linux-2.6
15 years agoufs: sector_t cannot be negative
Roel Kluin [Wed, 17 Jun 2009 23:26:28 +0000 (16:26 -0700)] 
ufs: sector_t cannot be negative

unsigned i_block,fragment cannot be negative.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Evgeniy Dushistov <dushistov@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoisofs: cleanup mount option processing
Jan Kara [Wed, 17 Jun 2009 23:26:27 +0000 (16:26 -0700)] 
isofs: cleanup mount option processing

Remove unused variables from isofs_sb_info (used to be some mount
options), unify variables for option to use 0/1 (some options used
'y'/'n'), use bit fields for option flags in superblock.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoisofs: fix setting of uid and gid to 0
Jan Kara [Wed, 17 Jun 2009 23:26:27 +0000 (16:26 -0700)] 
isofs: fix setting of uid and gid to 0

isofs allows setting of default uid and gid of files but value 0 was used
to indicate that user did not specify any uid/gid mount option.  Since
this option also overrides uid/gid set in Rock Ridge extension, it makes
sense to allow forcing uid/gid 0.  Fix option processing to allow this.

Cc: <Hans-Joachim.Baader@cjt.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoisofs: let mode and dmode mount options override rock ridge mode setting
Jan Kara [Wed, 17 Jun 2009 23:26:25 +0000 (16:26 -0700)] 
isofs: let mode and dmode mount options override rock ridge mode setting

So far, permissions set via 'mode' and/or 'dmode' mount options were
effective only if the medium had no rock ridge extensions (or was mounted
without them).  Add 'overriderockmode' mount option to indicate that these
options should override permissions set in rock ridge extensions.  Maybe
this should be default but the current behavior is there since mount
options were created so I think we should not change how they behave.

Cc: <Hans-Joachim.Baader@cjt.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoext3: make sure inode is deleted from orphan list after truncate
Jan Kara [Wed, 17 Jun 2009 23:26:24 +0000 (16:26 -0700)] 
ext3: make sure inode is deleted from orphan list after truncate

As Ted pointed out, it can happen that ext3_truncate() returns without
removing inode from orphan list.  This way we could in some rare cases
(like when we get ENOMEM from an allocation in ext3_truncate called
because of failed ext3_write_begin) leave the inode on orphan list and
that triggers assertion failure on umount.

So make ext3_truncate() always remove inode from in-memory orphan list.

Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agojbd: clean up journal_try_to_free_buffers()
Hisashi Hifumi [Wed, 17 Jun 2009 23:26:23 +0000 (16:26 -0700)] 
jbd: clean up journal_try_to_free_buffers()

I delete the following patch
"commit 3f31fddfa26b7594b44ff2b34f9a04ba409e0f91
Author: Mingming Cao <cmm@us.ibm.com>
Date:   Fri Jul 25 01:46:22 2008 -0700

    jbd: fix race between free buffer and commit transaction

This patch is no longer needed because if race between freeing buffer and
committing transaction functionality occurs and dio gets error, currently
dio falls back to buffered IO by the following patch.

commit 6ccfa806a9cfbbf1cd43d5b6aa47ef2c0eb518fd
Author: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp>
Date:   Tue Sep 2 14:35:40 2008 -0700

    VFS: fix dio write returning EIO when try_to_release_page fails

Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp>
Cc: Theodore Tso <tytso@mit.edu>
Cc: Mingming Cao <cmm@us.ibm.com>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoext3: fix chain verification in ext3_get_blocks()
Jan Kara [Wed, 17 Jun 2009 23:26:23 +0000 (16:26 -0700)] 
ext3: fix chain verification in ext3_get_blocks()

Chain verification in ext3_get_blocks() has been hosed since it called
verify_chain(chain, NULL) which always returns success.  As a result
readers could in theory race with truncate.  On the other hand the race
probably cannot happen with the current locking scheme, since by the
time ext3_truncate() is called all the pages are already removed and
hence get_block() shouldn't be called on such pages...

Signed-off-by: Jan Kara <jack@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoDoc fix: ext2 can only have 32,000 subdirs, not 32,768
Michael Shields [Wed, 17 Jun 2009 23:26:22 +0000 (16:26 -0700)] 
Doc fix: ext2 can only have 32,000 subdirs, not 32,768

ext2.txt says that dirs can have 32,768 subdirs, but the actual value of
EXT2_LINK_MAX is 32000.

ext3 is the same, but the doc does not mention it.  One of ext4's features
is to "fix 32000 subdirectory limit".

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoext2: Do not update mtime of a moved directory
Jan Kara [Wed, 17 Jun 2009 23:26:20 +0000 (16:26 -0700)] 
ext2: Do not update mtime of a moved directory

One of our users is complaining that his backup tool is upset on ext2
(while it's happy on ext3, xfs, ...) because of the mtime change.

The problem is:

    mkdir foo
    mkdir bar
    mkdir foo/a

Now under ext2:
    mv foo/a foo/b

changes mtime of 'foo/a' (foo/b after the move).  That does not really
make sense and it does not happen under any other filesystem I've seen.

More complicated is:
    mv foo/a bar/a

This changes mtime of foo/a (bar/a after the move) and it makes some
sense since we had to update parent directory pointer of foo/a.  But
again, no other filesystem does this.  So after some thoughts I'd vote
for consistency and change ext2 to behave the same as other filesystems.

Do not update mtime of a moved directory.  Specs don't say anything
about it (neither that it should, nor that it should not be updated) and
other common filesystems (ext3, ext4, xfs, reiserfs, fat, ...) don't do
it.  So let's become more consistent.

Spotted by ronny.pretzsch@dfs.de, initial fix by Jörn Engel.

Reported-by: <ronny.pretzsch@dfs.de>
Cc: <hare@suse.de>
Cc: Jörn Engel <joern@logfs.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agogpio: pca953x: Add support for PCA9556
Nate Case [Wed, 17 Jun 2009 23:26:18 +0000 (16:26 -0700)] 
gpio: pca953x: Add support for PCA9556

PCA9556 is the software-compatible predecessor to the PCA9557, so add it
to the supported I2C device ID table.

Signed-off-by: Nate Case <ncase@xes-inc.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agogpio: pca953x: Get platform_data from OpenFirmware
Nate Case [Wed, 17 Jun 2009 23:26:17 +0000 (16:26 -0700)] 
gpio: pca953x: Get platform_data from OpenFirmware

On OpenFirmware platforms, it makes the most sense to get platform_data
from the device tree.  Make an attempt to translate OF node properties
into platform_data struct before bailing out.

Note that the implementation approach taken differs from other device
drivers that make use of device tree information.  This is because I2C
chips are already registered automatically by of_i2c, so we can get by
with a small translator function in the driver.

[akpm@linux-foundation.org: coding-style fixes]
[akpm@linux-foundation.org: kfree(NULL) is legal]
Signed-off-by: Nate Case <ncase@xes-inc.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agogpio: max7301: add missing __devexit marking
Mike Frysinger [Wed, 17 Jun 2009 23:26:16 +0000 (16:26 -0700)] 
gpio: max7301: add missing __devexit marking

The remove member of the spi_driver max7301_driver uses __devexit_p(), so
the remove function itself should be marked with __devexit.  Even more so
considering the probe function is marked with __devinit.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Juergen Beisert <j.beisert@pengutronix.de>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopca953x: support GPIOLIB GPIO naming
Daniel Silverstone [Wed, 17 Jun 2009 23:26:15 +0000 (16:26 -0700)] 
pca953x: support GPIOLIB GPIO naming

Add support to the PCA953x driver to use the GPIOLIB naming facility for
GPIOs.

Signed-off-by: Daniel Silverstone <dsilvers@simtec.co.uk>
Cc: Ben Gardner <bgardner@wabtec.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agodrivers/char/rtc: disable legacy RTC driver on Blackfin systems
Mike Frysinger [Wed, 17 Jun 2009 23:26:14 +0000 (16:26 -0700)] 
drivers/char/rtc: disable legacy RTC driver on Blackfin systems

Blackfin platforms do not support the hardware which this driver drives.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc-ds1553: drop IRQF_SHARED
Atsushi Nemoto [Wed, 17 Jun 2009 23:26:13 +0000 (16:26 -0700)] 
rtc-ds1553: drop IRQF_SHARED

IRQF_SHARED should not be used with IRQF_DISABLED.  There is no in-tree
user of this driver and only out-of-tree user I know uses a dedicated irq
line for this RTC.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc-tx4939: drop IRQF_SHARED
Atsushi Nemoto [Wed, 17 Jun 2009 23:26:12 +0000 (16:26 -0700)] 
rtc-tx4939: drop IRQF_SHARED

IRQF_SHARED should not be used with IRQF_DISABLED.  This RTC have a
dedicated irq line to SoC's internal interrupt controller so there is
no reason to use IRQF_SHARED.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc: add stand-alone driver for RX8025 chip
Wolfgang Grandegger [Wed, 17 Jun 2009 23:26:11 +0000 (16:26 -0700)] 
rtc: add stand-alone driver for RX8025 chip

Add support for the Epson RX-8025SA/NB RTC chips.  It includes support for
alarms, periodic interrupts (1 Hz) and clock precision adjustment.

For clock precision adjustment, the SYSFS file "clock_adjust_ppb" gets
created in "/sys/class/rtc/rtcX/device".  It permits to set and get the
clock adjustment in ppb (parts per billion), e.g.:

  # echo -183000 > /sys/class/rtc/rtc0/device/clock_adjust_ppb
  # cat /sys/class/rtc/rtc0/device/clock_adjust_ppb
  -183000

This allows to compensate temperature dependent clock drifts.  According
to the RX8025 SA/NB application manual the frequency and temperature
characteristics can be approximated using the following equation:

  df = a * (ut - t)**2

  df: Frequency deviation in any temperature
  a : Coefficient = (-35 +-5) * 10**-9
  ut: Ultimate temperature in degree = +25 +-5 degree
  t : Any temperature in degree

Signed-off-by: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com>
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Dmitry Rakhchev <rda@emcraft.com>
Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc: rtc-ds1307 add ds3231
Wolfram Sang [Wed, 17 Jun 2009 23:26:10 +0000 (16:26 -0700)] 
rtc: rtc-ds1307 add ds3231

Add ds3231 variant.  For that, the BBSQI bit position was changed from a
simple define into a lookup-array as it differs.  This also removes
writing to an unused bit in case of the ds1337.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc: rtc-ds1307 add ds1388
Joakim Tjernlund [Wed, 17 Jun 2009 23:26:08 +0000 (16:26 -0700)] 
rtc: rtc-ds1307 add ds1388

Extend the ds1307 driver to support ds1388 too.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agortc: rtc-ds1742 nvram attribute fix
Torsten Ertbjerg Rasmussen [Wed, 17 Jun 2009 23:26:07 +0000 (16:26 -0700)] 
rtc: rtc-ds1742 nvram attribute fix

The RTC driver for ds1742 / ds1743 uses a static nvram attribute.  This
patch replaces this static attribute with one nvram attribute for each
ds174x registered.

The nvram size is not the same for all types of ds174x.  The nvram size is
accessible as the file size of the nvram attribute in sysfs.  With only a
single nvram attribute, this file size will be incorrect if more than one
type of ds174x is present on a system.  See the comment in the removed
code below.

This patch have been tested with linux-2.6.28 and linux-2.6.29-rc5/6 on a
custom board with one ds1743.

Signed-off-by: Torsten Ertbjerg Rasmussen <ertbjerg@gmail.com>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: fix spi_write_then_read() comment
Jiri Pirko [Wed, 17 Jun 2009 23:26:06 +0000 (16:26 -0700)] 
spi: fix spi_write_then_read() comment

Buffer needs not be dma-safe, not rx data length.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agopxa2xx_spi: fix for SPI_CS_HIGH
Daniel Ribeiro [Wed, 17 Jun 2009 23:26:06 +0000 (16:26 -0700)] 
pxa2xx_spi: fix for SPI_CS_HIGH

Commit a7bb3909b3293d503211d7f6af8ed62c1644b686 ("spi: pxa2xx_spi:
introduce chipselect GPIO to simplify the common cases") introduces
chipselect GPIO, and configures the CS polarity using SPI_CS_HIGH
spi->mode flag.  Add SPI_CS_HIGH to the allowed modes.

Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agompc52xx_psc_spi: convert to cs_control callback
Anton Vorontsov [Wed, 17 Jun 2009 23:26:05 +0000 (16:26 -0700)] 
mpc52xx_psc_spi: convert to cs_control callback

mpc52xx_psc_spi driver is the last user of the legacy activate_cs and
deactivate_cs callbacks, so convert the driver to the cs_control hook and
remove the legacy callbacks from fsl_spi_platform_data struct.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: move more spi_setup() functionality into core
David Brownell [Wed, 17 Jun 2009 23:26:04 +0000 (16:26 -0700)] 
spi: move more spi_setup() functionality into core

Move some common spi_setup() error checks into the SPI framework from the
spi_master controller drivers:

 - Add a new "mode_bits" field to spi_master

 - Use that in spi_setup to validate the spi->mode value being
   requested.  Setting this new field is now mandatory for any
   controller supporting more than vanilla SPI_MODE_0.

 - Update all spi_master drivers to:

     * Initialize that field
     * Remove current spi_setup() checks using that value.

This is a net minor code shrink.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi: move common spi_setup() functionality into core
David Brownell [Wed, 17 Jun 2009 23:26:03 +0000 (16:26 -0700)] 
spi: move common spi_setup() functionality into core

Start moving some spi_setup() functionality into the SPI core from the
various spi_master controller drivers:

 - Make that function stop being an inline;

 - Move two common idioms from drivers into that new function:
    * Default bits_per_word to 8 if that field isn't set
    * Issue a standardized dev_dbg() message

This is a net minor source code shrink, and supports enhancments found in
some follow-up patches.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agospi_bfin5xx: limit reaches -1
Roel Kluin [Wed, 17 Jun 2009 23:26:02 +0000 (16:26 -0700)] 
spi_bfin5xx: limit reaches -1

bfin_spi_flush() returns limit, which reaches -1 upon timeout.  but in
function bfin_spi_pump_transfers() it is compared with 0.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoproc.txt: update kernel filesystem/proc.txt documentation
Stefani Seibold [Wed, 17 Jun 2009 23:26:01 +0000 (16:26 -0700)] 
proc.txt: update kernel filesystem/proc.txt documentation

An update for the "Process-Specific Subdirectories" section to reflect the
changes till kernel 2.6.30.

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoproc: vmcore - use kzalloc in get_new_element()
Cyrill Gorcunov [Wed, 17 Jun 2009 23:26:00 +0000 (16:26 -0700)] 
proc: vmcore - use kzalloc in get_new_element()

Instead of kmalloc+memset better use straight kzalloc

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reviewed-by: WANG Cong <xiyou.wangcong@gmail.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoprocfs: remove sparse errors in proc_devtree.c
Michal Simek [Wed, 17 Jun 2009 23:25:59 +0000 (16:25 -0700)] 
procfs: remove sparse errors in proc_devtree.c

CHECK   fs/proc/proc_devtree.c
fs/proc/proc_devtree.c:197:14: warning: Using plain integer as NULL pointer
fs/proc/proc_devtree.c:203:34: warning: Using plain integer as NULL pointer
fs/proc/proc_devtree.c:210:14: warning: Using plain integer as NULL pointer
fs/proc/proc_devtree.c:223:26: warning: Using plain integer as NULL pointer
fs/proc/proc_devtree.c:226:14: warning: Using plain integer as NULL pointer

Signed-off-by: Michal Simek <monstr@monstr.eu>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoepoll: fix nested calls support
Davide Libenzi [Wed, 17 Jun 2009 23:25:58 +0000 (16:25 -0700)] 
epoll: fix nested calls support

This fixes a regression in 2.6.30.

I unfortunately accepted a patch time ago, to drop the "current" usage
from possible IRQ context, w/out proper thought over it.  The patch
switched to using the CPU id by bounding the nested call callback with a
get_cpu()/put_cpu().

Unfortunately the ep_call_nested() function can be called with a callback
that grabs sleepy locks (from own f_op->poll()), that results in epic
fails.  The following patch uses the proper "context" depending on the
path where it is called, and on the kind of callback.

This has been reported by Stefan Richter, that has also verified the patch
is his previously failing environment.

Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Reported-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMAINTAINERS: fbdev is orphaned
Andrew Morton [Wed, 17 Jun 2009 23:25:56 +0000 (16:25 -0700)] 
MAINTAINERS: fbdev is orphaned

Tony hasn't been heard from in 18 months and people keep sending him
things.

Cc: Joe Perches <joe@perches.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoproc: export statistics for softirq to /proc
Keika Kobayashi [Wed, 17 Jun 2009 23:25:55 +0000 (16:25 -0700)] 
proc: export statistics for softirq to /proc

Export statistics for softirq in /proc/softirqs and /proc/stat.

1. /proc/softirqs
Implement /proc/softirqs which shows the number of softirq
for each CPU like /proc/interrupts.

2. /proc/stat
Add the "softirq" line to /proc/stat.
This line shows the number of softirq for all cpu.
The first column is the total of all softirqs and
each subsequent column is the total for particular softirq.

[kosaki.motohiro@jp.fujitsu.com: remove redundant for_each_possible_cpu() loop]
Signed-off-by: Keika Kobayashi <kobayashi.kk@ncos.nec.co.jp>
Reviewed-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoirqs: add IRQF_SAMPLE_RANDOM to the feature-removal-schedule.txt (deprecated) list
Robin Getz [Wed, 17 Jun 2009 23:25:54 +0000 (16:25 -0700)] 
irqs: add IRQF_SAMPLE_RANDOM to the feature-removal-schedule.txt (deprecated) list

This adds IRQF_SAMPLE_RANDOM to the feature-removal (deprecated) list
since most of the IRQF_SAMPLE_RANDOM users are technically bogus as
entropy sources in the kernel's current entropy model.

This was discussed on the lkml the past few days, which started here:
http://lkml.org/lkml/2009/4/6/283

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agosoftirq: introduce statistics for softirq
Keika Kobayashi [Wed, 17 Jun 2009 23:25:52 +0000 (16:25 -0700)] 
softirq: introduce statistics for softirq

Statistics for softirq doesn't exist.
It will be helpful like statistics for interrupts.
This patch introduces counting the number of softirq,
which will be exported in /proc/softirqs.

When softirq handler consumes much CPU time,
/proc/stat is like the following.

$ while :; do  cat /proc/stat | head -n1 ; sleep 10 ; done
cpu  88 0 408 739665 583 28 2 0 0
cpu  450 0 1090 740970 594 28 1294 0 0
                              ^^^^
                             softirq

In such a situation,
/proc/softirqs shows us which softirq handler is invoked.
We can see the increase rate of softirqs.

<before>
$ cat /proc/softirqs
                CPU0       CPU1       CPU2       CPU3
HI                 0          0          0          0
TIMER         462850     462805     462782     462718
NET_TX             0          0          0        365
NET_RX          2472          2          2         40
BLOCK              0          0        381       1164
TASKLET            0          0          0        224
SCHED         462654     462689     462698     462427
RCU             3046       2423       3367       3173

<after>
$ cat /proc/softirqs
                CPU0       CPU1       CPU2       CPU3
HI                 0          0          0          0
TIMER         463361     465077     465056     464991
NET_TX            53          0          1        365
NET_RX          3757          2          2         40
BLOCK              0          0        398       1170
TASKLET            0          0          0        224
SCHED         463074     464318     464612     463330
RCU             3505       2948       3947       3673

When CPU TIME of softirq is high,
the rates of increase is the following.
  TIMER  : 220/sec     : CPU1-3
  NET_TX : 5/sec       : CPU0
  NET_RX : 120/sec     : CPU0
  SCHED  : 40-200/sec  : all CPU
  RCU    : 45-58/sec   : all CPU

The rates of increase in an idle mode is the following.
  TIMER  : 250/sec
  SCHED  : 250/sec
  RCU    : 2/sec

It seems many softirqs for receiving packets and rcu are invoked.  This
gives us help for checking system.

Signed-off-by: Keika Kobayashi <kobayashi.kk@ncos.nec.co.jp>
Reviewed-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agomd/raid5: correctly update sync_completed when we reach max_resync
NeilBrown [Wed, 17 Jun 2009 23:14:12 +0000 (09:14 +1000)] 
md/raid5: correctly update sync_completed when we reach max_resync

At the end of reshape_request we update cyrr_resync_completed
if we are about to pause due to reaching resync_max.
However we update it to the wrong value.  We need to add the
"reshape_sectors" that have just been reshaped.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd/raid5: add missing call to schedule() after prepare_to_wait()
Dan Williams [Tue, 16 Jun 2009 23:00:33 +0000 (16:00 -0700)] 
md/raid5: add missing call to schedule() after prepare_to_wait()

In the unlikely event that reshape progresses past the current request
while it is waiting for a stripe we need to schedule() before retrying
for 2 reasons:
1/ Prevent list corruption from duplicated list_add() calls without
   intervening list_del().
2/ Give the reshape code a chance to make some progress to resolve the
   conflict.

Cc: <stable@kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd/linear: use call_rcu to free obsolete 'conf' structures.
NeilBrown [Wed, 17 Jun 2009 22:49:42 +0000 (08:49 +1000)] 
md/linear: use call_rcu to free obsolete 'conf' structures.

Current, when we update the 'conf' structure, when adding a
drive to a linear array, we keep the old version around until
the array is finally stopped, as it is not safe to free it
immediately.

Now that we have rcu protection on all accesses to 'conf',
we can use call_rcu to free it more promptly.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd linear: Protecting mddev with rcu locks to avoid races
SandeepKsinha [Wed, 17 Jun 2009 22:49:35 +0000 (08:49 +1000)] 
md linear: Protecting mddev with rcu locks to avoid races

Due to the lack of memory ordering guarantees, we may have races around
mddev->conf.

In particular, the correct contents of the structure we get from
dereferencing ->private might not be visible to this CPU yet, and
they might not be correct w.r.t mddev->raid_disks.

This patch addresses the problem using rcu protection to avoid
such race conditions.

Signed-off-by: SandeepKsinha <sandeepksinha@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: Move check for bitmap presence to personality code.
Andre Noll [Wed, 17 Jun 2009 22:49:23 +0000 (08:49 +1000)] 
md: Move check for bitmap presence to personality code.

If the superblock of a component device indicates the presence of a
bitmap but the corresponding raid personality does not support bitmaps
(raid0, linear, multipath, faulty), then something is seriously wrong
and we'd better refuse to run such an array.

Currently, this check is performed while the superblocks are examined,
i.e. before entering personality code. Therefore the generic md layer
must know which raid levels support bitmaps and which do not.

This patch avoids this layer violation without adding identical code
to various personalities. This is accomplished by introducing a new
public function to md.c, md_check_no_bitmap(), which replaces the
hard-coded checks in the superblock loading functions.

A call to md_check_no_bitmap() is added to the ->run method of each
personality which does not support bitmaps and assembly is aborted
if at least one component device contains a bitmap.

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: remove chunksize rounding from common code.
NeilBrown [Wed, 17 Jun 2009 22:48:58 +0000 (08:48 +1000)] 
md: remove chunksize rounding from common code.

It is easiest to round sizes to multiples of chunk size in
the personality code for those personalities which care.
Those personalities now do the rounding, so we can
remove that function from common code.

Also remove the upper bound on the size of a chunk, and the lower
bound on the size of a device (1 chunk), neither of which really buy
us anything.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: raid0/linear: ensure device sizes are rounded to chunk size.
NeilBrown [Wed, 17 Jun 2009 22:48:55 +0000 (08:48 +1000)] 
md: raid0/linear: ensure device sizes are rounded to chunk size.

This is currently ensured by common code, but it is more reliable to
ensure it where it is needed in personality code.
All the other personalities that care already round the size to
the chunk_size.  raid0 and linear are the only hold-outs.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: move assignment of ->utime so that it never gets skipped.
NeilBrown [Wed, 17 Jun 2009 22:48:19 +0000 (08:48 +1000)] 
md: move assignment of ->utime so that it never gets skipped.

Currently the assignment to utime gets skipped for 'external'
metadata.  So move it to the top of the function so that it
always gets effected.
This is of largely cosmetic interest.  Nothing actually depends
on ->utime being right for external arrays.
"mdadm --monitor" does use it for 0.90 and 1.x arrays, but with
mdadm-3.0, this is not important for external metadata.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: Push down reconstruction log message to personality code.
Andre Noll [Wed, 17 Jun 2009 22:48:06 +0000 (08:48 +1000)] 
md: Push down reconstruction log message to personality code.

Currently, the md layer checks in analyze_sbs() if the raid level
supports reconstruction (mddev->level >= 1) and if reconstruction is
in progress (mddev->recovery_cp != MaxSector).

Move that printk into the personality code of those raid levels that
care (levels 1, 4, 5, 6, 10).

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: merge reconfig and check_reshape methods.
NeilBrown [Wed, 17 Jun 2009 22:47:55 +0000 (08:47 +1000)] 
md: merge reconfig and check_reshape methods.

The difference between these two methods is artificial.
Both check that a pending reshape is valid, and perform any
aspect of it that can be done immediately.
'reconfig' handles chunk size and layout.
'check_reshape' handles raid_disks.

So make them just one method.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: remove unnecessary arguments from ->reconfig method.
NeilBrown [Wed, 17 Jun 2009 22:47:42 +0000 (08:47 +1000)] 
md: remove unnecessary arguments from ->reconfig method.

Passing the new layout and chunksize as args is not necessary as
the mddev has fields for new_check and new_layout.

This is preparation for combining the check_reshape and reconfig
methods

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: raid5: check stripe cache is large enough in start_reshape
NeilBrown [Wed, 17 Jun 2009 22:47:20 +0000 (08:47 +1000)] 
md: raid5: check stripe cache is large enough in start_reshape

In reshape cases that do not change the number of devices,
start_reshape is called without first calling check_reshape.

Currently, the check that the stripe_cache is large enough is
only done in check_reshape.  It should be in start_reshape too.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: raid0: chunk_sectors cleanups.
NeilBrown [Wed, 17 Jun 2009 22:47:00 +0000 (08:47 +1000)] 
md: raid0: chunk_sectors cleanups.

following the conversion to chunk_sectors, there is room
for cleaning up a little.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: fix some comments.
Andre Noll [Wed, 17 Jun 2009 22:46:47 +0000 (08:46 +1000)] 
md: fix some comments.

1/ Raid5 has learned to take over also raid4 and raid6 arrays.
2/ new_chunk in mdp_superblock_1 is in sectors, not bytes.

Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd/raid5: Use is_power_of_2() in raid5_reconfig()/raid6_reconfig().
Andre Noll [Wed, 17 Jun 2009 22:46:10 +0000 (08:46 +1000)] 
md/raid5: Use is_power_of_2() in raid5_reconfig()/raid6_reconfig().

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: convert conf->chunk_size and conf->prev_chunk to sectors.
Andre Noll [Wed, 17 Jun 2009 22:45:55 +0000 (08:45 +1000)] 
md: convert conf->chunk_size and conf->prev_chunk to sectors.

This kills some more shifts.

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: Convert mddev->new_chunk to sectors.
Andre Noll [Wed, 17 Jun 2009 22:45:27 +0000 (08:45 +1000)] 
md: Convert mddev->new_chunk to sectors.

A straight-forward conversion which gets rid of some
multiplications/divisions/shifts. The patch also introduces a couple
of new ones, most of which are due to conf->chunk_size still being
represented in bytes. This will be cleaned up in subsequent patches.

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
15 years agomd: Make mddev->chunk_size sector-based.
Andre Noll [Wed, 17 Jun 2009 22:45:01 +0000 (08:45 +1000)] 
md: Make mddev->chunk_size sector-based.

This patch renames the chunk_size field to chunk_sectors with the
implied change of semantics.  Since

is_power_of_2(chunk_size) = is_power_of_2(chunk_sectors << 9)
  = is_power_of_2(chunk_sectors)

these bits don't need an adjustment for the shift.

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
15 years agoia64: Fix resource assignment for root busses
Matthew Wilcox [Wed, 17 Jun 2009 20:33:36 +0000 (16:33 -0400)] 
ia64: Fix resource assignment for root busses

ia64 was assigning resources to root busses after allocations had
been made for child busses.  Calling pcibios_setup_root_windows() from
pcibios_fixup_bus() solves this problem by assigning the resources to
the root bus before child busses are scanned.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Tested-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agox86: Use pci_claim_resource
Matthew Wilcox [Wed, 17 Jun 2009 20:33:35 +0000 (16:33 -0400)] 
x86: Use pci_claim_resource

Instead of open-coding pci_find_parent_resource and request_resource,
just call pci_claim_resource.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoDelete pcibios_select_root
Matthew Wilcox [Wed, 17 Jun 2009 20:33:34 +0000 (16:33 -0400)] 
Delete pcibios_select_root

This function was only used by pci_claim_resource(), and the last commit
deleted that use.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoFix pci_claim_resource
Matthew Wilcox [Wed, 17 Jun 2009 20:33:33 +0000 (16:33 -0400)] 
Fix pci_claim_resource

Instead of starting from the iomem or ioport roots, start from the
parent bus' resources.  This fixes a bug where child resources would
appear above their parents resources if they had the same size.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Tested-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Wed, 17 Jun 2009 18:53:48 +0000 (11:53 -0700)] 
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Convert ia64 to use int-ll64.h
  [IA64] Fix build error in paravirt_patchlist.c
  [IA64] ia64 does not need umount2() syscall
  [IA64] hook up new rt_tgsigqueueinfo syscall
  [IA64] msi_ia64.c dmar_msi_type should be static
  [IA64] remove obsolete hw_interrupt_type
  [IA64] remove obsolete irq_desc_t typedef
  [IA64] remove obsolete no_irq_type
  [IA64] unexport fpswa.h

15 years agoMerge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
Linus Torvalds [Wed, 17 Jun 2009 18:41:49 +0000 (11:41 -0700)] 
Merge branch 'for-next' of git://git./linux/kernel/git/sameo/mfd-2.6

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: early init for MFD running regulators
  mfd: fix tmio related warnings
  mfd: asic3: enable SD/SDIO cell
  mfd: asic3: enable DS1WM cell
  mfd: asic3: remove SD/SDIO controller register definitions
  mfd: asic3: use resource_size macro instead of local variable
  mfd: add ASIC3 IRQ numbers
  mfd: asic3: add clock handling for MFD cells
  mfd: asic3: add asic3_set_register common operation
  mfd: Fix Kconfig help text for WM8350
  mfd: add PCAP driver
  mfd: add U300 AB3100 core support
  drivers/mfd: remove obsolete irq_desc_t typedef
  mfd/pcf50633-gpio.c: add MODULE_LICENSE
  mfd: Mark WM8350 mask revision as readable to match silicon
  mfd: Mark clocks_init as non-init in twl4030-core.c
  mfd: Correct readability of WM8350 register 227

15 years agoMerge branch 'kmemleak' of git://linux-arm.org/linux-2.6
Linus Torvalds [Wed, 17 Jun 2009 17:42:21 +0000 (10:42 -0700)] 
Merge branch 'kmemleak' of git://linux-arm.org/linux-2.6

* 'kmemleak' of git://linux-arm.org/linux-2.6:
  kmemleak: Fix some typos in comments
  kmemleak: Rename kmemleak_panic to kmemleak_stop
  kmemleak: Only use GFP_KERNEL|GFP_ATOMIC for the internal allocations

15 years agomfd: early init for MFD running regulators
Samuel Ortiz [Mon, 15 Jun 2009 16:04:54 +0000 (18:04 +0200)] 
mfd: early init for MFD running regulators

For MFDs running regulator cores, we really want them to be brought up early
during boot.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Mike Rapoport <mike@compulab.co.il>
15 years agomfd: fix tmio related warnings
Samuel Ortiz [Mon, 15 Jun 2009 13:43:31 +0000 (15:43 +0200)] 
mfd: fix tmio related warnings

We can not have .driver_data as const since platform_set_drvdata() doesnt take
a const.
The hclk mmc_data field can be const though.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: asic3: enable SD/SDIO cell
Philipp Zabel [Mon, 15 Jun 2009 10:10:25 +0000 (12:10 +0200)] 
mfd: asic3: enable SD/SDIO cell

This enables the ASIC3's SD/SDIO MFD cell, supported by the tmio_mmc driver.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: asic3: enable DS1WM cell
Philipp Zabel [Mon, 15 Jun 2009 10:10:24 +0000 (12:10 +0200)] 
mfd: asic3: enable DS1WM cell

This enables the ASIC3's DS1WM MFD cell, supported by the ds1wm driver.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: asic3: remove SD/SDIO controller register definitions
Philipp Zabel [Fri, 5 Jun 2009 16:31:05 +0000 (18:31 +0200)] 
mfd: asic3: remove SD/SDIO controller register definitions

Only the base addresses remain, as they are needed to set up
the IOMEM resources.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: asic3: use resource_size macro instead of local variable
Philipp Zabel [Fri, 5 Jun 2009 16:31:04 +0000 (18:31 +0200)] 
mfd: asic3: use resource_size macro instead of local variable

This should make the code a little bit easier to read.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: add ASIC3 IRQ numbers
Philipp Zabel [Fri, 5 Jun 2009 16:31:03 +0000 (18:31 +0200)] 
mfd: add ASIC3 IRQ numbers

IRQ number definitions for PWM, LED, SPI and OWM (ds1wm).

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: asic3: add clock handling for MFD cells
Philipp Zabel [Fri, 5 Jun 2009 16:31:02 +0000 (18:31 +0200)] 
mfd: asic3: add clock handling for MFD cells

Since ASIC3 has to work on both PXA and S3C and since their
struct clk implementations differ, we can't register out
clocks with the clkdev mechanism (yet?).
For now we have to keep clock handling internal to this
driver and enable/disable the clocks via the
mfd_cell->enable/disable functions.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: asic3: add asic3_set_register common operation
Philipp Zabel [Fri, 5 Jun 2009 16:31:01 +0000 (18:31 +0200)] 
mfd: asic3: add asic3_set_register common operation

Used to configure single bits of the SDHWCTRL_SDCONF and EXTCF_RESET/SELECT
registers needed for DS1WM, MMC/SDIO and PCMCIA functionality.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: Fix Kconfig help text for WM8350
Mark Brown [Fri, 29 May 2009 10:34:18 +0000 (11:34 +0100)] 
mfd: Fix Kconfig help text for WM8350

More with the grammar.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: add PCAP driver
Daniel Ribeiro [Thu, 28 May 2009 18:43:37 +0000 (15:43 -0300)] 
mfd: add PCAP driver

The PCAP Asic as present on EZX phones is a multi function device with
voltage regulators, ADC, touch screen controller, RTC, USB transceiver,
leds controller, and audio codec.

It has two SPI ports, typically one is connected to the application
processor and another to the baseband, this driver provides read/write
functions to its registers, irq demultiplexer and ADC
queueing/abstraction.

This chip is used on a lot of Motorola phones, it was manufactured by TI
as a custom product with the name PTWL93017, later this design evolved
into the ATLAS PMIC from Freescale (MC13783).

Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: add U300 AB3100 core support
Linus Walleij [Thu, 21 May 2009 21:17:06 +0000 (23:17 +0200)] 
mfd: add U300 AB3100 core support

This adds a core driver for the AB3100 mixed-signal circuit
found in the ST-Ericsson U300 series platforms. This driver
is a singleton proxy for all accesses to the AB3100
sub-drivers which will be merged on top of this one, RTC,
regulators, battery and system power control, vibrator,
LEDs, and an ALSA codec.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Reviewed-by: Mike Rapoport <mike@compulab.co.il>
Reviewed-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agodrivers/mfd: remove obsolete irq_desc_t typedef
Thomas Gleixner [Tue, 12 May 2009 20:45:15 +0000 (13:45 -0700)] 
drivers/mfd: remove obsolete irq_desc_t typedef

The defines and typedefs (hw_interrupt_type, no_irq_type, irq_desc_t) have
been kept around for migration reasons.  After more than two years it's
time to remove them finally.

This patch cleans up one of the remaining users.  When all such patches
hit mainline we can remove the defines and typedefs finally.

Impact: cleanup

Convert the last remaining users and remove the typedef.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd/pcf50633-gpio.c: add MODULE_LICENSE
Adrian Bunk [Tue, 12 May 2009 20:45:14 +0000 (13:45 -0700)] 
mfd/pcf50633-gpio.c: add MODULE_LICENSE

Add the missing MODULE_LICENSE("GPL").

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Balaji Rao <balajirrao@openmoko.org>
Cc: Andy Green <andy@openmoko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: Mark WM8350 mask revision as readable to match silicon
Mark Brown [Wed, 22 Apr 2009 20:46:51 +0000 (21:46 +0100)] 
mfd: Mark WM8350 mask revision as readable to match silicon

No impact unless someone has written additional kernel code.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: Mark clocks_init as non-init in twl4030-core.c
Rakib Mullick [Sun, 19 Apr 2009 02:56:49 +0000 (08:56 +0600)] 
mfd: Mark clocks_init as non-init in twl4030-core.c

Impact: Fix section mismatch.

clocks_init() has been called from twl4030_probe() which is a non-init
function. Since probing can be done anytime so clocks_init will be
called anytime too. So we mark clock_init() as non-init.

LD      drivers/mfd/built-in.o
WARNING: drivers/mfd/built-in.o(.text+0x8dd9): Section mismatch in
reference from the function twl4030_probe() to the function
.init.text:clocks_init()
The function twl4030_probe() references
the function __init clocks_init().
This is often because twl4030_probe lacks a __init
annotation or the annotation of clocks_init is wrong.

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agomfd: Correct readability of WM8350 register 227
Mark Brown [Mon, 13 Apr 2009 13:05:02 +0000 (14:05 +0100)] 
mfd: Correct readability of WM8350 register 227

This includes the USB current limit status override which is used in the
power management driver.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
15 years agokmemleak: Fix some typos in comments
Catalin Marinas [Wed, 17 Jun 2009 17:29:04 +0000 (18:29 +0100)] 
kmemleak: Fix some typos in comments

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
15 years agokmemleak: Rename kmemleak_panic to kmemleak_stop
Catalin Marinas [Wed, 17 Jun 2009 17:29:03 +0000 (18:29 +0100)] 
kmemleak: Rename kmemleak_panic to kmemleak_stop

This is to avoid the confusion created by the "panic" word.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
15 years agokmemleak: Only use GFP_KERNEL|GFP_ATOMIC for the internal allocations
Catalin Marinas [Wed, 17 Jun 2009 17:29:02 +0000 (18:29 +0100)] 
kmemleak: Only use GFP_KERNEL|GFP_ATOMIC for the internal allocations

Kmemleak allocates memory for pointer tracking and it tries to avoid
using GFP_ATOMIC if the caller doesn't require it. However other gfp
flags may be passed by the caller which aren't required by kmemleak.
This patch filters the gfp flags so that only GFP_KERNEL | GFP_ATOMIC
are used.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
15 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
Linus Torvalds [Wed, 17 Jun 2009 16:51:50 +0000 (09:51 -0700)] 
Merge branch 'fixes' of git://git./linux/kernel/git/davej/cpufreq

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] cpumask: new cpumask operators for arch/x86/kernel/cpu/cpufreq/powernow-k8.c
  [CPUFREQ] cpumask: avoid playing with cpus_allowed in powernow-k8.c
  [CPUFREQ] cpumask: avoid cpumask games in arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
  [CPUFREQ] cpumask: avoid playing with cpus_allowed in speedstep-ich.c
  [CPUFREQ] powernow-k8: get drv data for correct CPU
  [CPUFREQ] powernow-k8: read P-state from HW
  [CPUFREQ] reduce scope of ACPI_PSS_BIOS_BUG_MSG[]
  [CPUFREQ] Clean up convoluted code in arch/x86/kernel/tsc.c:time_cpufreq_notifier()
  [CPUFREQ] minor correction to cpu-freq documentation
  [CPUFREQ] powernow-k8.c: mess cleanup
  [CPUFREQ] Only set sampling_rate_max deprecated, sampling_rate_min is useful
  [CPUFREQ] powernow-k8: Set transition latency to 1 if ACPI tables export 0
  [CPUFREQ] ondemand: Uncouple minimal sampling rate from HZ in NO_HZ case

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
Linus Torvalds [Wed, 17 Jun 2009 16:50:44 +0000 (09:50 -0700)] 
Merge git://git./linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6:
  [SCSI] aic79xx: make driver respect nvram for IU and QAS settings
  [SCSI] don't attach ULD to Dell Universal Xport
  [SCSI] lpfc 8.3.3 : Update driver version to 8.3.3
  [SCSI] lpfc 8.3.3 : Add support for Target Reset handler entrypoint
  [SCSI] lpfc 8.3.3 : Fix a couple of spin_lock and memory issues and a crash
  [SCSI] lpfc 8.3.3 : FC/FCOE discovery fixes
  [SCSI] lpfc 8.3.3 : Fix various SLI-3 vs SLI-4 differences
  [SCSI] qla2xxx: Resolve a performance issue in interrupt
  [SCSI] cnic, bnx2i: Fix build failure when CONFIG_PCI is not set.
  [SCSI] nsp_cs: time_out reaches -1
  [SCSI] qla2xxx: fix printk format warnings
  [SCSI] ncr53c8xx: div reaches -1
  [SCSI] compat: don't perform unneeded copy in sg_io code
  [SCSI] zfcp: Update FC pass-through support
  [SCSI] zfcp: Add FC pass-through support
  [SCSI] FC Pass Thru support

15 years agoMerge branch 'linux-next' of git://git.infradead.org/ubi-2.6
Linus Torvalds [Wed, 17 Jun 2009 16:48:30 +0000 (09:48 -0700)] 
Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6

* 'linux-next' of git://git.infradead.org/ubi-2.6: (21 commits)
  UBI: add reboot notifier
  UBI: handle more error codes
  UBI: fix multiple spelling typos
  UBI: fix kmem_cache_free on error patch
  UBI: print amount of reserved PEBs
  UBI: improve messages in the WL worker
  UBI: make gluebi a separate module
  UBI: remove built-in gluebi
  UBI: add notification API
  UBI: do not switch to R/O mode on read errors
  UBI: fix and clean-up error paths in WL worker
  UBI: introduce new constants
  UBI: fix race condition
  UBI: minor serialization fix
  UBI: do not panic if volume check fails
  UBI: add dump_stack in checking code
  UBI: fix races in I/O debugging checks
  UBI: small debugging code optimization
  UBI: improve debugging messages
  UBI: re-name volumes_mutex to device_mutex
  ...

15 years agoMerge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
Linus Torvalds [Wed, 17 Jun 2009 16:46:33 +0000 (09:46 -0700)] 
Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6

* 'linux-next' of git://git.infradead.org/ubifs-2.6:
  UBIFS: start using hrtimers
  hrtimer: export ktime_add_safe
  UBIFS: do not forget to register BDI device
  UBIFS: allow sync option in rootflags
  UBIFS: remove dead code
  UBIFS: use anonymous device
  UBIFS: return proper error code if the compr is not present
  UBIFS: return error if link and unlink race
  UBIFS: reset no_space flag after inode deletion

15 years agoDocumentation/vm/Makefile: don't try to build slqbinfo
Andrew Morton [Wed, 17 Jun 2009 05:38:29 +0000 (22:38 -0700)] 
Documentation/vm/Makefile: don't try to build slqbinfo

For it is only in linux-next at this stage.

Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agodrm/radeon/kms: remove the _DRM_DRIVER from the KMS paths.
Dave Airlie [Wed, 17 Jun 2009 07:21:13 +0000 (17:21 +1000)] 
drm/radeon/kms: remove the _DRM_DRIVER from the KMS paths.

This causes an issue since we fixed the drm mappings to do the right thing,
so its just a copy and pasto.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
Linus Torvalds [Wed, 17 Jun 2009 16:41:25 +0000 (09:41 -0700)] 
Merge branch 'for-linus' of git://git./linux/kernel/git/penberg/slab-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  SLUB: Fix early boot GFP_DMA allocations
  SLUB: Don't print out OOM warning for __GFP_NOFAIL
  SLUB: fix build when !SLUB_DEBUG
  SLUB: Out-of-memory diagnostics
  slab: document kzfree() zeroing behavior
  slab: fix generic PAGE_POISONING conflict with SLAB_RED_ZONE
  slob: use PG_slab for identifying SLOB pages

15 years agoPull for-2.6.31 into release
Tony Luck [Wed, 17 Jun 2009 16:35:24 +0000 (09:35 -0700)] 
Pull for-2.6.31 into release

15 years ago[IA64] Convert ia64 to use int-ll64.h
Matthew Wilcox [Fri, 22 May 2009 20:49:49 +0000 (13:49 -0700)] 
[IA64] Convert ia64 to use int-ll64.h

It is generally agreed that it would be beneficial for u64 to be an
unsigned long long on all architectures.  ia64 (in common with several
other 64-bit architectures) currently uses unsigned long.  Migrating
piecemeal is too painful; this giant patch fixes all compilation warnings
and errors that come as a result of switching to use int-ll64.h.

Note that userspace will still see __u64 defined as unsigned long.  This
is important as it affects C++ name mangling.

[Updated by Tony Luck to change efi.h:efi_freemem_callback_t to use
 u64 for start/end rather than unsigned long]

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
15 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Wed, 17 Jun 2009 16:13:52 +0000 (09:13 -0700)] 
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (47 commits)
  MIPS: Add hibernation support
  MIPS: Move Cavium CP0 hwrena impl bits to cpu-feature-overrides.h
  MIPS: Allow CPU specific overriding of CP0 hwrena impl bits.
  MIPS: Kconfig Add SYS_SUPPORTS_HUGETLBFS and enable it for some systems.
  Hugetlbfs: Enable hugetlbfs for more systems in Kconfig.
  MIPS: TLB support for hugetlbfs.
  MIPS: Add hugetlbfs page defines.
  MIPS: Add support files for hugetlbfs.
  MIPS: Remove unused parameters from iPTE_LW.
  Staging: Add octeon-ethernet driver files.
  MIPS: Export erratum function needed by octeon-ethernet driver.
  MIPS: Cavium-Octeon: Add more chip specific feature tests.
  MIPS: Cavium-Octeon: Add more board type constants.
  MIPS: Export cvmx_sysinfo_get needed by octeon-ethernet driver.
  MIPS: Add named alloc functions to OCTEON boot monitor memory allocator.
  MIPS: Alchemy: devboards: Convert to gpio calls.
  MIPS: Alchemy: xxs1500: use linux gpio api.
  MIPS: Alchemy: MTX-1: Use linux gpio api.
  MIPS: Alchemy: Rewrite GPIO support.
  MIPS: Alchemy: Remove unused au1000_gpio.h header
  ...

15 years ago[IA64] Fix build error in paravirt_patchlist.c
Jes Sorensen [Wed, 17 Jun 2009 16:04:40 +0000 (09:04 -0700)] 
[IA64] Fix build error in paravirt_patchlist.c

Andrew cleaned up some #include tangles in:
commit 0d9c25dde878a636ee9a9b53923569171bf9a55b
  headers: move module_bug_finalize()/module_bug_cleanup() definitions into module.h

which resulted in this build error for ia64:
  CC      arch/ia64/kernel/paravirt_patchlist.o
arch/ia64/kernel/paravirt_patchlist.c:43: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__initdata'
arch/ia64/kernel/paravirt_patchlist.c:54: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'paravirt_get_gate_patchlist'
arch/ia64/kernel/paravirt_patchlist.c:76: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'paravirt_get_gate_section'
make[1]: *** [arch/ia64/kernel/paravirt_patchlist.o] Error 1

The problem was that paravirt_patchlist.c was relying on some of the
nested includes (specifically that linux/bug.h included linux/module.h

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
Linus Torvalds [Wed, 17 Jun 2009 15:46:57 +0000 (08:46 -0700)] 
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  get rid of BKL in fs/sysv
  get rid of BKL in fs/minix
  get rid of BKL in fs/efs
  befs ->pust_super() doesn't need BKL
  Cleanup of adfs headers
  9P doesn't need BKL in ->umount_begin()
  fuse doesn't need BKL in ->umount_begin()
  No instance of ->bmap() needs BKL
  remove unlock_kernel() left accidentally
  ext4: avoid unnecessary spinlock in critical POSIX ACL path
  ext3: avoid unnecessary spinlock in critical POSIX ACL path

15 years agoMIPS: Add hibernation support
Wu Zhangjin [Thu, 4 Jun 2009 12:27:10 +0000 (20:27 +0800)] 
MIPS: Add hibernation support

[Ralf: SMP support requires CPU hotplugging which MIPS currently doesn't
support.  As implemented in this patch cache and tlb flushing will also be
invoked with interrupts disabled so smp_call_function() will blow up in
charming ways.  So limit to !SMP.]

Reviewed-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Yan Hua <yanh@lemote.com>
Reviewed-by: Arnaud Patard <apatard@mandriva.com>
Reviewed-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Hu Hongbing <huhb@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Move Cavium CP0 hwrena impl bits to cpu-feature-overrides.h
David Daney [Wed, 13 May 2009 22:59:56 +0000 (15:59 -0700)] 
MIPS: Move Cavium CP0 hwrena impl bits to cpu-feature-overrides.h

We had an ugly #ifdef for Cavium Octeon hwrena bits in traps.c, remove
it to mach-cavium-octeon/cpu-feature-overrides.h

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Allow CPU specific overriding of CP0 hwrena impl bits.
David Daney [Wed, 13 May 2009 22:59:55 +0000 (15:59 -0700)] 
MIPS: Allow CPU specific overriding of CP0 hwrena impl bits.

Some CPUs have implementation dependent rdhwr registers.  Allow them
to be enabled on a per CPU basis.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Kconfig Add SYS_SUPPORTS_HUGETLBFS and enable it for some systems.
David Daney [Thu, 28 May 2009 00:47:46 +0000 (17:47 -0700)] 
MIPS: Kconfig Add SYS_SUPPORTS_HUGETLBFS and enable it for some systems.

Add new kconfig variables SYS_SUPPORTS_HUGETLBFS and
CPU_SUPPORTS_HUGEPAGES.  They are enabled for systems that are known
to support huge pages.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoHugetlbfs: Enable hugetlbfs for more systems in Kconfig.
David Daney [Thu, 28 May 2009 00:47:45 +0000 (17:47 -0700)] 
Hugetlbfs: Enable hugetlbfs for more systems in Kconfig.

As part of adding hugetlbfs support for MIPS, I am adding a new
kconfig variable 'SYS_SUPPORTS_HUGETLBFS'.  Since some mips cpu
varients don't yet support it, we can enable selection of HUGETLBFS on
a system by system basis from the arch/mips/Kconfig.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
CC: William Irwin <wli@holomorphy.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: TLB support for hugetlbfs.
David Daney [Thu, 28 May 2009 00:47:44 +0000 (17:47 -0700)] 
MIPS: TLB support for hugetlbfs.

The TLB handlers need to check for huge pages and give them special
handling.  Huge pages consist of two contiguous sub-pages of physical
memory.

* Loading entrylo0 and entrylo1 need to be handled specially.

* The page mask must be set for huge pages and then restored after
  writing the TLB entries.

* The PTE for huge pages resides in the PMD, we halt traversal of the
  tables there.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Add hugetlbfs page defines.
David Daney [Thu, 28 May 2009 00:47:43 +0000 (17:47 -0700)] 
MIPS: Add hugetlbfs page defines.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Add support files for hugetlbfs.
David Daney [Thu, 28 May 2009 00:47:42 +0000 (17:47 -0700)] 
MIPS: Add support files for hugetlbfs.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
15 years agoMIPS: Remove unused parameters from iPTE_LW.
David Daney [Fri, 8 May 2009 22:10:50 +0000 (15:10 -0700)] 
MIPS: Remove unused parameters from iPTE_LW.

The l parameter to iPTE_LW() is unused. Remove it and from some of its
callers as well.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>