linux.git/drivers/rtc, branch v3.4-rc5

drivers/rtc/rtc-ds1307.c: fix BUG shown with lock debugging enabled

2012-04-26T04:26:34+00:00

Add struct bin_attribute initialization to fix the following bug:

rtc-ds1307 3-0068: rtc core: registered ds1307 as rtc0
BUG: key cfb14fcc not in .data!
------------[ cut here ]------------
WARNING: at kernel/lockdep.c:2986 sysfs_add_file_mode+0x84/0xdc()
Modules linked in:
[] (unwind_backtrace+0x0/0xf8) from [] (warn_slowpath_common+0x4c/0x64)
[] (warn_slowpath_common+0x4c/0x64) from [] (warn_slowpath_null+0x1c/0x24)
[] (warn_slowpath_null+0x1c/0x24) from [] (sysfs_add_file_mode+0x84/0xdc)
[] (sysfs_add_file_mode+0x84/0xdc) from [] (ds1307_probe+0x5e4/0x6ac)
[] (ds1307_probe+0x5e4/0x6ac) from [] (i2c_device_probe+0xdc/0x108)
[] (i2c_device_probe+0xdc/0x108) from [] (driver_probe_device+0x90/0x210)
[] (driver_probe_device+0x90/0x210) from [] (__driver_attach+0x94/0x98)
[] (__driver_attach+0x94/0x98) from [] (bus_for_each_dev+0x50/0x7c)
[] (bus_for_each_dev+0x50/0x7c) from [] (bus_add_driver+0x184/0x244)
[] (bus_add_driver+0x184/0x244) from [] (driver_register+0x78/0x12c)
[] (driver_register+0x78/0x12c) from [] (i2c_register_driver+0x2c/0xb4)
[] (i2c_register_driver+0x2c/0xb4) from [] (do_one_initcall+0x34/0x178)
[] (do_one_initcall+0x34/0x178) from [] (kernel_init+0xdc/0x194)
[] (kernel_init+0xdc/0x194) from [] (kernel_thread_exit+0x0/0x8)

Since commit 6992f5334995af4 ("sysfs: Use one lockdep class per sysfs
attribute") this initialization is required.

Reported-by: Stefano Babic 
Tested-by: Stefano Babic 
Signed-off-by: Anatolij Gustschin 
Cc: Alessandro Zummo 
Cc: Stefano Babic 
Cc: Eric W. Biederman 
Cc: Greg Kroah-Hartman 
Acked-by: Wolfram Sang 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: enable clock on all ST variants

2012-04-12T20:12:12+00:00

The ST variants of the PL031 all require bit 26 in the control register
to be set before they work properly.  Discovered this when testing on
the Nomadik board where it would suprisingly just stand still.

Signed-off-by: Linus Walleij 
Cc: Mian Yousaf Kaukab 
Cc: Alessandro Rubini 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-twl.c: use static register while reading time

2012-04-12T20:12:12+00:00

RTC stores time and date in several registers.  Due to the fact that
these registers can't be read instantaneously, there is a chance that
reading from counting registers gives an error of one minute, one hour,
one day, etc.

To address this issue, the RTC has hardware support to copy the RTC
counting registers to static shadowed registers.  The current
implementation does not use this feature, and in a stress test, we can
reproduce this error at a rate of around two times per 300000 readings.

Fix the implementation to ensure that the right snapshot of time is
captured.

Signed-off-by: Konstantin Shlyakhovoy 
Signed-off-by: Nishanth Menon 
Cc: Alessandro Zummo 
Cc: Benoit Cousson 
Cc: linux-omap 
Acked-by: Mykola Oleksiienko 
Acked-by: Oleksandr Dmytryshyn 
Acked-by: Graeme Gregory 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-s3c.c: add placeholder for driver private data

2012-04-12T20:12:12+00:00

Driver data field is a pointer, hence assigning that to an integer results
in compilation warnings.

Fixes following compilation warnings:

  drivers/rtc/rtc-s3c.c: In function `s3c_rtc_get_driver_data':
  drivers/rtc/rtc-s3c.c:452:3: warning: return makes integer from pointer without a cast [enabled by default]
  drivers/rtc/rtc-s3c.c: At top level:
  drivers/rtc/rtc-s3c.c:674:3: warning: initialization makes pointer from integer without a cast [enabled by default]
  drivers/rtc/rtc-s3c.c:674:3: warning: (near initialization for `s3c_rtc_dt_match[1].data') [enabled by default]
  drivers/rtc/rtc-s3c.c:677:3: warning: initialization makes pointer from integer without a cast [enabled by default]
  drivers/rtc/rtc-s3c.c:677:3: warning: (near initialization for `s3c_rtc_dt_match[2].data') [enabled by default]
  drivers/rtc/rtc-s3c.c:680:3: warning: initialization makes pointer from integer without a cast [enabled by default]
  drivers/rtc/rtc-s3c.c:680:3: warning: (near initialization for `s3c_rtc_dt_match[3].data') [enabled by default]

Signed-off-by: Tushar Behera 
Cc: Heiko Stuebner 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-s3c.c: fix compilation error

2012-04-12T20:12:12+00:00

Fix this error:

  drivers/rtc/rtc-s3c.c: At top level:
  drivers/rtc/rtc-s3c.c:671:3: error: request for member `data' in something not a structure or union
  drivers/rtc/rtc-s3c.c:674:3: error: request for member `data' in something not a structure or union
  drivers/rtc/rtc-s3c.c:677:3: error: request for member `data' in something not a structure or union
  drivers/rtc/rtc-s3c.c:680:3: error: request for member `data' in something not a structure or union

Signed-off-by: Tushar Behera 
Cc: Heiko Stuebner 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-efi.c: fix section mismatch warning

2012-04-12T20:12:12+00:00

efi_rtc_init() uses platform_driver_probe(), so there's no need to also
set efi_rtc_driver's probe member (as it won't be used anyway).  This
fixes a modpost section mismatch warning (as efi_rtc_probe() validly is
__init).

Signed-off-by: Jan Beulich 
Cc: Matthew Garrett 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

drivers/rtc/rtc-r9701.c: reset registers if invalid values are detected

2012-04-12T20:12:12+00:00

hwclock refuses to set date/time if RTC registers contain invalid
values.  Check the date/time register values at probe time and
initialize them to make hwclock happy.

Signed-off-by: Andreas Dumberger 
Signed-off-by: Anatolij Gustschin 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'akpm' (Andrew's patch-bomb)

2012-04-05T22:30:34+00:00

Merge batch of fixes from Andrew Morton:
 "The simple_open() cleanup was held back while I wanted for laggards to
  merge things.

  I still need to send a few checkpoint/restore patches.  I've been
  wobbly about merging them because I'm wobbly about the overall
  prospects for success of the project.  But after speaking with Pavel
  at the LSF conference, it sounds like they're further toward
  completion than I feared - apparently davem is at the "has stopped
  complaining" stage regarding the net changes.  So I need to go back
  and re-review those patchs and their (lengthy) discussion."

* emailed from Andrew Morton : (16 patches)
  memcg swap: use mem_cgroup_uncharge_swap fix
  backlight: add driver for DA9052/53 PMIC v1
  C6X: use set_current_blocked() and block_sigmask()
  MAINTAINERS: add entry for sparse checker
  MAINTAINERS: fix REMOTEPROC F: typo
  alpha: use set_current_blocked() and block_sigmask()
  simple_open: automatically convert to simple_open()
  scripts/coccinelle/api/simple_open.cocci: semantic patch for simple_open()
  libfs: add simple_open()
  hugetlbfs: remove unregister_filesystem() when initializing module
  drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback
  fs/xattr.c:setxattr(): improve handling of allocation failures
  fs/xattr.c:listxattr(): fall back to vmalloc() if kmalloc() failed
  fs/xattr.c: suppress page allocation failure warnings from sys_listxattr()
  sysrq: use SEND_SIG_FORCED instead of force_sig()
  proc: fix mount -t proc -o AAA

drivers/rtc/rtc-88pm860x.c: fix rtc irq enable callback

2012-04-05T22:25:50+00:00

According to 88pm860x spec, rtc alarm irq enable control is bit3 for
RTC_ALARM_EN, so fix it.

Signed-off-by: Jett.Zhou 
Cc: Axel Lin 
Cc: Haojian Zhuang 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2012-03-30T01:02:10+00:00

Pull "ARM: cleanups of io includes" from Olof Johansson:
 "Rob Herring has done a sweeping change cleaning up all of the
  mach/io.h includes, moving some of the oft-repeated macros to a common
  location and removing a bunch of boiler plate.  This is another step
  closer to a common zImage for multiple platforms."

Fix up various fairly trivial conflicts ( removal vs changes
around it, tegra localtimer.o is *still* gone, yadda-yadda).

* tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (29 commits)
  ARM: tegra: Include assembler.h in sleep.S to fix build break
  ARM: pxa: use common IOMEM definition
  ARM: dma-mapping: convert ARCH_HAS_DMA_SET_COHERENT_MASK to kconfig symbol
  ARM: __io abuse cleanup
  ARM: create a common IOMEM definition
  ARM: iop13xx: fix missing declaration of iop13xx_init_early
  ARM: fix ioremap/iounmap for !CONFIG_MMU
  ARM: kill off __mem_pci
  ARM: remove bunch of now unused mach/io.h files
  ARM: make mach/io.h include optional
  ARM: clps711x: remove unneeded include of mach/io.h
  ARM: dove: add explicit include of dove.h to addr-map.c
  ARM: at91: add explicit include of hardware.h to uncompressor
  ARM: ep93xx: clean-up mach/io.h
  ARM: tegra: clean-up mach/io.h
  ARM: orion5x: clean-up mach/io.h
  ARM: davinci: remove unneeded mach/io.h include
  [media] davinci: remove includes of mach/io.h
  ARM: OMAP: Remove remaining includes for mach/io.h
  ARM: msm: clean-up mach/io.h
  ...