We need to check for negative values before doing the swab16() for the
error handling to work.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>

Factor out some boilerplate code for i2c driver registration
into module_i2c_driver.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Cc: Woogyom Kim <milo.kim@ti.com>
Cc: Daniel Jeong <daniel.jeong@ti.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Peter Edwards <sweetlilmre@gmail.com>
Acked-by: NMilo(Woogyom) Kim <milo.kim@ti.com>
Acked-by: NRhyland Klein <rklein@nvidia.com>
Acked-by: NRyan Mallon <rmallon@gmail.com>
Signed-off-by: NAnton Vorontsov <anton.vorontsov@linaro.org>

I no longer work at Bluewater Systems. Update my email address accordingly. I
have deleted my email address from C files rather than change it. This
was suggested by several people, since the commit from my new email
address will cause scripts/get_maintainer.pl to function properly. I
have not added the .mailmap entry as suggested by Joe because I think
it is no longer necessary if I touch all the files which had my name
in them.
Signed-off-by: NRyan Mallon <rmallon@gmail.com>
Cc: Andre Renaud <andre@bluewatersys.com>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Andrew Victor <avictor.za@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Anton Vorontsov <cbou@mail.ru>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Liam Girdwood <lrg@ti.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Joe Perches <joe@perches.com>
Cc: Jesper Juhl <jj@chaosbits.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: trivial@kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: NJesper Juhl <jj@chaosbits.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The device table is required to load modules based on modaliases.
After adding the MODULE_DEVICE_TABLE, below entries will be added to
modules.alias:
alias i2c:ds2786 ds2782_battery
alias i2c:ds2782 ds2782_battery
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

Correct the unit names in the ds2782 battery driver. Changes voltage_uA
to voltage_uV and capacity_uA to capacity.
Signed-off-by: NRyan Mallon <ryan@bluewatersys.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Yulia Vilensky <vilensky@compulab.co.il>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

The ds2782_get_capacity function should return 0 on success, not the
capacity value.
Signed-off-by: NRyan Mallon <ryan@bluewatersys.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

This patch changes the name of get_current function pointer to
get_battery_current to resolve a name conflict with the get_current
macro defined in current.h.

This conflict resulted in a build-failure[1] for the sh4 arch
allyesconfig:

  drivers/power/ds2782_battery.c:216:48: error: macro "get_current"
  passed 2 arguments, but takes just

This patch fixes the issue. To be consistent the other function pointers
(_voltage,_capacity) were renamed too.
Signed-off-by: NPeter Huewe <peterhuewe@gmx.de>
Acked-by: NRyan Mallon <ryan@bluewatersys.com>
Acked-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

Constructions like 'if (id->driver_data == 1)' look quite weird.
This patch introduces 'enum ds278x_num_id', which makes things
much more understandable, i.e. 'if (id->driver_data == DS2786)'.
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>
Acked-by: NMike Rapoport <mike@compulab.co.il>

Signed-off-by: NYulia Vilensky <vilensky@compulab.co.il>
Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

Probably due to a copy & paste bug, clientdata was set again to the data
structure (which is freed immediately afterwards) when it should be
NULLed. Just remove the calls as the i2c-core does this automatically
now.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Cc: Ryan Mallon <ryan@bluewatersys.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: NTejun Heo <tj@kernel.org>
Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

This patch adds a driver for ds2782 battery devices.
Signed-off-by: NRyan Mallon <ryan@bluewatersys.com>
Signed-off-by: NAnton Vorontsov <cbouatmailru@gmail.com>