME can foul the
check, but it was always that way.
Thanks John for serving me this so nicely debugged.
Signed-off-by: Jiri Slaby <jslaby@suse.cz> Reported-by: John Paul Perry <john_paul.perry@alcatel-lucent.com> Cc: <stable@vger.kernel.org> # all, as b0b885657 was backported Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Desmond Liu [Fri, 27 Feb 2015 00:35:57 +0000 (16:35 -0800)]
serial: 8250_dw: Fix get_mctrl behaviour
Fixed behaviour of get_mctrl() serial driver function as documented in:
https://www.kernel.org/doc/Documentation/serial/driver
Added device-tree properties 'dcd-override', 'dsr-override',
'cts-override', and 'ri-override' specific to the Synopsis 8250
DesignWare UART driver. Allows one to force Data Carrier Detect,
Clear To Send, and Data Set Ready signals to permanently be reported as
active. The Ring indicator can be forced to be reported as inactive.
It is possible that if modem control signalling is enabled on a port
that doesn't have these pins (e.g. - a simple two wire Tx/Rx port), the
driver can hang indefinitely waiting for the state to change. The new
DT properties allow the driver to ignore the state of these pins on
serial ports that don't support them, as recommended in the kernel
documentation.
Reported-by: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Wang YanQing <udknight@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The conditional RX-FIFO read seems to cause spurious interrupts and we
see just:
|serial8250: too much work for irq29
The previous behaviour was "default" for decades and Marvell's 88f6282 SoC
might not be the only that relies on it. Therefore the Omap fix is
reverted for now.
Fixes: 0aa525d11859 ("tty: serial: 8250_core: read only RX if there is
something in the FIFO") Reported-By: Nicolas Schichan <nschichan@freebox.fr> Debuged-By: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Sat, 7 Mar 2015 00:54:22 +0000 (16:54 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Radeon, imx, msm, and i915 fixes.
The msm, imx and i915 ones are fairly run of the mill.
Radeon had some DP audio and posting reads for irq fixes, along with a
fix for 32-bit kernels with new cards, we were using unsigned long to
represent GPU side memory space, but since that changed size on 32 vs
64 cards with lots of VRAM failed, so the change has no effect on
x86-64, just moves to using uint64_t instead"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (35 commits)
drm/msm: kexec fixes
drm/msm/mdp5: fix cursor blending
drm/msm/mdp5: fix cursor ROI
drm/msm/atomic: Don't leak atomic commit object when commit fails
drm/msm/mdp5: Avoid flushing registers when CRTC is disabled
drm/msm: update generated headers (add 6th lm.base entry)
drm/msm/mdp5: fixup "drm/msm: fix fallout of atomic dpms changes"
drm/ttm: device address space != CPU address space
drm/mm: Support 4 GiB and larger ranges
drm/i915: gen4: work around hang during hibernation
drm/i915: Check for driver readyness before handling an underrun interrupt
drm/radeon: fix interlaced modes on DCE8
drm/radeon: fix DRM_IOCTL_RADEON_CS oops
drm/radeon: do a posting read in cik_set_irq
drm/radeon: do a posting read in si_set_irq
drm/radeon: do a posting read in evergreen_set_irq
drm/radeon: do a posting read in r600_set_irq
drm/radeon: do a posting read in rs600_set_irq
drm/radeon: do a posting read in r100_set_irq
radeon/audio: fix DP audio on DCE6
...
This patch marks baytrail_i2c_acquire() that it might sleep. Also it chages
while-loop to do-while and, though it is matter of taste, gives a chance to
check one more time before report a timeout.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
It seems the idea behind the cross-check is to prevent acquire semaphore when
there is no release callback and vice versa. Thus, patch fixes a typo.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Andy Shevchenko [Tue, 10 Feb 2015 17:06:08 +0000 (19:06 +0200)]
i2c: designware-baytrail: fix sparse warnings
There is no need to export functions that are used as the callbacks in the
struct dw_i2c_dev. Otherwise we get the following warnings:
drivers/i2c/busses/i2c-designware-baytrail.c:63:5: warning: symbol 'baytrail_i2c_acquire' was not declared. Should it be static?
drivers/i2c/busses/i2c-designware-baytrail.c:114:6: warning: symbol 'baytrail_i2c_release' was not declared. Should it be static?
While here, do few indentation fixes, remove i2c_dw_eval_lock_support() from
functions exported to the modules and redundant assignment of local sem
variable.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Andy Shevchenko [Tue, 10 Feb 2015 17:06:07 +0000 (19:06 +0200)]
i2c: designware-baytrail: fix typo in error path
It seems we have same message for different return values in get_sem() and
baytrail_i2c_acquire(). I suspect this is just a typo, so this patch fixes it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Andy Shevchenko [Tue, 10 Feb 2015 17:06:06 +0000 (19:06 +0200)]
i2c: designware-baytrail: describe magic numbers
The patch converts hardcoded numerical constants to a named ones.
While here, align the variable name in get_sem() and reset_semaphore().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: David E. Box <david.e.box@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
projects / karo-tx-linux.git / log