GitHub/LineageOS/android_kernel_motorola_exynos9610.git
12 years agomtd: mtdconcat: return -EOPNOTSUPP if block_markbad is undefined
Artem Bityutskiy [Fri, 3 Feb 2012 09:03:28 +0000 (11:03 +0200)]
mtd: mtdconcat: return -EOPNOTSUPP if block_markbad is undefined

The main 'mtd_block_markbad()' function returns -EOPNOTSUPP if the
'->block_markbad' method is undefined, and mtdconcat should do the same.
Fix this by simply removing the 'mtd_can_have_bb()' because it is  not
really necessary. It could be treated as an optimization, but this function is
expected to be used so rarely that it does not matter.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: sst25l: initialize writebufsize
Artem Bityutskiy [Fri, 3 Feb 2012 08:16:50 +0000 (10:16 +0200)]
mtd: sst25l: initialize writebufsize

The writebufsize concept was introduce by commit
"0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents
the maximum amount of data the device writes to the media at a time. This is
an important parameter for UBIFS which is used during recovery and which
basically defines how big a corruption caused by a power cut can be.

Set writebufsize to the flash page size because it is the maximum amount of
data it writes at a time.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@kernel.org [2.6.38+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: spear_smi: initialize writebufsize
Artem Bityutskiy [Fri, 3 Feb 2012 08:14:12 +0000 (10:14 +0200)]
mtd: spear_smi: initialize writebufsize

The writebufsize concept was introduce by commit
"0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents
the maximum amount of data the device writes to the media at a time. This is
an important parameter for UBIFS which is used during recovery and which
basically defines how big a corruption caused by a power cut can be.

Set writebufsize to the flash page size because it is the maximum amount of
data it writes at a time.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: lart: initialize writebufsize
Artem Bityutskiy [Fri, 3 Feb 2012 07:53:28 +0000 (09:53 +0200)]
mtd: lart: initialize writebufsize

The writebufsize concept was introduce by commit
"0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents
the maximum amount of data the device writes to the media at a time. This is
an important parameter for UBIFS which is used during recovery and which
basically defines how big a corruption caused by a power cut can be.

Set writebufsize to 4 because this drivers writes at max 4 bytes at a time.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@kernel.org [2.6.38+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: docg3: initialize writebufsize
Artem Bityutskiy [Fri, 3 Feb 2012 07:44:32 +0000 (09:44 +0200)]
mtd: docg3: initialize writebufsize

The writebufsize concept was introduce by commit
"0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents
the maximum amount of data the device writes to the media at a time. This is
an important parameter for UBIFS which is used during recovery and which
basically defines how big a corruption caused by a power cut can be.

Set it to be equivalent to mtd->writesize because this is the maximum amount
of data the driver writes at a time.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: stable@kernel.org [3.2+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: doc2001plus: initialize writebufsize
Artem Bityutskiy [Fri, 3 Feb 2012 07:43:14 +0000 (09:43 +0200)]
mtd: doc2001plus: initialize writebufsize

The writebufsize concept was introduce by commit
"0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents
the maximum amount of data the device writes to the media at a time. This is
an important parameter for UBIFS which is used during recovery and which
basically defines how big a corruption caused by a power cut can be.

Set it to be equivalent to mtd->writesize because this is the maximum amount
of data the driver writes at a time.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@kernel.org [2.6.38+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: doc2001: initialize writebufsize
Artem Bityutskiy [Fri, 3 Feb 2012 07:42:39 +0000 (09:42 +0200)]
mtd: doc2001: initialize writebufsize

The writebufsize concept was introduce by commit
"0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents
the maximum amount of data the device writes to the media at a time. This is
an important parameter for UBIFS which is used during recovery and which
basically defines how big a corruption caused by a power cut can be.

Set it to be equivalent to mtd->writesize because this is the maximum amount
of data the driver writes at a time.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@kernel.org [2.6.38+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: doc2000: initialize writebufsize
Artem Bityutskiy [Fri, 3 Feb 2012 07:38:43 +0000 (09:38 +0200)]
mtd: doc2000: initialize writebufsize

The writebufsize concept was introduce by commit
"0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents
the maximum amount of data the device writes to the media at a time. This is
an important parameter for UBIFS which is used during recovery and which
basically defines how big a corruption caused by a power cut can be.

Set it to be equivalent to mtd->writesize because this is the maximum amount
of data the driver writes at a time.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@kernel.org [2.6.38+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: block2mtd: initialize writebufsize
Artem Bityutskiy [Fri, 3 Feb 2012 07:32:44 +0000 (09:32 +0200)]
mtd: block2mtd: initialize writebufsize

The writebufsize concept was introduce by commit
"0e4ca7e mtd: add writebufsize field to mtd_info struct" and it represents
the maximum amount of data the device writes to the media at a time. This is
an important parameter for UBIFS which is used during recovery and which
basically defines how big a corruption caused by a power cut can be.

However, we forgot to set this parameter for block2mtd. Set it to PAGE_SIZE
because this is actually the amount of data we write at a time.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Joern Engel <joern@lazybastard.org>
Cc: stable@kernel.org [2.6.38+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agojffs2: Remove unnecessary OOM messages
Joe Perches [Tue, 31 Jan 2012 22:42:08 +0000 (14:42 -0800)]
jffs2: Remove unnecessary OOM messages

Per call site OOM messages are unnecessary.
k.alloc and v.alloc failures use dump_stack().

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: docg4: fix printk() warnings
Dan Carpenter [Tue, 31 Jan 2012 08:54:06 +0000 (11:54 +0300)]
mtd: docg4: fix printk() warnings

Gcc complains here:
drivers/mtd/nand/docg4.c: In function ‘probe_docg4’:
drivers/mtd/nand/docg4.c:1277:4: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 3 has type ‘resource_size_t’ [-Wformat]
drivers/mtd/nand/docg4.c:1277:4: warning: format ‘%x’ expects argument of type ‘unsigned int’, but argument 4 has type ‘resource_size_t’ [-Wformat]

We have a standard way of printing these using a format string
extension.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: nand: gpmi: use correct member for checking NAND_BBT_USE_FLASH
Wolfram Sang [Tue, 31 Jan 2012 12:10:43 +0000 (13:10 +0100)]
mtd: nand: gpmi: use correct member for checking NAND_BBT_USE_FLASH

This has been moved from .options to .bbt_options meanwhile. So, it
currently checks for something totally different (NAND_OWN_BUFFERS) and
decides according to that.

Artem Bityutskiy: the options were moved in
a40f734 mtd: nand: consolidate redundant flash-based BBT flags

Artem Bityutskiy: CCing -stable

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Huang Shijie <b32955@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@kernel.org [3.2+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: m25p80: set writebufsize
Brian Norris [Tue, 31 Jan 2012 08:06:03 +0000 (00:06 -0800)]
mtd: m25p80: set writebufsize

Using UBI on m25p80 can give messages like:

    UBI error: io_init: bad write buffer size 0 for 1 min. I/O unit

We need to initialize writebufsize; I think "page_size" is the correct
"bufsize", although I'm not sure. Comments?

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: stable@kernel.org [2.6.38+]
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: mtdcore: remove unnecessary mtd->resume check
Brian Norris [Fri, 27 Jan 2012 20:39:32 +0000 (12:39 -0800)]
mtd: mtdcore: remove unnecessary mtd->resume check

We don't need to to check for mtd->resume before calling mtd_resume().
mtd_resume() should take care of that.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agojffs2: fix typo in scan.c
Masanari Iida [Fri, 27 Jan 2012 15:17:28 +0000 (00:17 +0900)]
jffs2: fix typo in scan.c

Correct spelling "scaning" to scanning" in
fs/jffs2/scan.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: add leading underscore to all mtd functions
Artem Bityutskiy [Mon, 30 Jan 2012 12:58:32 +0000 (14:58 +0200)]
mtd: add leading underscore to all mtd functions

This patch renames all MTD functions by adding a "_" prefix:

mtd->erase -> mtd->_erase
mtd->read_oob -> mtd->_read_oob
...

The reason is that we are re-working the MTD API and from now on it is
an error to use MTD function pointers directly - we have a corresponding
API call for every pointer. By adding a leading "_" we achieve the following:

1. Make sure we convert every direct pointer users
2. A leading "_" suggests that this interface is internal and it becomes
   less likely that people will use them directly
3. Make sure all the out-of-tree modules stop compiling and the owners
   spot the big API change and amend them.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agojffs2: update to new MTD interface
Brian Norris [Fri, 3 Feb 2012 00:21:09 +0000 (16:21 -0800)]
jffs2: update to new MTD interface

There were a few instances of the old MTD interface remaining for JFFS2. We
fix one error that shows up (only when CONFIG_JFFS2_FS_WRITEBUFFER is not
defined) like this:

  fs/jffs2/read.c: In function 'jffs2_read_dnode':
  fs/jffs2/read.c:36:8: error: 'struct mtd_info' has no member named 'read'
  fs/jffs2/read.c:112:8: error: 'struct mtd_info' has no member named 'read'
  ...

We also simply remove two macros that are not in use, were not updated to
the new MTD interface, and don't even utilize the old interface properly.
(That means they weren't used since commit 8593fbc6, year 2006; almost 6
years ago, for those who don't want to do the math)

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agoromfs: switch to new MTD API
Artem Bityutskiy [Mon, 30 Jan 2012 13:11:44 +0000 (15:11 +0200)]
romfs: switch to new MTD API

We have changed the MTD API and now ROMFS should use 'mtd_read()' instead
of mtd->read().

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agojffs2: remove direct mtd->point reference
Artem Bityutskiy [Mon, 30 Jan 2012 13:08:26 +0000 (15:08 +0200)]
jffs2: remove direct mtd->point reference

Commit 10934478e44d9a5a7b16dadd89094fb608cf101e did not remove now useless
"if (mtd->point)" check mistakingly - let's kill it now.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: nand: add support for diskonchip G4 nand flash device
Mike Dunn [Wed, 4 Jan 2012 00:05:44 +0000 (16:05 -0800)]
mtd: nand: add support for diskonchip G4 nand flash device

This patch adds a driver for the M-Sys / Sandisk diskonchip G4 nand flash found
in various smartphones and PDAs, among them the Palm Treo680, HTC Prophet and
Wizard, Toshiba Portege G900, Asus P526, and O2 XDA Zinc.  It was tested on the
Treo 680, but should work generically.

Since v3, this patch adds power management functions, a scan of the factory bad
block table during initialization, several fixes, and more extensive testing.
Also, the platform data header file, which only contained partitioning
information, was removed.  Command-line partitioning can be used, at least until
an mtd parser is written for the saftl format with which these chips are
shipped.

Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Reviewed-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: minor coding style cleanup in mtdpart.c
Stefan Roese [Wed, 25 Jan 2012 10:24:36 +0000 (11:24 +0100)]
mtd: minor coding style cleanup in mtdpart.c

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: convert drivers/mtd/* to use module_spi_driver()
Axel Lin [Fri, 27 Jan 2012 07:45:20 +0000 (15:45 +0800)]
mtd: convert drivers/mtd/* to use module_spi_driver()

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

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: nand: move SCANLASTPAGE handling to the correct code block
Brian Norris [Sat, 21 Jan 2012 04:38:03 +0000 (20:38 -0800)]
mtd: nand: move SCANLASTPAGE handling to the correct code block

As nand_default_block_markbad() is becoming more complex, it helps to
have code appear only in its relevant codepath(s). Here, the calculation
of `ofs' based on NAND_BBT_SCANLASTPAGE is only useful on paths where we
write bad block markers to OOB. We move the condition/calculation closer
to the `write' operation and update the comment to more correctly
describe the operation.

The variable `wr_ofs' is also used to help isolate our calculation of
the "write" offset from the usage of `ofs' to represent the eraseblock
offset. This will become useful when we reorder operations in the next
patch.

This patch should make no functional change.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: mtdoops: kill Kconfig usage instructions
Brian Norris [Fri, 20 Jan 2012 21:17:00 +0000 (13:17 -0800)]
mtd: mtdoops: kill Kconfig usage instructions

The mtdoops usage instructions found in Kconfig have been incorrect
since:

    commit 2e386e4bac90554887e73d6f342e845185b33fc3
    mtd: mtdoops: refactor as a kmsg_dumper

mtdoops no longer uses a console. Now, if you build it into your kernel,
you add something like the following to your command line to select
partition X as your logging partition:

    mtdoops.mtddev=X

Anyway, it seems better to leave the documentation out of Kconfig.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: sa11x0: remove definitions and code left for documentation purposes
Russell King - ARM Linux [Fri, 20 Jan 2012 10:42:36 +0000 (10:42 +0000)]
mtd: sa11x0: remove definitions and code left for documentation purposes

/*
 * This is here for documentation purposes only - until these people
 * submit their machine types.  It will be gone January 2005.
 */

It's now seven years after that date, so let's remove this.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: sa11x0: Remove shutdown handler
Russell King - ARM Linux [Fri, 20 Jan 2012 10:42:16 +0000 (10:42 +0000)]
mtd: sa11x0: Remove shutdown handler

Commit c4a9f88daf ([MTD] [NOR] fix ctrl-alt-del can't reboot for
intel flash bug) interferes with this work-around, causing MTD to
issue this warning:

Flash device refused suspend due to active operation (state 0)

The commit makes our work-around in the map driver unnecessary, so
let's remove it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: spear_smi: release memory region during remove
Shiraz Hashim [Fri, 20 Jan 2012 10:35:19 +0000 (11:35 +0100)]
mtd: spear_smi: release memory region during remove

Driver must cleanup all held resources during remove. It wasn't
releasing requested memory region.

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: ST SPEAr: Add SMI driver for serial NOR flash
Shiraz Hashim [Thu, 12 Jan 2012 13:38:57 +0000 (14:38 +0100)]
mtd: ST SPEAr: Add SMI driver for serial NOR flash

SPEAr platforms (spear3xx/spear6xx/spear13xx) provide SMI (Serial Memory
Interface) controller to access serial NOR flash. SMI provides a simple
interface for SPI/serial NOR flashes and has certain inbuilt commands
and features to support these flashes easily. It also makes it possible
to map an address range in order to directly access (read/write) the SNOR
over address bus. This patch intends to provide serial nor driver support
for spear platforms which are accessed through SMI.

Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: nand: correct comment on nand_chip badblockbits
Brian Norris [Sat, 14 Jan 2012 02:11:50 +0000 (18:11 -0800)]
mtd: nand: correct comment on nand_chip badblockbits

The description for badblockbits is incorrect. I think someone just made
up a false description on the spot to satisfy some kerneldoc warning.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: nand: differentiate 1- vs. 2-byte writes when marking bad blocks
Brian Norris [Sat, 14 Jan 2012 02:11:49 +0000 (18:11 -0800)]
mtd: nand: differentiate 1- vs. 2-byte writes when marking bad blocks

It seems that we have developed a bad-block-marking "feature" out of
pure laziness:

  "We write two bytes per location, so we dont have to mess with 16 bit
  access."

It's relatively simple to write a 1 byte at a time on x8 devices and 2
bytes at a time on x16 devices, so let's do it.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: nand: fix SCAN2NDPAGE check for BBM
Brian Norris [Sat, 14 Jan 2012 02:11:48 +0000 (18:11 -0800)]
mtd: nand: fix SCAN2NDPAGE check for BBM

nand_block_bad() doesn't check the correct pages when
NAND_BBT_SCAN2NDPAGE is enabled. It should scan both the OOB region of
both the 1st and 2nd page of each block.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: nand: erase block before marking bad
Brian Norris [Sat, 14 Jan 2012 02:11:47 +0000 (18:11 -0800)]
mtd: nand: erase block before marking bad

Many NAND flash systems (especially those with MLC NAND) cannot be
reliably written twice in a row. For instance, when marking a bad block,
the block may already have data written to it, and so we should attempt
to erase the block before writing a bad block marker to its OOB region.

We can ignore erase failures, since the block may be bad such that it
cannot be erased properly; we still attempt to write zeros to its spare
area.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: onenand: samsung: add missing iounmap
Julia Lawall [Thu, 12 Jan 2012 09:55:05 +0000 (10:55 +0100)]
mtd: onenand: samsung: add missing iounmap

Add missing iounmap in error handling code, in a case where the function
already preforms iounmap on some other execution path.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e;
statement S,S1;
int ret;
@@
e = \(ioremap\|ioremap_nocache\)(...)
... when != iounmap(e)
if (<+...e...+>) S
... when any
    when != iounmap(e)
*if (...)
   { ... when != iounmap(e)
     return ...; }
... when any
iounmap(e);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: mtdcore: Fix build warning when CONFIG_MTD_CHAR is not defined
Fabio Estevam [Thu, 12 Jan 2012 03:25:04 +0000 (01:25 -0200)]
mtd: mtdcore: Fix build warning when CONFIG_MTD_CHAR is not defined

Fix the following build warning:

drivers/mtd/mtdcore.c: In function ‘mtd_release’:
drivers/mtd/mtdcore.c:110: warning: unused variable ‘mtd’

This happens when neither CONFIG_MTD_CHAR nor CONFIG_MTD_CHAR_MODULE are defined.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: mtdblock: call mtd_sync() only if opened for write
Alexander Stein [Tue, 10 Jan 2012 12:26:58 +0000 (13:26 +0100)]
mtd: mtdblock: call mtd_sync() only if opened for write

Because it is useless to call it if the device is opened in R/O mode, and also
harmful: on CFI NOR flash it may block for long time waiting for erase
operations to complete is another partition with a R/W file-system on this
chip.

Artem Bityutskiy: write commit message, amend the patch to match the latest
tree (we use mtd_sync(), not mtd->sync() nowadays).

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: pmc551: fix signedness bug in init_pmc551()
Xi Wang [Mon, 9 Jan 2012 21:58:25 +0000 (16:58 -0500)]
mtd: pmc551: fix signedness bug in init_pmc551()

Since "length" is a u32, the error handling below didn't work when
fixup_pmc551() returns -ENODEV.

if ((length = fixup_pmc551(PCI_Device)) <= 0)

This patch changes both the type of "length" and the return type of
fixup_pmc551() to int.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agomtd: cfi: AMD/Fujitsu compatibles: add panic write support
Ira W. Snyder [Fri, 6 Jan 2012 19:29:19 +0000 (11:29 -0800)]
mtd: cfi: AMD/Fujitsu compatibles: add panic write support

This allows the mtdoops driver to work on flash chips using the
AMD/Fujitsu compatible command set.

As the code comments note, the locks used throughout the normal code
paths in the driver are ignored, so that the chance of writing out the
kernel's last messages are maximized.

Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
12 years agoLinux 3.3-rc6
Linus Torvalds [Sun, 4 Mar 2012 01:08:09 +0000 (17:08 -0800)]
Linux 3.3-rc6

12 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi...
Linus Torvalds [Sun, 4 Mar 2012 00:42:30 +0000 (16:42 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

SCSI fixes from James Bottomley:
 "There's just a single fix in here: the osd max device number fix."

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] osd_uld: Bump MAX_OSD_DEVICES from 64 to 1,048,576

12 years agoMerge tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6
Linus Torvalds [Sun, 4 Mar 2012 00:33:51 +0000 (16:33 -0800)]
Merge tag 'parisc-fixes' of git://git./linux/kernel/git/jejb/parisc-2.6

PARISC fixes from James Bottomley:
 "This is a set of build fixes to get the cross compiled architecture
  testbeds building again"

* tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6:
  [PARISC] don't unconditionally override CROSS_COMPILE for 64 bit.
  [PARISC] include <linux/prefetch.h> in drivers/parisc/iommu-helpers.h
  [PARISC] fix compile break caused by iomap: make IOPORT/PCI mapping functions conditional

12 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 3 Mar 2012 17:32:31 +0000 (09:32 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/kvm: Fix Host-Only/Guest-Only counting with SVM disabled

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Sat, 3 Mar 2012 17:31:49 +0000 (09:31 -0800)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

Pull from Herbert Xu:
  "This push fixes a bug in mv_cesa that causes all hash operations
   that supply data on a final operation to fail."

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: mv_cesa - fix final callback not ignoring input data

12 years agovfs: export full_name_hash() function to modules
Linus Torvalds [Sat, 3 Mar 2012 03:40:57 +0000 (19:40 -0800)]
vfs: export full_name_hash() function to modules

Commit 5707c87f "vfs: uninline full_name_hash()" broke the modular
build, because it needs exporting now that it isn't inlined any more.

Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Fri, 2 Mar 2012 23:21:48 +0000 (15:21 -0800)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

hhwmon fixes for 3.3-rc6 from Guenter Roeck:

These patches are necessary for correct operation and management of
F75387.

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (f75375s) Catch some attempts to write to r/o registers
  hwmon: (f75375s) Properly map the F75387 automatic modes to pwm_enable
  hwmon: (f75375s) Make pwm*_mode writable for the F75387
  hwmon: (f75375s) Fix writes to the pwm* attribute for the F75387

12 years agoMerge tag 'fbdev-fixes-for-3.3-2' of git://github.com/schandinat/linux-2.6
Linus Torvalds [Fri, 2 Mar 2012 23:21:15 +0000 (15:21 -0800)]
Merge tag 'fbdev-fixes-for-3.3-2' of git://github.com/schandinat/linux-2.6

fbdev fixes for 3.3 from Florian Tobias Schandinat

It includes:
 - two fixes for OMAP HDMI
 - one fix to make new OMAP functions behave as they are supposed to
 - one Kconfig dependency fix
 - two fixes for viafb for modesetting on VX900 hardware

* tag 'fbdev-fixes-for-3.3-2' of git://github.com/schandinat/linux-2.6:
  OMAPDSS: APPLY: make ovl_enable/disable synchronous
  OMAPDSS: panel-dvi: Add Kconfig dependency on I2C
  viafb: fix IGA1 modesetting on VX900
  viafb: select HW scaling on VX900 for IGA2
  OMAPDSS: HDMI: hot plug detect fix
  OMAPDSS: HACK: Ensure DSS clock domain gets out of idle when HDMI is enabled

12 years agoMerge tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 2 Mar 2012 23:20:41 +0000 (15:20 -0800)]
Merge tag 'sound-fixes' of git://git./linux/kernel/git/tiwai/sound

sound fixes for 3.3-rc6 from Takashi Iwai

This contains again regression fixes for various HD-audio and ASoC
regarding SSI and dapm shutdown path.  In addition, a minor azt3328
fix and the correction of the new jack-notification strings in HD-audio.

* tag 'sound-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Kill hyphenated names
  ALSA: hda - Add a fake mute feature
  ALSA: hda - Always set HP pin in unsol handler for STAC/IDT codecs
  ALSA: azt3328 - Fix NULL ptr dereference on cards without OPL3
  ALSA: hda/realtek - Fix resume of multiple input sources
  ASoC: i.MX SSI: Fix DSP_A format.
  ASoC: dapm: Check for bias level when powering down

12 years agovfs: split up name hashing in link_path_walk() into helper function
Linus Torvalds [Fri, 2 Mar 2012 22:49:24 +0000 (14:49 -0800)]
vfs: split up name hashing in link_path_walk() into helper function

The code in link_path_walk() that finds out the length and the hash of
the next path component is some of the hottest code in the kernel.  And
I have a version of it that does things at the full width of the CPU
wordsize at a time, but that means that we *really* want to split it up
into a separate helper function.

So this re-organizes the code a bit and splits the hashing part into a
helper function called "hash_name()".  It returns the length of the
pathname component, while at the same time computing and writing the
hash to the appropriate location.

The code generation is slightly changed by this patch, but generally for
the better - and the added abstraction actually makes the code easier to
read too.  And the new interface is well suited for replacing just the
"hash_name()" function with alternative implementations.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agovfs: clarify and clean up dentry_cmp()
Linus Torvalds [Fri, 2 Mar 2012 22:47:15 +0000 (14:47 -0800)]
vfs: clarify and clean up dentry_cmp()

It did some odd things for unclear reasons.  As this is one of the
functions that gets changed when doing word-at-a-time compares, this is
yet another of the "don't change any semantics, but clean things up so
that subsequent patches don't get obscured by the cleanups".

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agovfs: uninline full_name_hash()
Linus Torvalds [Fri, 2 Mar 2012 22:32:59 +0000 (14:32 -0800)]
vfs: uninline full_name_hash()

.. and also use it in lookup_one_len() rather than open-coding it.

There aren't any performance-critical users, so inlining it is silly.
But it wouldn't matter if it wasn't for the fact that the word-at-a-time
dentry name patches want to conditionally replace the function, and
uninlining it sets the stage for that.

So again, this is a preparatory patch that doesn't change any semantics,
and only prepares for a much cleaner and testable word-at-a-time dentry
name accessor patch.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agovfs: trivial __d_lookup_rcu() cleanups
Linus Torvalds [Fri, 2 Mar 2012 22:23:30 +0000 (14:23 -0800)]
vfs: trivial __d_lookup_rcu() cleanups

These don't change any semantics, but they clean up the code a bit and
mark some arguments appropriately 'const'.

They came up as I was doing the word-at-a-time dcache name accessor
code, and cleaning this up now allows me to send out a smaller relevant
interesting patch for the experimental stuff.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agohwmon: (f75375s) Catch some attempts to write to r/o registers
Nikolaus Schulz [Tue, 28 Feb 2012 21:15:54 +0000 (16:15 -0500)]
hwmon: (f75375s) Catch some attempts to write to r/o registers

It makes no sense to attempt to manually configure the fan in auto mode,
or set the duty cycle directly in closed loop mode.  The corresponding
registers are then read-only.  If the user tries it nonetheless, error out
with EINVAL instead of silently doing nothing.

Signed-off-by: Nikolaus Schulz <mail@microschulz.de>
[guenter.roeck@ericsson.com: Minor formatting cleanup]
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
12 years agohwmon: (f75375s) Properly map the F75387 automatic modes to pwm_enable
Nikolaus Schulz [Tue, 28 Feb 2012 21:15:53 +0000 (16:15 -0500)]
hwmon: (f75375s) Properly map the F75387 automatic modes to pwm_enable

The F75387 supports automatic fan control using either PWM duty cycle or
RPM speed values.  Make the driver detect the latter mode, and expose the
different modes in sysfs as per pwm_enable, so that the user can switch
between them.

The interpretation of the pwm_enable attribute for the F75387 is adjusted
to be a superset of those values used for similar Fintek chips which do
not support automatic duty mode, with 2 mapping to automatic speed mode,
and moving automatic duty mode to the new value 4.

Toggling the duty mode via pwm_enable is currently denied for the F75387,
as the chip then simply reinterprets the fan configuration register values
according to the new mode, switching between RPM and PWM units, which
makes this a dangerous operation.

This patch introduces a new pwm mode into the driver. This is necessary
because the new mode (automatic pwm mode, 4) may already be enabled by the
BIOS, and the driver should not break existing functionality. This was seen
on at least one board.

Signed-off-by: Nikolaus Schulz <mail@microschulz.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
12 years agoMerge branches 'core-urgent-for-linus', 'perf-urgent-for-linus' and 'sched-urgent...
Linus Torvalds [Fri, 2 Mar 2012 19:38:43 +0000 (11:38 -0800)]
Merge branches 'core-urgent-for-linus', 'perf-urgent-for-linus' and 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pulling latest branches from Ingo:

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  memblock: Fix size aligning of memblock_alloc_base_nid()

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf probe: Ensure offset provided is not greater than function length without DWARF info too
  perf tools: Ensure comm string is properly terminated
  perf probe: Ensure offset provided is not greater than function length
  perf evlist: Return first evsel for non-sample event on old kernel
  perf/hwbp: Fix a possible memory leak

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  CPU hotplug, cpusets, suspend: Don't touch cpusets during suspend/resume

12 years agoregset: Return -EFAULT, not -EIO, on host-side memory fault
H. Peter Anvin [Fri, 2 Mar 2012 18:43:49 +0000 (10:43 -0800)]
regset: Return -EFAULT, not -EIO, on host-side memory fault

There is only one error code to return for a bad user-space buffer
pointer passed to a system call in the same address space as the
system call is executed, and that is EFAULT.  Furthermore, the
low-level access routines, which catch most of the faults, return
EFAULT already.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roland McGrath <roland@hack.frob.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoregset: Prevent null pointer reference on readonly regsets
H. Peter Anvin [Fri, 2 Mar 2012 18:43:48 +0000 (10:43 -0800)]
regset: Prevent null pointer reference on readonly regsets

The regset common infrastructure assumed that regsets would always
have .get and .set methods, but not necessarily .active methods.
Unfortunately people have since written regsets without .set methods.

Rather than putting in stub functions everywhere, handle regsets with
null .get or .set methods explicitly.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roland McGrath <roland@hack.frob.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoperf/x86/kvm: Fix Host-Only/Guest-Only counting with SVM disabled
Joerg Roedel [Wed, 29 Feb 2012 13:57:32 +0000 (14:57 +0100)]
perf/x86/kvm: Fix Host-Only/Guest-Only counting with SVM disabled

It turned out that a performance counter on AMD does not
count at all when the GO or HO bit is set in the control
register and SVM is disabled in EFER.

This patch works around this issue by masking out the HO bit
in the performance counter control register when SVM is not
enabled.

The GO bit is not touched because it is only set when the
user wants to count in guest-mode only. So when SVM is
disabled the counter should not run at all and the
not-counting is the intended behaviour.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Avi Kivity <avi@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Gleb Natapov <gleb@redhat.com>
Cc: Robert Richter <robert.richter@amd.com>
Cc: stable@vger.kernel.org # v3.2
Link: http://lkml.kernel.org/r/1330523852-19566-1-git-send-email-joerg.roedel@amd.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
12 years agoALSA: hda - Kill hyphenated names
Takashi Iwai [Thu, 1 Mar 2012 17:14:41 +0000 (18:14 +0100)]
ALSA: hda - Kill hyphenated names

Kill hyphens from "Line-Out" name strings, as suggested by Mark Brown.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoMerge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Fri, 2 Mar 2012 07:40:45 +0000 (08:40 +0100)]
Merge tag 'perf-urgent-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/urgent

Various smaller perf/urgent fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
12 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Fri, 2 Mar 2012 02:27:43 +0000 (18:27 -0800)]
Merge git://www.linux-watchdog.org/linux-watchdog

Watchdog updates from Wim Van Sebroeck:

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: fix GETTIMEOUT ioctl in booke_wdt
  watchdog: update maintainers git entry
  watchdog: Fix typo in pnx4008_wdt.c
  watchdog: Fix typo in Kconfig
  watchdog: fix error in probe() of s3c2410_wdt (reset at booting)
  watchdog: hpwdt: clean up set_memory_x call for 32 bit

12 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Linus Torvalds [Fri, 2 Mar 2012 02:26:48 +0000 (18:26 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/broonie/regulator

Pull from Mark Brown:
 "A simple, driver specific fix.  This device isn't widely used outside
  of Marvell reference boards most of which are probably used with their
  BSPs rather than with mainline so low risk."

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: fix the ldo configure according to 88pm860x spec

12 years agoMerge branch 'i2c-embedded/for-3.3' of git://git.pengutronix.de/git/wsa/linux-2.6
Linus Torvalds [Fri, 2 Mar 2012 02:24:52 +0000 (18:24 -0800)]
Merge branch 'i2c-embedded/for-3.3' of git://git.pengutronix.de/git/wsa/linux-2.6

i2c bugfix from Wolfram Sang:
  "This patch fixes a wrong assumption in the mxs-i2c-driver about a
   command queue being done.  Without it, we have seen races when the
   bus was under load."

* 'i2c-embedded/for-3.3' of git://git.pengutronix.de/git/wsa/linux-2.6:
  i2c: mxs: only flag completion when queue is completely done

12 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 2 Mar 2012 02:23:43 +0000 (18:23 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

DRM fixes from Dave Airlie:
  intel: fixes for output regression on 965GM, an oops and a machine
  hang

  radeon: uninitialised var (that gcc didn't warn about for some reason)
  + a couple of correctness fixes.

  exynos: fixes for various things, drop some chunks of unused code.

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon/kms/vm: fix possible bug in radeon_vm_bo_rmv()
  drm/radeon: fix uninitialized variable
  drm/radeon/kms: fix radeon_dp_get_modes for LVDS bridges (v2)
  drm/i915: Remove use of the autoreported ringbuffer HEAD position
  drm/i915: Prevent a machine hang by checking crtc->active before loading lut
  drm/i915: fix operator precedence when enabling RC6p
  drm/i915: fix a sprite watermark computation to avoid divide by zero if xpos<0
  drm/i915: fix mode set on load pipe. (v2)
  drm/exynos: exynos_drm.h header file fixes
  drm/exynos: added panel physical size.
  drm/exynos: added postclose to release resource.
  drm/exynos: removed exynos_drm_fbdev_recreate function.
  drm/exynos: fixed page flip issue.
  drm/exynos: added possible_clones setup function.
  drm/exynos: removed pageflip_event_list init code when closed.
  drm/exynos: changed priority of mixer layers.
  drm/exynos: Fix typo in exynos_mixer.c

12 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Linus Torvalds [Fri, 2 Mar 2012 02:22:55 +0000 (18:22 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux

Pull s390 fixes from Martin Schwidefsky

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  [S390] memory hotplug: prevent memory zone interleave
  [S390] crash_dump: remove duplicate include
  [S390] KEYS: Enable the compat keyctl wrapper on s390x

12 years agoMerge tag 'asoc-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound...
Takashi Iwai [Thu, 1 Mar 2012 13:17:07 +0000 (14:17 +0100)]
Merge tag 'asoc-3.3' of git://git./linux/kernel/git/broonie/sound into for-linus

A small fix for the SSI driver and a fix for system shutdown with modern
devices.  Most of the modern devices will never get shut down normally
with a visible kernel log as the systems they're in tend not to shut
down often and when they do it's usually in form factors that don't have
a user visible console.

12 years agomemblock: Fix size aligning of memblock_alloc_base_nid()
Tejun Heo [Tue, 28 Feb 2012 20:56:21 +0000 (05:56 +0900)]
memblock: Fix size aligning of memblock_alloc_base_nid()

memblock allocator aligns @size to @align to reduce the amount
of fragmentation.  Commit:

 7bd0b0f0da ("memblock: Reimplement memblock allocation using reverse free area iterator")

Broke it by incorrectly relocating @size aligning to
memblock_find_in_range_node().  As the aligned size is not
propagated back to memblock_alloc_base_nid(), the actually
reserved size isn't aligned.

While this increases memory use for memblock reserved array,
this shouldn't cause any critical failure; however, it seems
that the size aligning was hiding a use-beyond-allocation bug in
sparc64 and losing the aligning causes boot failure.

The underlying problem is currently being debugged but this is a
proper fix in itself, it's already pretty late in -rc cycle for
boot failures and reverting the change for debugging isn't
difficult. Restore the size aligning moving it to
memblock_alloc_base_nid().

Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20120228205621.GC3252@dhcp-172-17-108-109.mtv.corp.google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <alpine.SOC.1.00.1202130942030.1488@math.ut.ee>

12 years agoMerge tag 'for-linus' of git://github.com/rustyrussell/linux
Linus Torvalds [Wed, 29 Feb 2012 23:14:33 +0000 (15:14 -0800)]
Merge tag 'for-linus' of git://github.com/rustyrussell/linux

Merge virtio pull request from Rusty Russell.

* tag 'for-linus' of git://github.com/rustyrussell/linux:
  virtio: balloon: leak / fill balloon across S4

12 years agovirtio: balloon: leak / fill balloon across S4
Amit Shah [Wed, 29 Feb 2012 12:12:51 +0000 (17:42 +0530)]
virtio: balloon: leak / fill balloon across S4

commit e562966dbaf49e7804097cd991e5d3a8934fc148 added support for S4 to
the balloon driver.  The freeze function did nothing to free the pages,
since reclaiming the pages from the host to immediately give them back
(if S4 was successful) seemed wasteful.  Also, if S4 wasn't successful,
the guest would have to re-fill the balloon.  On restore, the pages were
supposed to be marked freed and the free page counters were incremented
to reflect the balloon was totally deflated.

However, this wasn't done right.  The pages that were earlier taken away
from the guest during a balloon inflation operation were just shown as
used pages after a successful restore from S4.  Just a fancy way of
leaking lots of memory.

Instead of trying that, just leak the balloon on freeze and fill it on
restore/thaw paths.  This works properly now.  The optimisation to not
leak can be added later on after a bit of refactoring of the code.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
12 years agoOMAPDSS: APPLY: make ovl_enable/disable synchronous
Tomi Valkeinen [Wed, 29 Feb 2012 08:48:22 +0000 (10:48 +0200)]
OMAPDSS: APPLY: make ovl_enable/disable synchronous

ovl->enable/disable are meant to be synchronous so that they can handle
the configuration of fifo sizes. The current kernel doesn't configure
fifo sizes yet, and so the code doesn't need to block to function (from
omapdss driver's perspective).

However, for the users of omapdss a non-blocking ovl->disable is
confusing, because they don't know when the memory area is not used
any more.

Furthermore, when the fifo size configuration is added in the next merge
window, the change from non-blocking to blocking could cause side
effects to the users of omapdss. So by making the functions block
already will keep them behaving in the same manner.

And, while not the main purpose of this patch, this will also remove the
compile warning:

drivers/video/omap2/dss/apply.c:350: warning:
'wait_pending_extra_info_updates' defined but not used

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
12 years agoOMAPDSS: panel-dvi: Add Kconfig dependency on I2C
Tomi Valkeinen [Wed, 29 Feb 2012 08:48:21 +0000 (10:48 +0200)]
OMAPDSS: panel-dvi: Add Kconfig dependency on I2C

panel-dvi uses i2c, but the Kconfig didn't have dependency on I2C. Add
it.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
12 years agoperf probe: Ensure offset provided is not greater than function length without DWARF...
Prashanth Nageshappa [Tue, 28 Feb 2012 04:13:01 +0000 (09:43 +0530)]
perf probe: Ensure offset provided is not greater than function length without DWARF info too

The 'perf probe' command allows kprobe to be inserted at any offset from
a function start, which results in adding kprobes to unintended
location.  (example: perf probe do_fork+10000 is allowed even though
size of do_fork is ~904).

My previous patch https://lkml.org/lkml/2012/2/24/42 addressed the case
where DWARF info was available for the kernel. This patch fixes the
case where perf probe is used on a kernel without debuginfo available.

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/4F4C544D.1010909@linux.vnet.ibm.com
Signed-off-by: Prashanth Nageshappa <prashanth@linux.vnet.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agoperf tools: Ensure comm string is properly terminated
David Ahern [Fri, 24 Feb 2012 19:31:38 +0000 (12:31 -0700)]
perf tools: Ensure comm string is properly terminated

If threads in a multi-threaded process have names shorter than the main
thread the comm for the named threads is not properly terminated.

E.g., for the process 'namedthreads' where each thread is named noploop%d
where %d is the thread number:

Before:
    perf script -f comm,tid,ip,sym,dso
    noploop:4ads 21616  400a49 noploop (/tmp/namedthreads)
The 'ads' in the thread comm bleeds over from the process name.

After:
    perf script -f comm,tid,ip,sym,dso
       noploop:4 21616  400a49 noploop (/tmp/namedthreads)

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1330111898-68071-1-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agoperf probe: Ensure offset provided is not greater than function length
Prashanth Nageshappa [Fri, 24 Feb 2012 07:41:39 +0000 (13:11 +0530)]
perf probe: Ensure offset provided is not greater than function length

The perf probe command allows kprobe to be inserted at any offset from a
function start, which results in adding kprobes to unintended location.

Example: perf probe do_fork+10000 is allowed even though size of do_fork
is ~904.

This patch will ensure probe addition fails when the offset specified is
greater than size of the function.

Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Link: http://lkml.kernel.org/r/4F473F33.4060409@linux.vnet.ibm.com
Signed-off-by: Prashanth Nageshappa <prashanth@linux.vnet.ibm.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agoperf evlist: Return first evsel for non-sample event on old kernel
Namhyung Kim [Mon, 20 Feb 2012 01:47:26 +0000 (10:47 +0900)]
perf evlist: Return first evsel for non-sample event on old kernel

On old kernels that don't support sample_id_all feature,
perf_evlist__id2evsel() returns NULL for non-sampling events.

This breaks perf top when multiple events are given on command line. Fix
it by using first evsel in the evlist. This will also prevent getting
the same (potential) problem in such new tool/ old kernel combo.

Suggested-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1329702447-25045-1-git-send-email-namhyung.kim@lge.com
Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agoMerge tag 'fixes-3.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Wed, 29 Feb 2012 19:24:39 +0000 (11:24 -0800)]
Merge tag 'fixes-3.3-rc6' of git://git./linux/kernel/git/arm/arm-soc

Arnd Bergmann says:
 "Another set of arm-soc bug fixes on top of v3.3-rc5.  The few larger
  bits are all for devices that still need to get set up in board code.

  Only three platforms are in this set of fixes: omap2+, pxa and lpc32xx."

* tag 'fixes-3.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (22 commits)
  ARM: LPC32xx: serial.c: Fixed loop limit
  ARM: LPC32xx: serial.c: HW bug workaround
  ARM: LPC32xx: irq.c: Clear latched event
  ARM: LPC32xx: Fix interrupt controller init
  ARM: LPC32xx: Fix irq on GPI_28
  ARM: OMAP2: fix mailbox init code
  ARM: OMAP2+: gpmc-smsc911x: add required smsc911x regulators
  ARM: OMAP1: Fix out-of-bounds array access for Innovator
  OMAP3 EVM: remove out-of-bounds array access of gpio_leds
  ARM: OMAP: Fix build error when mmc_omap is built as module
  ARM: OMAP: Fix kernel panic with HSMMC when twl4030_gpio is a module
  pxa/hx4700: add platform device and I2C info for AK4641 codec
  arch/arm/mach-pxa/: included linux/gpio.h twice
  arch/arm/mach-mmp/: some files include some headers twice
  ARM: pxa: fix error handling in pxa2xx_drv_pcmcia_probe
  ARM: pxa: fix including linux/gpio.h twice
  ARM: pxa: fix mixed declarations and code in sharpsl_pm
  ARM: pxa: fix wrong parsing gpio event on spitz
  ARM: OMAP2+: usb-host: fix compile warning
  ARM: OMAP4: Move the barrier memboclk_steal() as part of reserve callback
  ...

12 years agoMerge tag 'for-3.3' of git://openrisc.net/jonas/linux
Linus Torvalds [Wed, 29 Feb 2012 18:23:45 +0000 (10:23 -0800)]
Merge tag 'for-3.3' of git://openrisc.net/jonas/linux

Build fixes for 3.3 from Jonas Bonn

* tag 'for-3.3' of git://openrisc.net/jonas/linux:
  openrisc: Fix up audit_syscall_[entry|exit]() usage
  openrisc: include export.h for EXPORT_SYMBOL

12 years agodrm/radeon/kms/vm: fix possible bug in radeon_vm_bo_rmv()
Sebastian Biemueller [Wed, 29 Feb 2012 16:04:52 +0000 (11:04 -0500)]
drm/radeon/kms/vm: fix possible bug in radeon_vm_bo_rmv()

The bo is removed from the list at the top of
radeon_vm_bo_rmv(), but then the list is used
in radeon_vm_bo_update_pte() to look up the vm.
remove the bo_list entry at the end of the
function instead.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jerome Glisse <j.glisse@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agoALSA: hda - Add a fake mute feature
Takashi Iwai [Mon, 27 Feb 2012 14:00:58 +0000 (15:00 +0100)]
ALSA: hda - Add a fake mute feature

Some codecs don't supply the mute amp-capabilities although the lowest
volume gives the mute.  It'd be handy if the parser provides the mute
mixers in such a case.

This patch adds an extension amp-cap bit (which is used only in the
driver) to represent the min volume = mute state.  Also modified the
amp cache code to support the fake mute feature when this bit is set
but the real mute bit is unset.

In addition, conexant cx5051 parser uses this new feature to implement
the missing mute controls.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42825

Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agodrm/radeon: fix uninitialized variable
Christian König [Tue, 28 Feb 2012 22:19:20 +0000 (23:19 +0100)]
drm/radeon: fix uninitialized variable

Without this fix the driver randomly treats
textures as arrays and I'm really wondering
why gcc isn't complaining about it.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agoMerge branch 'exynos-drm-fixes' of git://git.infradead.org/users/kmpark/linux-2.6...
Dave Airlie [Wed, 29 Feb 2012 09:54:24 +0000 (09:54 +0000)]
Merge branch 'exynos-drm-fixes' of git://git.infradead.org/users/kmpark/linux-2.6-samsung into HEAD

* 'exynos-drm-fixes' of git://git.infradead.org/users/kmpark/linux-2.6-samsung:
  drm/exynos: exynos_drm.h header file fixes
  drm/exynos: added panel physical size.
  drm/exynos: added postclose to release resource.
  drm/exynos: removed exynos_drm_fbdev_recreate function.
  drm/exynos: fixed page flip issue.
  drm/exynos: added possible_clones setup function.
  drm/exynos: removed pageflip_event_list init code when closed.
  drm/exynos: changed priority of mixer layers.
  drm/exynos: Fix typo in exynos_mixer.c

12 years agodrm/radeon/kms: fix radeon_dp_get_modes for LVDS bridges (v2)
Alex Deucher [Tue, 28 Feb 2012 16:08:22 +0000 (11:08 -0500)]
drm/radeon/kms: fix radeon_dp_get_modes for LVDS bridges (v2)

Need to call ExternalEncoderControl to set up DDC before
trying to get an EDID for all DP bridge chips (including
DP to LVDS).

Also remove redundant encoder assignment.

V2: fix typo in commit message.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agowatchdog: fix GETTIMEOUT ioctl in booke_wdt
Dmitry Artamonow [Thu, 26 Jan 2012 19:24:30 +0000 (23:24 +0400)]
watchdog: fix GETTIMEOUT ioctl in booke_wdt

Commit dcfb748422 ([WATCHDOG] fix book E watchdog to take
WDIOC_SETTIMEOUT arg in seconds) fixed SETTIMEOUT ioctl
to use seconds as a parameter instead of some hardware-specific
"period", but missed to apply similar changes to GETTIMEOUT,
so it still returns "period" value. Let's fix it!
Also, while at it, make SETTIMEOUT ioctl return real timeout
value as it should do according to the documentation.

Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
12 years agoALSA: hda - Always set HP pin in unsol handler for STAC/IDT codecs
Takashi Iwai [Wed, 29 Feb 2012 08:41:17 +0000 (09:41 +0100)]
ALSA: hda - Always set HP pin in unsol handler for STAC/IDT codecs

A bug report with an old Sony laptop showed that we can't rely on BIOS
setting the pins of headphones but the driver should set always by
itself.

Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoecryptfs: fix printk format warning for size_t
Randy Dunlap [Wed, 29 Feb 2012 00:31:12 +0000 (16:31 -0800)]
ecryptfs: fix printk format warning for size_t

Fix printk format warning (from Linus's suggestion):

on i386:
  fs/ecryptfs/miscdev.c:433:38: warning: format '%lu' expects type 'long unsigned int', but argument 4 has type 'unsigned int'

and on x86_64:
  fs/ecryptfs/miscdev.c:433:38: warning: format '%u' expects type 'unsigned int', but argument 4 has type 'long unsigned int'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Tyler Hicks <tyhicks@canonical.com>
Cc: Dustin Kirkland <dustin.kirkland@gazzang.com>
Cc: ecryptfs@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agohwmon: (f75375s) Make pwm*_mode writable for the F75387
Nikolaus Schulz [Tue, 28 Feb 2012 21:15:52 +0000 (22:15 +0100)]
hwmon: (f75375s) Make pwm*_mode writable for the F75387

Signed-off-by: Nikolaus Schulz <mail@microschulz.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
12 years agohwmon: (f75375s) Fix writes to the pwm* attribute for the F75387
Nikolaus Schulz [Tue, 28 Feb 2012 21:15:51 +0000 (22:15 +0100)]
hwmon: (f75375s) Fix writes to the pwm* attribute for the F75387

For the F75387, the register holding the current PWM duty cycle value is
r/o; changing it requires writing to the fan expect register instead.

Signed-off-by: Nikolaus Schulz <mail@microschulz.de>
[guenter.roeck@ericsson.com: Simplified function parameters]
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes
Linus Torvalds [Tue, 28 Feb 2012 17:17:31 +0000 (09:17 -0800)]
Merge git://git./linux/kernel/git/steve/gfs2-3.0-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes:
  GFS2: Read resource groups on mount
  GFS2: Ensure rindex is uptodate for fallocate
  GFS2: Read in rindex if necessary during unlink
  GFS2: Fix race between lru_list and glock ref count

12 years agoMerge tag 'iommu-fixes-v3.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 28 Feb 2012 17:15:31 +0000 (09:15 -0800)]
Merge tag 'iommu-fixes-v3.3-rc5' of git://git./linux/kernel/git/joro/iommu

IOMMU fixes for Linux 3.3-rc5

All the fixes are for the OMAP IOMMU driver. The first patch is the
biggest one. It fixes the calls of the function omap_find_iovm_area() in
the omap-iommu-debug module which expects a 'struct device' parameter
since commit fabdbca instead of an omap_iommu handle. The
omap-iommu-debug code still passed the handle to the function which
caused a crash.

The second patch fixes a NULL pointer dereference in the OMAP code and
the third patch makes sure that the omap-iommu is initialized before the
omap-isp driver, which relies on the iommu. The last patch is only a
workaround until defered probing is implemented.

* tag 'iommu-fixes-v3.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  ARM: OMAP: make iommu subsys_initcall to fix builtin omap3isp
  iommu/omap: fix NULL pointer dereference
  iommu/omap: fix erroneous omap-iommu-debug API calls

12 years agowatchdog: update maintainers git entry
Wim Van Sebroeck [Tue, 28 Feb 2012 16:11:05 +0000 (17:11 +0100)]
watchdog: update maintainers git entry

The git repository for watchdog device drivers moved.

Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
12 years agowatchdog: Fix typo in pnx4008_wdt.c
Masanari Iida [Fri, 10 Feb 2012 15:40:56 +0000 (00:40 +0900)]
watchdog: Fix typo in pnx4008_wdt.c

Correct spelling "resouce" to "resource" in
drivers/watchdog/pnx4008_wdt.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
12 years agowatchdog: Fix typo in Kconfig
Masanari Iida [Fri, 10 Feb 2012 15:42:16 +0000 (00:42 +0900)]
watchdog: Fix typo in Kconfig

Correct spelling "overidden" to "overridden" in
drivers/watchdog/Kconfig

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
12 years agowatchdog: fix error in probe() of s3c2410_wdt (reset at booting)
MyungJoo Ham [Fri, 13 Jan 2012 05:14:23 +0000 (14:14 +0900)]
watchdog: fix error in probe() of s3c2410_wdt (reset at booting)

Probe function of s3c2410 watchdog calls request_irq before initializing
required value (wdt_count). This incurs resetting watchdog counter value
and watchdog-reboot during booting up.

This patch addresses such an issue by calling request_irq later.

Error handling in probe function and calling oder in remove function are
also revised accordingly.

Reported-by: Chanwoo Park <cw00.choi@samsung.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
12 years agowatchdog: hpwdt: clean up set_memory_x call for 32 bit
Maxim Uvarov [Mon, 16 Jan 2012 04:02:50 +0000 (20:02 -0800)]
watchdog: hpwdt: clean up set_memory_x call for 32 bit

1. address has to be page aligned.
2. set_memory_x uses page size argument, not size.
Bug causes with following commit:
commit da28179b4e90dda56912ee825c7eaa62fc103797
Author: Mingarelli, Thomas <Thomas.Mingarelli@hp.com>
Date:   Mon Nov 7 10:59:00 2011 +0100

     watchdog: hpwdt: Changes to handle NX secure bit in 32bit path

    commit e67d668e147c3b4fec638c9e0ace04319f5ceccd upstream.

    This patch makes use of the set_memory_x() kernel API in order
    to make necessary BIOS calls to source NMIs.

Signed-off-by: Maxim Uvarov <maxim.uvarov@oracle.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Cc: stable <stable@vger.kernel.org>
12 years ago[PARISC] don't unconditionally override CROSS_COMPILE for 64 bit.
James Bottomley [Mon, 27 Feb 2012 21:41:05 +0000 (21:41 +0000)]
[PARISC] don't unconditionally override CROSS_COMPILE for 64 bit.

The user may wish to set their own value (for real cross compiles).  Since the
top level Makefile initialises CROSS_COMPILE to empty by default, we must
check it for being empty (rather than for being defined) before we override.

Reported-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
12 years agoGFS2: Read resource groups on mount
Steven Whitehouse [Fri, 24 Feb 2012 15:09:14 +0000 (15:09 +0000)]
GFS2: Read resource groups on mount

This makes mount take slightly longer, but at the same time, the first
write to the filesystem will be faster too. It also means that if there
is a problem in the resource index, then we can refuse to mount rather
than having to try and report that when the first write occurs.

In addition, to avoid recursive locking, we hvae to take account of
instances when the rindex glock may already be held when we are
trying to update the rbtree of resource groups.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
12 years agoGFS2: Ensure rindex is uptodate for fallocate
Bob Peterson [Fri, 17 Feb 2012 14:15:52 +0000 (09:15 -0500)]
GFS2: Ensure rindex is uptodate for fallocate

This patch fixes a problem whereby gfs2_grow was failing and causing GFS2
to assert. The problem was that when GFS2's fallocate operation tried to
acquire an "allocation" it made sure the rindex was up to date, and if not,
it called gfs2_rindex_update. However, if the file being fallocated was
the rindex itself, it was already locked at that point. By calling
gfs2_rindex_update at an earlier point in time, we bring rindex up to date
and thereby avoid trying to lock it when the "allocation" is acquired.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
12 years agoGFS2: Read in rindex if necessary during unlink
Bob Peterson [Thu, 16 Feb 2012 16:31:04 +0000 (11:31 -0500)]
GFS2: Read in rindex if necessary during unlink

This patch fixes a problem whereby you were unable to delete
files until other file system operations were done (such as
statfs, touch, writes, etc.) that caused the rindex to be
read in.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
12 years agoGFS2: Fix race between lru_list and glock ref count
Steven Whitehouse [Mon, 16 Jan 2012 15:46:21 +0000 (15:46 +0000)]
GFS2: Fix race between lru_list and glock ref count

This patch fixes a narrow race window between the glock ref count
hitting zero and glocks being removed from the lru_list.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
12 years agoperf/hwbp: Fix a possible memory leak
Namhyung Kim [Tue, 28 Feb 2012 01:19:38 +0000 (10:19 +0900)]
perf/hwbp: Fix a possible memory leak

If kzalloc() for TYPE_DATA failed on a given cpu, previous chunk
of TYPE_INST will be leaked. Fix it.

Thanks to Peter Zijlstra for suggesting this better solution. It
should work as long as the initial value of the region is all
0's and that's the case of static (per-cpu) memory allocation.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Link: http://lkml.kernel.org/r/1330391978-28070-1-git-send-email-namhyung.kim@lge.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
12 years agocrypto: mv_cesa - fix final callback not ignoring input data
Phil Sutter [Mon, 27 Feb 2012 11:17:04 +0000 (12:17 +0100)]
crypto: mv_cesa - fix final callback not ignoring input data

Broken by commit 6ef84509f3d439ed2d43ea40080643efec37f54f for users
passing a request with non-zero 'nbytes' field, like e.g. testmgr.

Cc: <stable@kernel.org> # 3.0+
Signed-off-by: Phil Sutter <phil.sutter@viprinet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
12 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarn...
Dave Airlie [Tue, 28 Feb 2012 08:20:14 +0000 (08:20 +0000)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/jbarnes/drm-intel into HEAD

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/drm-intel:
  drm/i915: Remove use of the autoreported ringbuffer HEAD position
  drm/i915: Prevent a machine hang by checking crtc->active before loading lut
  drm/i915: fix operator precedence when enabling RC6p
  drm/i915: fix a sprite watermark computation to avoid divide by zero if xpos<0
  drm/i915: fix mode set on load pipe. (v2)