I added a paragraph on choosing label names, and updated the example
code to use a better label name.  I also cleaned up the example code to
more modern style by moving the allocation out of the initializer and
changing the NULL check.

Perhaps the most common type of error handling bug in the kernel is "one
err bugs".  CodingStyle already says that we should "avoid nesting" by
using error labels and one err style error handling tends to have
multiple indent levels, so this was already bad style.  But I've added a
new paragraph explaining how to avoid one err bugs by using multiple
error labels which is, hopefully, more clear.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NJulia Lawall <julia.lawall@lip6.fr>
[jc: added GFP_KERNEL to kmalloc() call]
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Also, adjust the formatting a bit, and expand the section about using
TARGETS= on the make command line.
Signed-off-by: NTim Bird <tim.bird@sonymobile.com>
Acked-by: NShuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

"That letter [the last s] is sad because all the others
have those things [=] below them and it does not."

This patch fixes the tragedy so all the letters can
be happy again.
Signed-off-by: NMaisa Roponen <maisa.roponen@gmail.com>
[The author being 4 years old needed some assistance]
Signed-off-by: NTero Roponen <tero.roponen@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

This patch fix spelling typos found in Documentation/power.
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

This patch adds 1GB large page support information in
Documentation/vm/hugetlbpage.txt

Reference:
https://lkml.org/lkml/2014/10/31/366Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Reviewed-by: NLuiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

This patch also adds a reference to ip-sysctl.txt
where TCP metrics setup is described
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

This patch fix a typo in Documentation/mailbox.txt
"bool async" is defined in struct demo_client.
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Document several common practices and conventions regarding conditional
compilation, most notably the preference for ifdefs in headers rather
than .c files.
Signed-off-by: NJosh Triplett <josh@joshtriplett.org>
Acked-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

With legacy booting, the platform init code was taking care of
the configuring of GPIOs. With device tree based booting, things
may or may not work depending what bootloader has configured or
if the legacy platform code gets called.

Let's add support for the pwrdn and reset GPIOs to the smc91x
driver to fix the issues of smc91x not working properly when
booted in device tree mode.

And let's change n900 to use these settings as some versions
of the bootloader do not configure things properly causing
errors.
Reported-by: NKevin Hilman <khilman@linaro.org>
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This reverts commit 68da1664.

It turns out that the assertion about scope of regressions due to
always keeping keyboard controller in legacy mode was proven wrong.
There are laptops, such as Clevo W650SH, that only have internal
touchpad (no external PS/2 ports), that require active multiplexing
mode to switch the touchpad (Elantech) into native mode instead of
basic PS/2 emulation.
Reported-by: NRoel Aaij <roel.aaij@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The reported-by text says you have to ask for permission, but that
should only be if the bug was reported in private.  These days the
standard is to always give reported-by credit or it's considered a bit
rude.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The linux-next wiki at http://linux.f-seidel.de/linux-next/pmwiki has
been gone for several months now.
Signed-off-by: NJim Davis <jim.epost@gmail.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The prctl test code in Documentation/ tries to show how to
use a call that only makes sense on x86. Restrict it there
so that other platforms don't try to call asm("rdtsc").
Signed-off-by: NAlexander Graf <agraf@suse.de>
Acked-by: NPeter Foley <pefoley2@pefoley.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Signed-off-by: NMaciej W. Rozycki <macro@linux-mips.org>
[ jc: wording tweaked slightly ]
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

The use of 64-bit math on i386 causes build failures:
vdso_standalone_test_x86.c:(.text+0x101): undefined reference to `__umoddi3'
vdso_standalone_test_x86.c:(.text+0x12d): undefined reference to `__udivdi3'

Commit adb19fb6 (Documentation: add makefiles for more targets) is
now building this by default, so it's failing the kernel build entirely.

Switching the declaration from uint64_t to time_t does the right thing
and handles the x32 case automatically.
Signed-off-by: NJeff Mahoney <jeffm@suse.com>
Acked-by: NPeter Foley <pefoley2@pefoley.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

This patch brings back the makefile called testptp.mk which was removed
in commit adb19fb6 (Documentation: add makefiles for more targets).

While the idea of that commit was to improve build coverage of the
examples, the new Makefile is unable to cross compile the testptp program.
In contrast, the deleted makefile was able to do this just fine.

This patch fixes the regression by restoring the original makefile.
Signed-off-by: NRichard Cochran <richardcochran@gmail.com>
Acked-by: NPeter Foley <pefoley2@pefoley.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch add a case with CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y.
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Add missing explanation about CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF=y case.
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Acked-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Document the overlay filesystem.
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>

Add a new inode operation i_op->dentry_open().  This is for stacked filesystems
that want to return a struct file from a different filesystem.
Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>

Commit 75897d60 (hugetlb: allow sticky directory mount option) added
support for mounting hugetlbfs with sticky option set, like /tmp is
usually mounted, but forgot to document that.
Acked-by: NKen Chen <kenchen@google.com>
Signed-off-by: NKirill Smelkov <kirr@nexedi.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

I've got a harmless warning when running make cleandocs on an already
cleaned tree:
  Documentation/DocBook/media/Makefile:28: recipe for target 'cleanmediadocs' failed
  make[1]: [cleanmediadocs] Error 1 (ignored)

Suppress this by passing -f to rm.
Acked-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

vdso_standalone_test_x86 needs -lgcc_s to build succesfully on 32bit.
Signed-off-by: NPeter Foley <pefoley2@pefoley.com>
[ Fixed missing separator issue reported by Paul Bolle <pebolle@tiscali.nl> ]
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

When posting a patch series that includes both code implementing a
Device Tree binding and its associated documentation, the DT docs
should come in the series before the implementation.

This not only avoids checkpatch.pl to complain about undocumented
bindings but also makes the review process easier.

Document this convention since it may not be obvious.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Acked-by: NMark Rutland <mark.rutland@arm.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Correct a sentence in Documentation/ABI/testing/sysfs-ibft.
Signed-off-by: NWANG Chao <chaowang@redhat.com>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>

Fix media DocBook build errors by re-adding the orderedlist tag
and putting back the section tags lost during merge.
Reported-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NVincent Palatin <vpalatin@chromium.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

Signed-off-by: NCarlo Caione <carlo@caione.org>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Exynos7 SoC has a Watchdog for Atlas (A57) cores
This patch adds support for the Atlas watchdog.
Signed-off-by: NNaveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The Qualcomm Krait Processor Sub-system (KPSS) contains one or more
instances of the WDT.  Provide documentation on how to describe these in
the device tree.
Signed-off-by: NJosh Cartwright <joshc@codeaurora.org>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add cadence-wdt bindings documentation.
Signed-off-by: NHarini Katakam <harinik@xilinx.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Signed-off-by: NXiubo Li <Li.Xiubo@freescale.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

There is no swapper_pgd_dir, it meant swapper_pg_dir.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>

I forgot to update Documentation/*.txt
Signed-off-by: NBoaz Harrosh <ooo@electrozaur.com>

Changelog is in git history, no need to have a copy in the documentation.
Signed-off-by: NAnton Altaparmakov <anton@tuxera.com>

This DTS has support for the Sony Xperia Z1 phone (codenamed Honami).
This first version of the DTS supports just a serial console.
Signed-off-by: NTim Bird <tim.bird@sonymobile.com>
Tested-by: NKevin Hilman <khilman@linaro.org>
Signed-off-by: NKumar Gala <galak@codeaurora.org>

This patch adds the I2C/SMBus Device IDs for the Intel Sunrise Point PCH.
Signed-off-by: NJames Ralston <james.d.ralston@intel.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

I2C drivers for hix5hd2 soc series, including following chipset
Hi3716CV200, Hi3719CV100, Hi3718CV100, Hi3719MV100, Hi3718MV100.
Signed-off-by: NWei Yan <sledge.yanwei@huawei.com>
Signed-off-by: NZhangfei Gao <zhangfei.gao@linaro.org>
[wsa: folded dt docs into this patch]
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Listing specific events doesn't actually help us at all here because:
 - these events actually vary between different ppc processors, they
   aren't garunteed to be present.
 - the documentation of the (generic) file contents is now superceded by the
   docs for arbitrary event file contents.
Signed-off-by: NCody P Schafer <dev@codyps.com>
Signed-off-by: NSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <michaele@au1.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1412143402-26061-5-git-send-email-sukadev@linux.vnet.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

Add documentation for the <event>, <event>.scale, and <event>.unit
files in sysfs.

	<event>.scale and <event>.unit were undocumented.
	<event> was previously documented only for specific powerpc pmu events.
Signed-off-by: NCody P Schafer <dev@codyps.com>
Signed-off-by: NSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Ellerman <michaele@au1.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1412143402-26061-4-git-send-email-sukadev@linux.vnet.ibm.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

sgtl5000 has two required supplies: VDDA and VDDIO and one optional supply:
VDDD, so document this properly.

Not passing VDDA and VDDIO prevents the driver to probe successfully.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NMark Brown <broonie@kernel.org>