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12 years agomtd: maps: bcm963xx-flash: clean up printk usage
Jonas Gorski [Mon, 5 Dec 2011 15:08:07 +0000 (16:08 +0100)]
mtd: maps: bcm963xx-flash: clean up printk usage

Replace raw printk's with their pr_XXX equivalent and unify broken up
strings so they become grepable.

Also replace the PFX definition with a pr_fmt().

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: maps: bcm963xx-flash: remove superfluous semicolons
Jonas Gorski [Mon, 5 Dec 2011 15:08:06 +0000 (16:08 +0100)]
mtd: maps: bcm963xx-flash: remove superfluous semicolons

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: maps: bcm963xx-flash: fix word order for spare partition
Jonas Gorski [Mon, 5 Dec 2011 15:08:05 +0000 (16:08 +0100)]
mtd: maps: bcm963xx-flash: fix word order for spare partition

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: davinci: if no amif timing is passed, don; t setup cscfg register
Heiko Schocher [Sun, 4 Dec 2011 09:37:36 +0000 (10:37 +0100)]
mtd: davinci: if no amif timing is passed, don; t setup cscfg register

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: nand: set correct length to FBCR for a non-full-page write
Liu Shuo [Sun, 4 Dec 2011 04:31:37 +0000 (12:31 +0800)]
mtd: nand: set correct length to FBCR for a non-full-page write

When we do a non-full-page write, the length be set to FBCR should
not be 'elbc_fcm_ctrl->index', it should be 'elbc_fcm_ctrl->index -
elbc_fcm_ctrl->column'.

Signed-off-by: Liu Shuo <b35362@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: nand: use elbc_fcm_ctrl->oob to set FPAR_MS bit of FPAR
Liu Shuo [Sun, 4 Dec 2011 04:31:36 +0000 (12:31 +0800)]
mtd: nand: use elbc_fcm_ctrl->oob to set FPAR_MS bit of FPAR

On both of large-page chip and small-page chip, we always should use
'elbc_fcm_ctrl->oob' to set the FPAR_LP_MS/FPAR_SP_MS bit of FPAR, don't
use a overflowed 'column' to set it.

Signed-off-by: Liu Shuo <b35362@freescale.com>
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd/docg3: fixes and cleanups
Robert Jarzmik [Fri, 2 Dec 2011 19:00:12 +0000 (20:00 +0100)]
mtd/docg3: fixes and cleanups

This patch takes into account checkpatch, sparse and ECC
comments.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtdoops: skip reading initially bad blocks
Roman Tereshonkov [Fri, 2 Dec 2011 13:07:17 +0000 (15:07 +0200)]
mtdoops: skip reading initially bad blocks

Use block_isbad to check and skip the bad blocks reading.
This will allow to get rid of the read errors if bad blocks
are present initially.

Cc: stable@kernel.org
Signed-off-by: Roman Tereshonkov <roman.tereshonkov@nokia.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
12 years agomtd: tests: stresstest: bail out if device has not enough eraseblocks
Wolfram Sang [Tue, 29 Nov 2011 14:34:08 +0000 (15:34 +0100)]
mtd: tests: stresstest: bail out if device has not enough eraseblocks

stresstest needs at least two eraseblocks. Bail out gracefully if that
condition is not met. Fixes the following 'division by zero' OOPS:

[  619.100000] mtd_stresstest: MTD device size 131072, eraseblock size 131072, page size 2048, count of eraseblocks 1, pages per eraseblock 64, OOB size 64
[  619.120000] mtd_stresstest: scanning for bad eraseblocks
[  619.120000] mtd_stresstest: scanned 1 eraseblocks, 0 are bad
[  619.130000] mtd_stresstest: doing operations
[  619.130000] mtd_stresstest: 0 operations done
[  619.140000] Division by zero in kernel.
...

caused by

        /* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
        eb %= (ebcnt - 1);

Cc: stable@kernel.org
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
12 years agomtd: convert drivers/mtd/* to use module_platform_driver()
Axel Lin [Sun, 27 Nov 2011 12:45:03 +0000 (20:45 +0800)]
mtd: convert drivers/mtd/* to use module_platform_driver()

This patch converts the drivers in drivers/mtd/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agoDocumentation: add sysfs entries for mtd docg3 chips
Robert Jarzmik [Tue, 29 Nov 2011 22:16:35 +0000 (23:16 +0100)]
Documentation: add sysfs entries for mtd docg3 chips

Add documentation for MSystems disk-on-chip docg3 chips
sysfs entries, which enable and disable protection areas,
giving or disabling access to the chip's memory.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
12 years agomtd/docg3: dereferencing an ERR_PTR() in docg3_probe()
Dan Carpenter [Mon, 28 Nov 2011 13:53:13 +0000 (16:53 +0300)]
mtd/docg3: dereferencing an ERR_PTR() in docg3_probe()

If doc_probe_device() returned an ERR_PTR, then we accidentally saved
that to docg3_floors[floor] = mtd; which gets derefenced in the error
handling when we call doc_release_device().

I've reworked the error handling to take care of that and hopefully
make it a little simpler.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: Remove redundant spi driver bus initialization
Lars-Peter Clausen [Thu, 24 Nov 2011 15:29:16 +0000 (16:29 +0100)]
mtd: Remove redundant spi driver bus initialization

In ancient times it was necessary to manually initialize the bus field of an
spi_driver to spi_bus_type. These days this is done in spi_driver_register(),
so we can drop the manual assignment.

The patch was generated using the following coccinelle semantic patch:
// <smpl>
@@
identifier _driver;
@@
struct spi_driver _driver = {
.driver = {
- .bus = &spi_bus_type,
},
};
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: gpmi: add missing include 'module.h'
Wolfram Sang [Wed, 23 Nov 2011 14:57:06 +0000 (15:57 +0100)]
mtd: gpmi: add missing include 'module.h'

Fixes:

drivers/mtd/nand/gpmi-nand/gpmi-nand.c: In function 'gpmi_nfc_init':
drivers/mtd/nand/gpmi-nand/gpmi-nand.c:1475:16: error: 'THIS_MODULE' undeclared (first use in this function)
drivers/mtd/nand/gpmi-nand/gpmi-nand.c:1475:16: note: each undeclared identifier is reported only once for each function it appears in
drivers/mtd/nand/gpmi-nand/gpmi-nand.c: At top level:
drivers/mtd/nand/gpmi-nand/gpmi-nand.c:1617:15: error: expected declaration specifiers or '...' before string constant
drivers/mtd/nand/gpmi-nand/gpmi-nand.c:1617:1: warning: data definition has no type or storage class
drivers/mtd/nand/gpmi-nand/gpmi-nand.c:1617:1: warning: type defaults to 'int' in declaration of 'MODULE_AUTHOR'

and some more...

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd/docg3: add protection areas sysfs access
Robert Jarzmik [Sat, 19 Nov 2011 15:02:58 +0000 (16:02 +0100)]
mtd/docg3: add protection areas sysfs access

As each docg3 chip has 2 protection areas (DPS0 and DPS1),
and because theses areas can prevent user access to the chip
data, add for each floor the sysfs entries which insert the
protection key into the right DPS.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add fast mode
Robert Jarzmik [Sat, 19 Nov 2011 15:02:57 +0000 (16:02 +0100)]
mtd/docg3: add fast mode

Docg3 chips can work in 3 modes : normal MLC mode, fast
mode and reliable mode. Normally, as docg3 is a MLC chip, it
should be configured to work in normal mode.

In both normal mode, each page is distinct. This
means that writing to page 12 of blocks 14,15 writes only to
that page, and reading from page 12 of blocks 14,15 reads
only from that page.

In reliable and fast modes, pages are coupled by pairs, and
are clones one of each other. This means that the available
capacity of the chip is halved. Pages are coupled in each
block, and page of index 2*n contains the same data as page
2*n+1 of the same block.

In fast mode, the reads occur a bit faster, but are a bit
less reliable that in normal mode.

When reading from page 2*n, the chip reads bytes from both
page 2*n and page 2*n+1, makes a logical and for each byte,
and returns the result. As programming a page means
"clearing bits", even if a bit was not cleared on one page
because the flash is worn out, the other page has the bit
cleared, and the result of the "AND" gives a correct result.

When writing to page 2*n, the chip writes data to both page
2*n and page 2*n+1.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add suspend and resume
Robert Jarzmik [Sat, 19 Nov 2011 15:02:56 +0000 (16:02 +0100)]
mtd/docg3: add suspend and resume

Add functions to powerdown and powerup from suspend, in
order to save power.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add ECC correction code
Robert Jarzmik [Sat, 19 Nov 2011 15:02:55 +0000 (16:02 +0100)]
mtd/docg3: add ECC correction code

Credit for discovering the BCH algorith parameters, and bit
reversing algorithm is to be give to Mike Dunn and Ivan
Djelic.

The BCH correction code relied upon the BCH library, where
all data and ECC is bit-reversed. The BCH library works
correctly when each input byte is bit-reversed, and
accordingly ECC output is also bit-reversed.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: map erase and write functions
Robert Jarzmik [Sat, 19 Nov 2011 15:02:54 +0000 (16:02 +0100)]
mtd/docg3: map erase and write functions

Map the developped write and erase functions into the mtd
structure.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add erase functions
Robert Jarzmik [Sat, 19 Nov 2011 15:02:53 +0000 (16:02 +0100)]
mtd/docg3: add erase functions

Add erase capability to the docg3 driver. The erase block is
made of 2 physical blocks, as both share all 64 pages. That
makes an erase block of at least 64 kBytes.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add write functions
Robert Jarzmik [Sat, 19 Nov 2011 15:02:52 +0000 (16:02 +0100)]
mtd/docg3: add write functions

Add write capability to the docg3 driver. The writes are
possible on a single page (512 bytes + 16 bytes), even if
that page is split on 2 physical pages on 2 blocks (each on
one plane).

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add OOB buffer to device structure
Robert Jarzmik [Sat, 19 Nov 2011 15:02:51 +0000 (16:02 +0100)]
mtd/docg3: add OOB buffer to device structure

Add OOB buffer area to store the OOB data until the actual
page is written, so that it can be completed by hardware ECC
generator.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add registers for erasing and writing
Robert Jarzmik [Sat, 19 Nov 2011 15:02:50 +0000 (16:02 +0100)]
mtd/docg3: add registers for erasing and writing

Add the required registers and commands to erase and write
flash pages / blocks.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add OOB layout to mtdinfo
Robert Jarzmik [Sat, 19 Nov 2011 15:02:49 +0000 (16:02 +0100)]
mtd/docg3: add OOB layout to mtdinfo

Add OOB layout description for docg3, so that userspace can
use this information to setup the data for write_oob().

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: add multiple floor support
Robert Jarzmik [Sat, 19 Nov 2011 15:02:48 +0000 (16:02 +0100)]
mtd/docg3: add multiple floor support

Add support for multiple floors, ie. cascaded docg3
chips. There might be 4 docg3 chips cascaded, sharing the
same address space, and providing up to 4 times the storage
capacity of a unique chip.

Each floor will be seen as an independant mtd device.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: fix reading oob+data without correction
Robert Jarzmik [Sat, 19 Nov 2011 15:02:47 +0000 (16:02 +0100)]
mtd/docg3: fix reading oob+data without correction

Fix the docg3 reads to be able to cope with all possible
data buffer / oob buffer / file mode combinations from
docg3_read_oob().
This especially ensures that raw reads do not use ECC
corrections, and AUTOOOB and PLACEOOB do use ECC
correction.

The approach is to empty docg3_read() and make it a wrapper
to docg3_read_oob(). As docg3_read_oob() handles all the
funny cases (no data buffer but oob buffer, data buffer but
no oob buffer, ...), docg3_read() is just a special use of
docg3_read_oob().

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: fix BCH registers
Robert Jarzmik [Sat, 19 Nov 2011 15:02:46 +0000 (16:02 +0100)]
mtd/docg3: fix BCH registers

BCH registers are contiguous, not on every byte. Fix the
register definitions.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: fix protection areas reading
Robert Jarzmik [Sat, 19 Nov 2011 15:02:45 +0000 (16:02 +0100)]
mtd/docg3: fix protection areas reading

The protection areas boundaries were on 16bit registers, not
8bit. This is consistent with block numbers, which can
extend up to 4096 on bigger chips (and is 2048 on the
docg3).

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: fix tracing of IO in writeb
Robert Jarzmik [Sat, 19 Nov 2011 15:02:44 +0000 (16:02 +0100)]
mtd/docg3: fix tracing of IO in writeb

Writeb was incorrectly traced as a 16 bits write, instead of
a 8 bits write. Fix it by tracing the correct width.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd/docg3: fix debug log verbosity
Robert Jarzmik [Sat, 19 Nov 2011 15:02:43 +0000 (16:02 +0100)]
mtd/docg3: fix debug log verbosity

Change the NOP debug log verbosity to very verbose to
unburden log analysis.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Reviewed-by: Ivan Djelic <ivan.djelic@parrot.com>
Reviewed-by: Mike Dunn <mikedunn@newsguy.com>
12 years agomtd: ndfc: fix typo in structure dereference
Tony Breeds [Tue, 22 Nov 2011 04:39:11 +0000 (15:39 +1100)]
mtd: ndfc: fix typo in structure dereference

In commit 9d7948c50055e74b693ce9e99a709b2e5bbc1942 (mtd: ndfc: use
ofpart through generic parsing) we dereference a non pointer type
causing the following compiler error:
drivers/mtd/nand/ndfc.c: In function 'ndfc_chip_init':
drivers/mtd/nand/ndfc.c:191: error: invalid type argument of '->' (have 'struct mtd_part_parser_data')

Fix that.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: nand: Making MTD_NAND_OMAP2 depend on ARCH_OMAP2PLUS
Shubhrajyoti D [Wed, 16 Nov 2011 05:18:00 +0000 (10:48 +0530)]
mtd: nand: Making MTD_NAND_OMAP2 depend on ARCH_OMAP2PLUS

Making  MTD_NAND_OMAP2 depend on ARCH_OMAP2PLUS instead of
oring with ARCH2/3/4.

Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: cfi: Allow per-mapping CFI device endianness
Aaron Sierra [Tue, 15 Nov 2011 00:44:34 +0000 (18:44 -0600)]
mtd: cfi: Allow per-mapping CFI device endianness

This patch allows each CFI device map to use its own endianness. The
globally defined CFI endianness (CONFIG_MTD_CFI_NOSWAP,
CONFIG_MTD_CFI_BE_BYTE_SWAP or CONFIG_MTD_CFI_LE_BYTE_SWAP) becomes the
default value which can be overridden by a driver for a particular device.

Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: pxa2xx-flash.c: It used to fall back to provided table.
Jonathan Cameron [Fri, 11 Nov 2011 17:06:20 +0000 (17:06 +0000)]
mtd: pxa2xx-flash.c: It used to fall back to provided table.

Make this work again.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
12 years agomtd: mtd_blkdevs: don't increase 'open' count on error path
Brian Norris [Mon, 7 Nov 2011 23:51:05 +0000 (15:51 -0800)]
mtd: mtd_blkdevs: don't increase 'open' count on error path

Some error paths in mtd_blkdevs were fixed in the following commit:

    commit 94735ec4044a6d318b83ad3c5794e931ed168d10
    mtd: mtd_blkdevs: fix error path in blktrans_open

But on these error paths, the block device's `dev->open' count is
already incremented before we check for errors. This meant that, while
the error path was handled correctly on the first time through
blktrans_open(), the device is erroneously considered already open on
the second time through.

This problem can be seen, for instance, when a UBI volume is
simultaneously mounted as a UBIFS partition and read through its
corresponding gluebi mtdblockX device. This results in blktrans_open()
passing its error checks (with `dev->open > 0') without actually having
a handle on the device. Here's a summarized log of the actions and
results with nandsim:

    # modprobe nandsim
    # modprobe mtdblock
    # modprobe gluebi
    # modprobe ubifs
    # ubiattach /dev/ubi_ctrl -m 0
    ...
    # ubimkvol /dev/ubi0 -N test -s 16MiB
    ...
    # mount -t ubifs ubi0:test /mnt
    # ls /dev/mtdblock*
    /dev/mtdblock0  /dev/mtdblock1
    # cat /dev/mtdblock1 > /dev/null
    cat: can't open '/dev/mtdblock4': Device or resource busy
    # cat /dev/mtdblock1 > /dev/null

    CPU 0 Unable to handle kernel paging request at virtual address
    fffffff0, epc == 8031536c, ra == 8031f280
    Oops[#1]:
    ...
    Call Trace:
    [<8031536c>] ubi_leb_read+0x14/0x164
    [<8031f280>] gluebi_read+0xf0/0x148
    [<802edba8>] mtdblock_readsect+0x64/0x198
    [<802ecfe4>] mtd_blktrans_thread+0x330/0x3f4
    [<8005be98>] kthread+0x88/0x90
    [<8000bc04>] kernel_thread_helper+0x10/0x18

Cc: stable@kernel.org [3.0+]
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
13 years agomtd: nand: scan 1st and 2nd page for Macronix SLC
Brian Norris [Wed, 2 Nov 2011 20:34:44 +0000 (13:34 -0700)]
mtd: nand: scan 1st and 2nd page for Macronix SLC

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
13 years agomtd: nand: add 512 Mbit device code (Macronix)
Brian Norris [Wed, 2 Nov 2011 20:34:43 +0000 (13:34 -0700)]
mtd: nand: add 512 Mbit device code (Macronix)

Macronix MX30LF1208AA is a 512 Mbit NAND with device code 0xF0.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
13 years agomtd: nand: add Macronix manufacturer
Brian Norris [Wed, 2 Nov 2011 20:34:42 +0000 (13:34 -0700)]
mtd: nand: add Macronix manufacturer

Macronix is produing SLC NAND MX30LF1208AA, so add their manufacturer
code to the manufacturer lists.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@intel.com>
13 years agoLinux 3.2-rc1 v3.2-rc1
Linus Torvalds [Tue, 8 Nov 2011 00:16:02 +0000 (16:16 -0800)]
Linux 3.2-rc1

.. with new name.  Because nothing says "really solid kernel release"
like naming it after an extinct animal that just happened to be in the
news lately.

13 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux...
Linus Torvalds [Tue, 8 Nov 2011 00:14:26 +0000 (16:14 -0800)]
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (31 commits)
  ARM: OMAP: Fix export.h or module.h includes
  ARM: OMAP: omap_device: Include linux/export.h
  ARM: OMAP2: Fix H4 matrix keyboard warning
  ARM: OMAP1: Remove unused omap-alsa.h
  ARM: OMAP1: Fix warnings about enabling 32 KiHz timer
  ARM: OMAP2+: timer: Remove omap_device_pm_latency
  ARM: OMAP2+: clock data: Remove redundant timer clkdev
  ARM: OMAP: Devkit8000: Remove double omap_mux_init_gpio
  ARM: OMAP: usb: musb: OMAP: Delete unused function
  MAINTAINERS: Update linux-omap git repository
  ARM: OMAP: change get_context_loss_count ret value to int
  ARM: OMAP4: hsmmc: configure SDMMC1_DR0 properly
  ARM: OMAP4: hsmmc: Fix Pbias configuration on regulator OFF
  ARM: OMAP3: hwmod: fix variant registration and remove SmartReflex from common list
  ARM: OMAP: I2C: Fix omap_register_i2c_bus() return value on success
  ARM: OMAP: dmtimer: Include linux/module.h
  ARM: OMAP2+: l3-noc: Include linux/module.h
  ARM: OMAP2+: devices: Fixes for McPDM
  ARM: OMAP: Fix errors and warnings when building for one board
  ARM: OMAP3: PM: restrict erratum i443 handling to OMAP3430 only
  ...

13 years agoVFS: we need to set LOOKUP_JUMPED on mountpoint crossing
Al Viro [Mon, 7 Nov 2011 21:21:26 +0000 (21:21 +0000)]
VFS: we need to set LOOKUP_JUMPED on mountpoint crossing

Mountpoint crossing is similar to following procfs symlinks - we do
not get ->d_revalidate() called for dentry we have arrived at, with
unpleasant consequences for NFS4.

Simple way to reproduce the problem in mainline:

    cat >/tmp/a.c <<'EOF'
    #include <unistd.h>
    #include <fcntl.h>
    #include <stdio.h>
    main()
    {
            struct flock fl = {.l_type = F_RDLCK, .l_whence = SEEK_SET, .l_len = 1};
            if (fcntl(0, F_SETLK, &fl))
                    perror("setlk");
    }
    EOF
    cc /tmp/a.c -o /tmp/test

then on nfs4:

    mount --bind file1 file2
    /tmp/test < file1 # ok
    /tmp/test < file2 # spews "setlk: No locks available"...

What happens is the missing call of ->d_revalidate() after mountpoint
crossing and that's where NFS4 would issue OPEN request to server.

The fix is simple - treat mountpoint crossing the same way we deal with
following procfs-style symlinks.  I.e.  set LOOKUP_JUMPED...

Cc: stable@kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 7 Nov 2011 20:38:11 +0000 (12:38 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf top: Fix live annotation in the --stdio interface
  perf top tui: Don't recalc column widths considering just the first page
  perf report: Add progress bar when processing time ordered events
  perf hists browser: Warn about lost events
  perf tools: Fix a typo of command name as trace-cmd
  perf hists: Fix recalculation of total_period when sorting entries
  perf header: Fix build on old systems
  perf ui browser: Handle K_RESIZE in dialog windows
  perf ui browser: No need to switch char sets that often
  perf hists browser: Use K_TIMER
  perf ui: Rename ui__warning_paranoid to ui__error_paranoid
  perf ui: Reimplement the popup windows using libslang
  perf ui: Reimplement ui__popup_menu using ui__browser
  perf ui: Reimplement ui_helpline using libslang
  perf ui: Improve handling sigwinch a bit
  perf ui progress: Reimplement using slang
  perf evlist: Fix grouping of multiple events

13 years agoMerge branch 'fixes-modulesplit' into fixes
Tony Lindgren [Mon, 7 Nov 2011 20:27:23 +0000 (12:27 -0800)]
Merge branch 'fixes-modulesplit' into fixes

13 years agoARM: OMAP: Fix export.h or module.h includes
Tony Lindgren [Mon, 7 Nov 2011 20:27:10 +0000 (12:27 -0800)]
ARM: OMAP: Fix export.h or module.h includes

Commit 32aaeffbd4a7457bf2f7448b33b5946ff2a960eb (Merge branch
'modsplit-Oct31_2011'...) caused some build errors. Fix these
and make sure we always have export.h or module.h included
for MODULE_ and EXPORT_SYMBOL users:

$ grep -rl ^MODULE_ arch/arm/*omap*/*.c | xargs \
  grep -L linux/module.h
  arch/arm/mach-omap2/dsp.c
  arch/arm/mach-omap2/mailbox.c
  arch/arm/mach-omap2/omap-iommu.c
  arch/arm/mach-omap2/smartreflex.c

Also check we either have export.h or module.h included
for the files exporting symbols:

$ grep -rl EXPORT_SYMBOL arch/arm/*omap*/*.c | xargs \
  grep -L linux/export.h | xargs grep -L linux/module.h

Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoARM: OMAP: omap_device: Include linux/export.h
Axel Lin [Mon, 7 Nov 2011 20:27:10 +0000 (12:27 -0800)]
ARM: OMAP: omap_device: Include linux/export.h

Include linux/export.h to fix below build warning:

  CC      arch/arm/plat-omap/omap_device.o
arch/arm/plat-omap/omap_device.c:1055: warning: data definition has no type or storage class
arch/arm/plat-omap/omap_device.c:1055: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL'
arch/arm/plat-omap/omap_device.c:1055: warning: parameter names (without types) in function declaration

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Mon, 7 Nov 2011 18:55:33 +0000 (10:55 -0800)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits)
  forcedeth: fix a few sparse warnings (variable shadowing)
  forcedeth: Improve stats counters
  forcedeth: remove unneeded stats updates
  forcedeth: Acknowledge only interrupts that are being processed
  forcedeth: fix race when unloading module
  MAINTAINERS/rds: update maintainer
  wanrouter: Remove kernel_lock annotations
  usbnet: fix oops in usbnet_start_xmit
  ixgbe: Fix compile for kernel without CONFIG_PCI_IOV defined
  etherh: Add MAINTAINERS entry for etherh
  bonding: comparing a u8 with -1 is always false
  sky2: fix regression on Yukon Optima
  netlink: clarify attribute length check documentation
  netlink: validate NLA_MSECS length
  i825xx:xscale:8390:freescale: Fix Kconfig dependancies
  macvlan: receive multicast with local address
  tg3: Update version to 3.121
  tg3: Eliminate timer race with reset_task
  tg3: Schedule at most one tg3_reset_task run
  tg3: Obtain PCI function number from device
  ...

13 years agovfs: d_invalidate() should leave mountpoints alone
Al Viro [Mon, 7 Nov 2011 16:39:57 +0000 (16:39 +0000)]
vfs: d_invalidate() should leave mountpoints alone

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoforcedeth: fix a few sparse warnings (variable shadowing)
david decotigny [Sat, 5 Nov 2011 14:38:24 +0000 (14:38 +0000)]
forcedeth: fix a few sparse warnings (variable shadowing)

This fixes the following sparse warnings:
drivers/net/ethernet/nvidia/forcedeth.c:2113:7: warning: symbol 'size' shadows an earlier one
drivers/net/ethernet/nvidia/forcedeth.c:2102:6: originally declared here
drivers/net/ethernet/nvidia/forcedeth.c:2155:7: warning: symbol 'size' shadows an earlier one
drivers/net/ethernet/nvidia/forcedeth.c:2102:6: originally declared here
drivers/net/ethernet/nvidia/forcedeth.c:2227:7: warning: symbol 'size' shadows an earlier one
drivers/net/ethernet/nvidia/forcedeth.c:2215:6: originally declared here
drivers/net/ethernet/nvidia/forcedeth.c:2271:7: warning: symbol 'size' shadows an earlier one
drivers/net/ethernet/nvidia/forcedeth.c:2215:6: originally declared here
drivers/net/ethernet/nvidia/forcedeth.c:2986:20: warning: symbol 'addr' shadows an earlier one
drivers/net/ethernet/nvidia/forcedeth.c:2963:6: originally declared here

Signed-off-by: David Decotigny <david.decotigny@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoforcedeth: Improve stats counters
Mandeep Baines [Sat, 5 Nov 2011 14:38:23 +0000 (14:38 +0000)]
forcedeth: Improve stats counters

Rx byte count was off; instead use the hardware's count.  Tx packet
count was counting pre-TSO packets; instead count on-the-wire packets.
Report hardware dropped frame count as rx_fifo_errors.

- The count of transmitted packets reported by the forcedeth driver
  reports pre-TSO (TCP Segmentation Offload) packet counts and not the
  count of the number of packets sent on the wire. This change fixes
  the forcedeth driver to report the correct count. Fixed the code by
  copying the count stored in the NIC H/W to the value reported by the
  driver.

- Count rx_drop_frame errors as rx_fifo_errors:
  We see a lot of rx_drop_frame errors if we disable the rx bottom-halves
  for too long.  Normally, rx_fifo_errors would be counted in this case.
  The rx_drop_frame error count is private to forcedeth and is not
  reported by ifconfig or sysfs.  The rx_fifo_errors count is currently
  unused in the forcedeth driver.  It is reported by ifconfig as overruns.
  This change reports rx_drop_frame errors as rx_fifo_errors.

Signed-off-by: David Decotigny <david.decotigny@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoforcedeth: remove unneeded stats updates
david decotigny [Sat, 5 Nov 2011 14:38:22 +0000 (14:38 +0000)]
forcedeth: remove unneeded stats updates

Function ndo_get_stats() updates most of the stats from hardware
registers, making the manual updates un-needed. This change removes
these manual updates. Main exception is rx_missed_errors which needs
manual update.

Another exception is rx_packets, still updated manually in this commit
to make sure this patch doesn't change behavior of driver. This will
be addressed by a future patch.

Signed-off-by: David Decotigny <david.decotigny@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoforcedeth: Acknowledge only interrupts that are being processed
Mike Ditto [Sat, 5 Nov 2011 14:38:21 +0000 (14:38 +0000)]
forcedeth: Acknowledge only interrupts that are being processed

This is to avoid a race, accidentally acknowledging an interrupt that
we didn't notice and won't immediately process.  This is based solely
on code inspection; it is not known if there was an actual bug here.

Signed-off-by: David Decotigny <david.decotigny@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoforcedeth: fix race when unloading module
david decotigny [Sat, 5 Nov 2011 14:38:20 +0000 (14:38 +0000)]
forcedeth: fix race when unloading module

When forcedeth module is unloaded, there exists a path that can lead
to mod_timer() after del_timer_sync(), causing an oops. This patch
short-circuits this unneeded path, which originates in
nv_get_ethtool_stats().

Tested:
  x86_64 16-way + 3 ethtool -S infinite loops + 100Mbps incoming traffic
  + rmmod/modprobe/ifconfig in a loop

Initial-Author: Salman Qazi <sqazi@google.com>
Discussion: http://patchwork.ozlabs.org/patch/123548/

Signed-off-by: David Decotigny <david.decotigny@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agodevice-mapper: using EXPORT_SYBOL in dm-space-map-checker.c needs export.h
Stephen Rothwell [Tue, 1 Nov 2011 09:27:43 +0000 (20:27 +1100)]
device-mapper: using EXPORT_SYBOL in dm-space-map-checker.c needs export.h

Reported-by: Witold Baryluk <baryluk@smp.if.uj.edu.pl>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodevice-mapper: dm-bufio.c needs to include module.h
Stephen Rothwell [Tue, 1 Nov 2011 07:30:49 +0000 (18:30 +1100)]
device-mapper: dm-bufio.c needs to include module.h

since it uses the module facilities.

Reported-by: Witold Baryluk <baryluk@smp.if.uj.edu.pl>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/md: change module.h -> export.h in persistent-data/dm-*
Paul Gortmaker [Wed, 28 Sep 2011 22:29:32 +0000 (18:29 -0400)]
drivers/md: change module.h -> export.h in persistent-data/dm-*

For the files which are not themselves modular, we can change
them to include only the smaller export.h since all they are
doing is looking for EXPORT_SYMBOL.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoarm: Add export.h to recently added files for EXPORT_SYMBOL
Paul Gortmaker [Sun, 9 Oct 2011 03:24:48 +0000 (23:24 -0400)]
arm: Add export.h to recently added files for EXPORT_SYMBOL

These files didn't exist at the time of the module.h split, and
so were not fixed by the commits on that baseline.  Since they use
the EXPORT_SYMBOL and/or THIS_MODULE macros, they will need the
new export.h file included that provides them.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMAINTAINERS/rds: update maintainer
Or Gerlitz [Mon, 7 Nov 2011 18:28:20 +0000 (13:28 -0500)]
MAINTAINERS/rds: update maintainer

update for the actual maintainer

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agowanrouter: Remove kernel_lock annotations
Richard Weinberger [Mon, 7 Nov 2011 18:27:30 +0000 (13:27 -0500)]
wanrouter: Remove kernel_lock annotations

The BKL is gone, these annotations are useless.

Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agousbnet: fix oops in usbnet_start_xmit
Konstantin Khlebnikov [Mon, 7 Nov 2011 05:54:58 +0000 (05:54 +0000)]
usbnet: fix oops in usbnet_start_xmit

This patch fixes the bug added in commit v3.1-rc7-1055-gf9b491e
SKB can be NULL at this point, at least for cdc-ncm.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoixgbe: Fix compile for kernel without CONFIG_PCI_IOV defined
Rose, Gregory V [Mon, 7 Nov 2011 07:44:17 +0000 (07:44 +0000)]
ixgbe: Fix compile for kernel without CONFIG_PCI_IOV defined

Fix compiler errors and warnings with CONFIG_PCI_IOV defined and not
defined.

Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Linus Torvalds [Mon, 7 Nov 2011 18:13:52 +0000 (10:13 -0800)]
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  cpuidle: Single/Global registration of idle states
  cpuidle: Split cpuidle_state structure and move per-cpu statistics fields
  cpuidle: Remove CPUIDLE_FLAG_IGNORE and dev->prepare()
  cpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state
  ACPI: Fix CONFIG_ACPI_DOCK=n compiler warning
  ACPI: Export FADT pm_profile integer value to userspace
  thermal: Prevent polling from happening during system suspend
  ACPI: Drop ACPI_NO_HARDWARE_INIT
  ACPI atomicio: Convert width in bits to bytes in __acpi_ioremap_fast()
  PNPACPI: Simplify disabled resource registration
  ACPI: Fix possible recursive locking in hwregs.c
  ACPI: use kstrdup()
  mrst pmu: update comment
  tools/power turbostat: less verbose debugging

13 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Mon, 7 Nov 2011 18:01:56 +0000 (10:01 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (40 commits)
  vmwgfx: Snoop DMA transfers with non-covering sizes
  vmwgfx: Move the prefered mode first in the list
  vmwgfx: Unreference surface on cursor error path
  vmwgfx: Free prefered mode on error path
  vmwgfx: Use pointer return error codes
  vmwgfx: Fix hw cursor position
  vmwgfx: Infrastructure for explicit placement
  vmwgfx: Make the preferred autofit mode have a 60Hz vrefresh
  vmwgfx: Remove screen object active list
  vmwgfx: Screen object cleanups
  drm/radeon/kms: consolidate GART code, fix segfault after GPU lockup V2
  drm/radeon/kms: don't poll forever if MC GDDR link training fails
  drm/radeon/kms: fix DP setup on TRAVIS bridges
  drm/radeon/kms: set HPD polarity in hpd_init()
  drm/radeon/kms: add MSI module parameter
  drm/radeon/kms: Add MSI quirk for Dell RS690
  drm/radeon/kms: Add MSI quirk for HP RS690
  drm/radeon/kms: split MSI check into a separate function
  vmwgfx: Reinstate the update_layout ioctl
  drm/radeon/kms: always do extended edid probe
  ...

13 years agoMerge branch 'urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 7 Nov 2011 17:59:02 +0000 (09:59 -0800)]
Merge branch 'urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux

* 'urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
  writeback: fix uninitialized task_ratelimit

13 years agoMerge git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Mon, 7 Nov 2011 17:56:22 +0000 (09:56 -0800)]
Merge git://git.samba.org/sfrench/cifs-2.6

* git://git.samba.org/sfrench/cifs-2.6:
  CIFS: Cleanup byte-range locking code style
  CIFS: Simplify setlk error handling for mandatory locking

13 years agoMerge git://git.infradead.org/mtd-2.6
Linus Torvalds [Mon, 7 Nov 2011 17:11:16 +0000 (09:11 -0800)]
Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6: (226 commits)
  mtd: tests: annotate as DANGEROUS in Kconfig
  mtd: tests: don't use mtd0 as a default
  mtd: clean up usage of MTD_DOCPROBE_ADDRESS
  jffs2: add compr=lzo and compr=zlib options
  jffs2: implement mount option parsing and compression overriding
  mtd: nand: initialize ops.mode
  mtd: provide an alias for the redboot module name
  mtd: m25p80: don't probe device which has status of 'disabled'
  mtd: nand_h1900 never worked
  mtd: Add DiskOnChip G3 support
  mtd: m25p80: add EON flash EN25Q32B into spi flash id table
  mtd: mark block device queue as non-rotational
  mtd: r852: make r852_pm_ops static
  mtd: m25p80: add support for at25df321a spi data flash
  mtd: mxc_nand: preset_v1_v2: unlock all NAND flash blocks
  mtd: nand: switch `check_pattern()' to standard `memcmp()'
  mtd: nand: invalidate cache on unaligned reads
  mtd: nand: do not scan bad blocks with NAND_BBT_NO_OOB set
  mtd: nand: wait to set BBT version
  mtd: nand: scrub BBT on ECC errors
  ...

Fix up trivial conflicts:
 - arch/arm/mach-at91/board-usb-a9260.c
Merged into board-usb-a926x.c
 - drivers/mtd/maps/lantiq-flash.c
add_mtd_partitions -> mtd_device_register vs changed to use
mtd_device_parse_register.

13 years agoMerge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
Linus Torvalds [Mon, 7 Nov 2011 16:52:19 +0000 (08:52 -0800)]
Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6

* 'linux-next' of git://git.infradead.org/ubifs-2.6:
  UBIFS: fix the dark space calculation
  UBIFS: introduce a helper to dump scanning info

13 years agovmwgfx: Snoop DMA transfers with non-covering sizes
Jakob Bornecrantz [Thu, 3 Nov 2011 20:03:08 +0000 (21:03 +0100)]
vmwgfx: Snoop DMA transfers with non-covering sizes

Enough to get cursors working under Wayland.

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Move the prefered mode first in the list
Jakob Bornecrantz [Thu, 3 Nov 2011 20:03:07 +0000 (21:03 +0100)]
vmwgfx: Move the prefered mode first in the list

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Unreference surface on cursor error path
Jakob Bornecrantz [Thu, 3 Nov 2011 20:03:06 +0000 (21:03 +0100)]
vmwgfx: Unreference surface on cursor error path

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Free prefered mode on error path
Jakob Bornecrantz [Thu, 3 Nov 2011 20:03:05 +0000 (21:03 +0100)]
vmwgfx: Free prefered mode on error path

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Use pointer return error codes
Jakob Bornecrantz [Thu, 3 Nov 2011 20:03:04 +0000 (21:03 +0100)]
vmwgfx: Use pointer return error codes

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Fix hw cursor position
Thomas Hellstrom [Wed, 2 Nov 2011 08:43:12 +0000 (09:43 +0100)]
vmwgfx: Fix hw cursor position

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Infrastructure for explicit placement
Thomas Hellstrom [Wed, 2 Nov 2011 08:43:11 +0000 (09:43 +0100)]
vmwgfx: Infrastructure for explicit placement

Make it possible to use explicit placement
(although not hooked up with a user-space interface yet)
and relax the single framebuffer limit to only apply to implicit placement.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Make the preferred autofit mode have a 60Hz vrefresh
Thomas Hellstrom [Wed, 2 Nov 2011 08:43:10 +0000 (09:43 +0100)]
vmwgfx: Make the preferred autofit mode have a 60Hz vrefresh

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Remove screen object active list
Thomas Hellstrom [Wed, 2 Nov 2011 08:43:09 +0000 (09:43 +0100)]
vmwgfx: Remove screen object active list

It isn't used for anything. Replace with an active bool.

Also make a couple of functions return void instead of int
since their return value wasn't checked anyway.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakbo Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agovmwgfx: Screen object cleanups
Thomas Hellstrom [Wed, 2 Nov 2011 08:43:08 +0000 (09:43 +0100)]
vmwgfx: Screen object cleanups

Remove unused member.
No need to pin / unpin fb.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agowriteback: fix uninitialized task_ratelimit
Wu Fengguang [Mon, 7 Nov 2011 11:19:28 +0000 (19:19 +0800)]
writeback: fix uninitialized task_ratelimit

In balance_dirty_pages() task_ratelimit may be not initialized
(initialization skiped by goto pause), and then used when calling
tracing hook.

Fix it by moving the task_ratelimit assignment before goto pause.

Reported-by: Witold Baryluk <baryluk@smp.if.uj.edu.pl>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
13 years agoRevert "hvc_console: display printk messages on console."
Linus Torvalds [Mon, 7 Nov 2011 06:22:16 +0000 (22:22 -0800)]
Revert "hvc_console: display printk messages on console."

This reverts commit 361162459f62dc0826b82c9690a741a940f457f0.

It causes an infinite loop when booting Linux under Xen, as so:

  [    2.382984] console [hvc0] enabled
  [    2.382984] console [hvc0] enabled
  [    2.382984] console [hvc0] enabled
  ...

as reported by Konrad Rzeszutek Wilk.  And Rusty reports the same for
lguest.  He goes on to say:

   "This is not a concurrency problem: the issue seems to be that
    calling register_console() twice on the same struct console is a bad
    idea."

and Greg says he'll fix it up properly at some point later. Revert for now.

Reported-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reported-by: Rusty Russell <rusty@ozlabs.org>
Requested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Miche Baker-Harvey <miche@google.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agopowerpc: fix building hvc_opal.c
Michael Neuling [Mon, 7 Nov 2011 06:12:28 +0000 (17:12 +1100)]
powerpc: fix building hvc_opal.c

Fix building following build error:

  drivers/tty/hvc/hvc_opal.c:244:12: error: 'THIS_MODULE' undeclared here (not in a function)

Signed-off-by: Michael Neuling <mikey@neuling.org>
[ New file from powerpc tree not following the new rules from the
  module.h split, both of which were merged today.  - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'upstream/jump-label-noearly' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Mon, 7 Nov 2011 04:20:46 +0000 (20:20 -0800)]
Merge branch 'upstream/jump-label-noearly' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen

* 'upstream/jump-label-noearly' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
  jump-label: initialize jump-label subsystem much earlier
  x86/jump_label: add arch_jump_label_transform_static()
  s390/jump-label: add arch_jump_label_transform_static()
  jump_label: add arch_jump_label_transform_static() to optimise non-live code updates
  sparc/jump_label: drop arch_jump_label_text_poke_early()
  x86/jump_label: drop arch_jump_label_text_poke_early()
  jump_label: if a key has already been initialized, don't nop it out
  stop_machine: make stop_machine safe and efficient to call early
  jump_label: use proper atomic_t initializer

Conflicts:
 - arch/x86/kernel/jump_label.c
Added __init_or_module to arch_jump_label_text_poke_early vs
removal of that function entirely
 - kernel/stop_machine.c
same patch ("stop_machine: make stop_machine safe and efficient
to call early") merged twice, with whitespace fix in one version

13 years agoMerge branch 'upstream/xen-settime' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 7 Nov 2011 04:15:05 +0000 (20:15 -0800)]
Merge branch 'upstream/xen-settime' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen

* 'upstream/xen-settime' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
  xen/dom0: set wallclock time in Xen
  xen: add dom0_op hypercall
  xen/acpi: Domain0 acpi parser related platform hypercall

13 years agoMerge branch 'stable/cleanups-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 7 Nov 2011 04:13:34 +0000 (20:13 -0800)]
Merge branch 'stable/cleanups-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

* 'stable/cleanups-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: use static initializers in xen-balloon.c
  Xen: fix braces and tabs coding style issue in xenbus_probe.c
  Xen: fix braces coding style issue in xenbus_probe.h
  Xen: fix whitespaces,tabs coding style issue in drivers/xen/pci.c
  Xen: fix braces coding style issue in gntdev.c and grant-table.c
  Xen: fix whitespaces,tabs coding style issue in drivers/xen/events.c
  Xen: fix whitespaces,tabs coding style issue in drivers/xen/balloon.c

Fix up trivial whitespace-conflicts in
 drivers/xen/{balloon.c,pci.c,xenbus/xenbus_probe.c}

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Mon, 7 Nov 2011 04:03:41 +0000 (20:03 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (114 commits)
  Btrfs: check for a null fs root when writing to the backup root log
  Btrfs: fix race during transaction joins
  Btrfs: fix a potential btrfs_bio leak on scrub fixups
  Btrfs: rename btrfs_bio multi -> bbio for consistency
  Btrfs: stop leaking btrfs_bios on readahead
  Btrfs: stop the readahead threads on failed mount
  Btrfs: fix extent_buffer leak in the metadata IO error handling
  Btrfs: fix the new inspection ioctls for 32 bit compat
  Btrfs: fix delayed insertion reservation
  Btrfs: ClearPageError during writepage and clean_tree_block
  Btrfs: be smarter about committing the transaction in reserve_metadata_bytes
  Btrfs: make a delayed_block_rsv for the delayed item insertion
  Btrfs: add a log of past tree roots
  btrfs: separate superblock items out of fs_info
  Btrfs: use the global reserve when truncating the free space cache inode
  Btrfs: release metadata from global reserve if we have to fallback for unlink
  Btrfs: make sure to flush queued bios if write_cache_pages waits
  Btrfs: fix extent pinning bugs in the tree log
  Btrfs: make sure btrfs_remove_free_space doesn't leak EAGAIN
  Btrfs: don't wait as long for more batches during SSD log commit
  ...

13 years agoMerge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 7 Nov 2011 03:44:47 +0000 (19:44 -0800)]
Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

* 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (230 commits)
  Revert "tracing: Include module.h in define_trace.h"
  irq: don't put module.h into irq.h for tracking irqgen modules.
  bluetooth: macroize two small inlines to avoid module.h
  ip_vs.h: fix implicit use of module_get/module_put from module.h
  nf_conntrack.h: fix up fallout from implicit moduleparam.h presence
  include: replace linux/module.h with "struct module" wherever possible
  include: convert various register fcns to macros to avoid include chaining
  crypto.h: remove unused crypto_tfm_alg_modname() inline
  uwb.h: fix implicit use of asm/page.h for PAGE_SIZE
  pm_runtime.h: explicitly requires notifier.h
  linux/dmaengine.h: fix implicit use of bitmap.h and asm/page.h
  miscdevice.h: fix up implicit use of lists and types
  stop_machine.h: fix implicit use of smp.h for smp_processor_id
  of: fix implicit use of errno.h in include/linux/of.h
  of_platform.h: delete needless include <linux/module.h>
  acpi: remove module.h include from platform/aclinux.h
  miscdevice.h: delete unnecessary inclusion of module.h
  device_cgroup.h: delete needless include <linux/module.h>
  net: sch_generic remove redundant use of <linux/module.h>
  net: inet_timewait_sock doesnt need <linux/module.h>
  ...

Fix up trivial conflicts (other header files, and  removal of the ab3550 mfd driver) in
 - drivers/media/dvb/frontends/dibx000_common.c
 - drivers/media/video/{mt9m111.c,ov6650.c}
 - drivers/mfd/ab3550-core.c
 - include/linux/dmaengine.h

13 years agoMerge branches 'acpi', 'idle', 'mrst-pmu' and 'pm-tools' into next
Len Brown [Mon, 7 Nov 2011 03:14:50 +0000 (22:14 -0500)]
Merge branches 'acpi', 'idle', 'mrst-pmu' and 'pm-tools' into next

13 years agoMerge branches 'atomic-io', 'lockdep', 'misc', 'pm-profile' and 'pnp-cleanup' into...
Len Brown [Mon, 7 Nov 2011 03:10:14 +0000 (22:10 -0500)]
Merge branches 'atomic-io', 'lockdep', 'misc', 'pm-profile' and 'pnp-cleanup' into acpi

13 years agoMerge branch 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 7 Nov 2011 03:02:23 +0000 (19:02 -0800)]
Merge branch 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux

* 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
  writeback: Add a 'reason' to wb_writeback_work
  writeback: send work item to queue_io, move_expired_inodes
  writeback: trace event balance_dirty_pages
  writeback: trace event bdi_dirty_ratelimit
  writeback: fix ppc compile warnings on do_div(long long, unsigned long)
  writeback: per-bdi background threshold
  writeback: dirty position control - bdi reserve area
  writeback: control dirty pause time
  writeback: limit max dirty pause time
  writeback: IO-less balance_dirty_pages()
  writeback: per task dirty rate limit
  writeback: stabilize bdi->dirty_ratelimit
  writeback: dirty rate control
  writeback: add bg_threshold parameter to __bdi_update_bandwidth()
  writeback: dirty position control
  writeback: account per-bdi accumulated dirtied pages

13 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Mon, 7 Nov 2011 03:00:42 +0000 (19:00 -0800)]
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: use ->exectute_task for all CDB emulation
  target: remove SCF_EMULATE_CDB_ASYNC
  target: refactor transport_emulate_control_cdb
  target: pass the se_task to the CDB emulation callback
  target: split core_scsi3_emulate_pr
  target: split core_scsi2_emulate_crh
  target: Add generic active I/O shutdown logic
  target: add back error handling in transport_complete_task
  target/pscsi: blk_make_request() returns an ERR_PTR()
  target: Remove core TRANSPORT_FREE_CMD_INTR usage
  target: Make TFO->check_stop_free return free status
  iscsi-target: Fix non-immediate TMR handling
  iscsi-target: Add missing CMDSN_LOWER_THAN_EXP check in iscsit_handle_scsi_cmd
  target: Avoid double list_del for aborted se_tmr_req
  target: Minor cleanups to core_tmr_drain_tmr_list
  target: Fix wrong se_tmr being added to drain_tmr_list
  target: Fix incorrect se_cmd assignment in core_tmr_drain_tmr_list
  target: Check -ENOMEM to signal QUEUE_FULL from fabric callbacks
  tcm_loop: Add explict read buffer memset for SCF_SCSI_CONTROL_SG_IO_CDB
  target: Fix compile warning w/ missing module.h include

13 years agoMerge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Linus Torvalds [Mon, 7 Nov 2011 02:54:53 +0000 (18:54 -0800)]
Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

* 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  scsi: drop unused Kconfig symbol
  pci: drop unused Kconfig symbol
  stmmac: drop unused Kconfig symbol
  x86: drop unused Kconfig symbol
  powerpc: drop unused Kconfig symbols
  powerpc: 40x: drop unused Kconfig symbol
  mips: drop unused Kconfig symbols
  openrisc: drop unused Kconfig symbols
  arm: at91: drop unused Kconfig symbol
  samples: drop unused Kconfig symbol
  m32r: drop unused Kconfig symbol
  score: drop unused Kconfig symbols
  sh: drop unused Kconfig symbol
  um: drop unused Kconfig symbol
  sparc: drop unused Kconfig symbol
  alpha: drop unused Kconfig symbol

Fix up trivial conflict in drivers/net/ethernet/stmicro/stmmac/Kconfig
as per Michal: the STMMAC_DUAL_MAC config variable is still unused and
should be deleted.

13 years agoMerge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Linus Torvalds [Mon, 7 Nov 2011 02:53:33 +0000 (18:53 -0800)]
Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

* 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  script/checkpatch.pl: warn about deprecated use of EXTRA_{A,C,CPP,LD}FLAGS
  tags, powerpc: Update tags.sh to support _GLOBAL symbols
  scripts: add extract-vmlinux

13 years agoMerge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Linus Torvalds [Mon, 7 Nov 2011 02:52:52 +0000 (18:52 -0800)]
Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  scripts/kconfig/nconf: add KEY_HOME / KEY_END for dialog_inputbox
  scripts/kconfig/nconf: fix editing long strings
  scripts/kconfig/nconf: dynamically alloc dialog_input_result
  scripts/kconfig/nconf: fix memmove's length arg
  scripts/kconfig/nconf: fix typo: unknow => unknown
  kconfig: fix set but not used variables
  kconfig: handle SIGINT in menuconfig
  kconfig: fix __enabled_ macros definition for invisible and un-selected symbols
  kconfig: factor code in menu_get_ext_help()
  kbuild: Fix help text not displayed in choice option.
  kconfig/nconf: nuke unreferenced `nohelp_text'
  kconfig/streamline_config.pl: merge local{mod,yes}config
  kconfig/streamline_config.pl: use options to determine operating mode
  kconfig/streamline_config.pl: directly access LSMOD from the environment

13 years agoMerge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Linus Torvalds [Mon, 7 Nov 2011 02:41:27 +0000 (18:41 -0800)]
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  Kbuild: append missing-syscalls to the default target list
  genksyms: Regenerate lexer and parser
  genksyms: Do not expand internal types
  genksyms: Minor parser cleanup
  Makefile: remove a duplicated line
  fixdep: fix extraneous dependencies
  scripts/Makefile.build: do not reference EXTRA_CFLAGS as CFLAGS replacement
  kbuild: prevent make from deleting _shipped files
  kbuild: Do not delete empty files in make distclean

13 years agohid/apple: modern macbook airs use the standard apple function key translations
Linus Torvalds [Mon, 7 Nov 2011 02:34:03 +0000 (18:34 -0800)]
hid/apple: modern macbook airs use the standard apple function key translations

This removes the use of the special "macbookair_fn_keys" keyboard
translation table for the MacBookAir4,x models (ie the 2011 refresh).
They use the standard apple_fn_keys[] translation.  Apparently only the
old MacBook Air's need a different translation table.

This mirrors the change that commit da617c7cb915 ("HID: consolidate
MacbookAir 4,1 mappings") did for the WELLSPRING6A ones, but does it for
the WELLSPRING6 model used on the MacBookAir4,2.

Reported-and-tested-by: Dirk Hohndel <hohndel@infradead.org>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joshua V Dillon <jvdillon@gmail.com>
Cc: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'stable/vmalloc-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 7 Nov 2011 02:31:36 +0000 (18:31 -0800)]
Merge branch 'stable/vmalloc-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen

* 'stable/vmalloc-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  net: xen-netback: use API provided by xenbus module to map rings
  block: xen-blkback: use API provided by xenbus module to map rings
  xen: use generic functions instead of xen_{alloc, free}_vm_area()

13 years agocpuidle: Single/Global registration of idle states
Deepthi Dharwar [Fri, 28 Oct 2011 10:50:42 +0000 (16:20 +0530)]
cpuidle: Single/Global registration of idle states

This patch makes the cpuidle_states structure global (single copy)
instead of per-cpu. The statistics needed on per-cpu basis
by the governor are kept per-cpu. This simplifies the cpuidle
subsystem as state registration is done by single cpu only.
Having single copy of cpuidle_states saves memory. Rare case
of asymmetric C-states can be handled within the cpuidle driver
and architectures such as POWER do not have asymmetric C-states.

Having single/global registration of all the idle states,
dynamic C-state transitions on x86 are handled by
the boot cpu. Here, the boot cpu  would disable all the devices,
re-populate the states and later enable all the devices,
irrespective of the cpu that would receive the notification first.

Reference:
https://lkml.org/lkml/2011/4/25/83

Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
Tested-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Len Brown <len.brown@intel.com>
13 years agocpuidle: Split cpuidle_state structure and move per-cpu statistics fields
Deepthi Dharwar [Fri, 28 Oct 2011 10:50:33 +0000 (16:20 +0530)]
cpuidle: Split cpuidle_state structure and move per-cpu statistics fields

This is the first step towards global registration of cpuidle
states. The statistics used primarily by the governor are per-cpu
and have to be split from rest of the fields inside cpuidle_state,
which would be made global i.e. single copy. The driver_data field
is also per-cpu and moved.

Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
Tested-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Len Brown <len.brown@intel.com>
13 years agocpuidle: Remove CPUIDLE_FLAG_IGNORE and dev->prepare()
Deepthi Dharwar [Fri, 28 Oct 2011 10:50:24 +0000 (16:20 +0530)]
cpuidle: Remove CPUIDLE_FLAG_IGNORE and dev->prepare()

The cpuidle_device->prepare() mechanism causes updates to the
cpuidle_state[].flags, setting and clearing CPUIDLE_FLAG_IGNORE
to tell the governor not to chose a state on a per-cpu basis at
run-time. State demotion is now handled by the driver and it returns
the actual state entered. Hence, this mechanism is not required.
Also this removes per-cpu flags from cpuidle_state enabling
it to be made global.

Reference:
https://lkml.org/lkml/2011/3/25/52

Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
Tested-by: Jean Pihet <j-pihet@ti.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Len Brown <len.brown@intel.com>
13 years agocpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state
Deepthi Dharwar [Fri, 28 Oct 2011 10:50:09 +0000 (16:20 +0530)]
cpuidle: Move dev->last_residency update to driver enter routine; remove dev->last_state

Cpuidle governor only suggests the state to enter using the
governor->select() interface, but allows the low level driver to
override the recommended state. The actual entered state
may be different because of software or hardware demotion. Software
demotion is done by the back-end cpuidle driver and can be accounted
correctly. Current cpuidle code uses last_state field to capture the
actual state entered and based on that updates the statistics for the
state entered.

Ideally the driver enter routine should update the counters,
and it should return the state actually entered rather than the time
spent there. The generic cpuidle code should simply handle where
the counters live in the sysfs namespace, not updating the counters.

Reference:
https://lkml.org/lkml/2011/3/25/52

Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Trinabh Gupta <g.trinabh@gmail.com>
Tested-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Len Brown <len.brown@intel.com>
13 years agoACPI: Fix CONFIG_ACPI_DOCK=n compiler warning
Bart Van Assche [Wed, 2 Nov 2011 19:16:05 +0000 (20:16 +0100)]
ACPI: Fix CONFIG_ACPI_DOCK=n compiler warning

Recently the ACPI ops structs were constified but the inline version
of register_hotplug_dock_device() was overlooked (see also commit
9c8b04b, June 25 2011). Update the inline function
register_hotplug_dock_device() that is enabled with
CONFIG_ACPI_DOCK=n too. This patch fixes at least the following
compiler warnings:

drivers/ata/libata-acpi.c: In function .ata_acpi_associate.:
drivers/ata/libata-acpi.c:266:11: warning: passing argument 2 of .register_hotplug_dock_device. discards qualifiers from pointer target type
include/acpi/acpi_drivers.h:146:19: note: expected .struct acpi_dock_ops *. but argument is of type .const struct acpi_dock_ops *.
drivers/ata/libata-acpi.c:275:11: warning: passing argument 2 of .register_hotplug_dock_device. discards qualifiers from pointer target type
include/acpi/acpi_drivers.h:146:19: note: expected .struct acpi_dock_ops *. but argument is of type .const struct acpi_dock_ops *.

Cc: stable@vger.kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
13 years agoACPI: Export FADT pm_profile integer value to userspace
Thomas Renninger [Fri, 4 Nov 2011 02:33:46 +0000 (03:33 +0100)]
ACPI: Export FADT pm_profile integer value to userspace

There are a lot userspace approaches to detect the usage of the
platform (laptop, workstation, server, ...) and adjust kernel tunables
accordingly (io/process scheduler, power management, ...).

These approaches need constant maintaining and are ugly to implement
(detect PCMCIA controller -> laptop,
does not work on recent systems anymore, ...)
On ACPI systems there is an easy and reliable way (if implemented
in BIOS and most recent platforms have this value set).
-> export it to userspace.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>