Commit graph

2125 commits

Author SHA1 Message Date
Mitja Spes
5f1b2f7764 rtc: abx80x: fix RTC write bit
Fix RTC write bit as per application manual

Cc: stable@vger.kernel.org # 4.1+
Signed-off-by: Mitja Spes <mitja@lxnav.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:31 +02:00
Fabio Estevam
8a67e93153 rtc: ab8500: Add a sentinel to ab85xx_rtc_ids[]
Add a sentinel to ab85xx_rtc_ids[] in order to fix the following error:

drivers/rtc/rtc-ab8500: struct platform_device_id is 24 bytes.  The last of 2 is:
0x61 0x62 0x38 0x35 0x34 0x30 0x2d 0x72 0x74 0x63 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x8c
FATAL: drivers/rtc/rtc-ab8500: struct platform_device_id is not terminated with a NULL entry!

Reported-by: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Reported-by: Olof's autobuilder <build@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:31 +02:00
Fabio Estevam
d78908d971 rtc: ds1374: Remove unused variable
Remove unused variable 'res' and fix the following build warning:

drivers/rtc/rtc-ds1374.c:667:6: warning: unused variable 'res' [-Wunused-variable]

Reported-by: Olof's autobuilder <build@lixom.net>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:22 +02:00
Javier Martinez Canillas
73798d5c41 rtc: Fix module autoload for OF platform drivers
These platform drivers have a OF device ID table but the OF module
alias information is not created so module autoloading won't work.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:22 +02:00
Javier Martinez Canillas
63074cc3d4 rtc: Fix module autoload for rtc-{ab8500,max8997,s5m} drivers
These platform drivers have a platform device ID table but the module
alias information is not created so module autoloading will not work.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:21 +02:00
Keerthy
399cf0f63f rtc: omap: Add external clock enabling support
Configure the clock source to external clock if available.
External clock is preferred as it can be ticking during suspend.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:21 +02:00
Keerthy
532409aa1b rtc: omap: Add internal clock enabling support
The rtc can be clocked by an internal 32K clock. Adding the support
to enable the same.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:20 +02:00
Joonyoung Shim
ff02c0444b rtc: s5m: fix to update ctrl register
According to datasheet, the S2MPS13X and S2MPS14X should update write
buffer via setting WUDR bit to high after ctrl register is written.

If not, ALARM interrupt of rtc-s5m doesn't happen first time when i use
tools/testing/selftests/timers/rtctest.c test program and hour format is
used to 12 hour mode in Odroid-XU3 board.

One more issue is the RTC doesn't keep time on Odroid-XU3 board when i
turn on board after power off even if RTC battery is connected. It can
be solved as setting WUDR & RUDR bits to high at the same time after
RTC_CTRL register is written. It's same with condition of only writing
ALARM registers, so this is for only S2MPS14 and we should set WUDR &
A_UDR bits to high on S2MPS13.

I can't find any reasonable description about this like fix from
datasheet, but can find similar codes from rtc driver source of
hardkernel kernel and vendor kernel.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: <stable@vger.kernel.org> # v3.16
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:19 +02:00
Suneel Garapati
11143c19eb rtc: add xilinx zynqmp rtc driver
Add support for RTC controller found on Xilinx Zynq Ultrascale+ MPSoC
platform.

Signed-off-by: Suneel Garapati <suneel.garapati@xilinx.com>
Acked-by: Moritz Fischer <moritz.fischer@ettus.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:19 +02:00
Bibek Basu
a038c3aa9f rtc: as3722: correct month value
The RTC month value is 1-indexed, but the kernel assumes it is 0-indexed.
This may result in the RTC not rolling over correctly.

Signed-off-by: Bibek Basu <bbasu@nvidia.com>
Signed-off-by: Felix Janda <felix.janda@posteo.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:18 +02:00
Rob Herring
90d0ae8e95 rtc: sa1100/pxa: convert to run-time register mapping
SA1100 and PXA differ only in register offsets which are currently
hardcoded in a machine specific header. Some arm64 platforms (PXA1928)
have this RTC block as well (and not the PXA270 variant).

Convert the driver to use ioremap and set the register offsets dynamically.
Since we are touching all the register accesses, convert them all to
readl_relaxed/writel_relaxed.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: rtc-linux@googlegroups.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:16 +02:00
Rob Herring
3cdf4ad963 rtc: pxa: convert to use shared sa1100 functions
Currently, the rtc-sa1100 and rtc-pxa drivers co-exist as rtc-pxa has a
superset of functionality. Having 2 drivers sharing the same memory
resource is not allowed by the driver model if resources are properly
declared. This problem was avoided by not adding memory resources to the
SA1100 RTC driver, but that prevents clean-up of the SA1100 driver.

This commit converts the PXA RTC to use the exported SA1100 RTC
functions. Now the sa1100-rtc and pxa-rtc devices are mutually
exclusive, so we must remove the sa1100-rtc from pxa27x and pxa3xx.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: rtc-linux@googlegroups.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:15 +02:00
Rob Herring
8c0961ba7c rtc: sa1100: prepare to share sa1100_rtc_ops
Factor out the RTC initialization from the platform device specific
parts in order to share the RTC device ops with other drivers.
Specifically, it will be shared with rtc-pxa driver.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: rtc-linux@googlegroups.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:37:15 +02:00
Wang Dongsheng
dc2280ebf4 rtc: ds3232: fix WARNING trace in resume function
If ds3232 work on some platform that is not implementing
irq_set_wake, ds3232 will get a WARNING trace in resume.
So fix ds3232->suspended state to false when irq_set_irq_wake
return error.

WARNING: CPU: 0 PID: 729 at kernel/irq/manage.c:604 irq_set_irq_wake+0x4b/0x8c()
Unbalanced IRQ 201 wake disable
Modules linked in:
CPU: 0 PID: 729 Comm: sh Not tainted 3.12.19-rt30+ #25
[<800107d9>] (unwind_backtrace+0x1/0x88) from [<8000e4ef>] (show_stack+0xb/0xc)
[<8000e4ef>] (show_stack+0xb/0xc) from [<802b5fa9>] (dump_stack+0x4d/0x60)
[<802b5fa9>] (dump_stack+0x4d/0x60) from [<800186dd>] (warn_slowpath_common+0x45/0x64)
[<800186dd>] (warn_slowpath_common+0x45/0x64) from [<80018717>] (warn_slowpath_fmt+0x1b/0x24)
[<80018717>] (warn_slowpath_fmt+0x1b/0x24) from [<8003a8d3>] (irq_set_irq_wake+0x4b/0x8c)
[<8003a8d3>] (irq_set_irq_wake+0x4b/0x8c) from [<80204fcb>] (ds3232_resume+0x2d/0x36)
[<80204fcb>] (ds3232_resume+0x2d/0x36) from [<801954c7>] (dpm_run_callback.isra.13+0xb/0x28)
[<801954c7>] (dpm_run_callback.isra.13+0xb/0x28) from [<80195b1b>] (device_resume+0x7b/0xa2)
[<80195b1b>] (device_resume+0x7b/0xa2) from [<80195f0f>] (dpm_resume+0xbb/0x19c)
[<80195f0f>] (dpm_resume+0xbb/0x19c) from [<801960d9>] (dpm_resume_end+0x9/0x12)
[<801960d9>] (dpm_resume_end+0x9/0x12) from [<80037e1d>] (suspend_devices_and_enter+0x17d/0x1d0)
[<80037e1d>] (suspend_devices_and_enter+0x17d/0x1d0) from [<80037ee1>] (pm_suspend+0x71/0x128)
[<80037ee1>] (pm_suspend+0x71/0x128) from [<80037449>] (state_store+0x6d/0x80)
[<80037449>] (state_store+0x6d/0x80) from [<800af4d5>] (sysfs_write_file+0x9f/0xde)
[<800af4d5>] (sysfs_write_file+0x9f/0xde) from [<8007a437>] (vfs_write+0x7b/0x104)
[<8007a437>] (vfs_write+0x7b/0x104) from [<8007a7f7>] (SyS_write+0x27/0x48)
[<8007a7f7>] (SyS_write+0x27/0x48) from [<8000c121>] (ret_fast_syscall+0x1/0x44)

Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 19:36:21 +02:00
Joonyoung Shim
27b15e31db rtc: s3c: remove unnecessary NULL assignment
It's unnecessary the code that assigns info->rtc_clk to NULL in
s3c_rtc_remove.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:13 +02:00
Joonyoung Shim
7f23a93661 rtc: s3c: add missing clk control
It's missed to call clk_unprepare() about info->rtc_src_clk in
s3c_rtc_remove and to call clk_disable_unprepare about info->rtc_clk in
error routine of s3c_rtc_probe.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:13 +02:00
Joonyoung Shim
1fb1c35f56 rtc: s3c: fix disabled clocks for alarm
The clock enable/disable codes for alarm have been removed from
commit 24e1455493 ("drivers/rtc/rtc-s3c.c: delete duplicate clock
control") and the clocks are disabled even if alarm is set, so alarm
interrupt can't happen.

The s3c_rtc_setaie function can be called several times with 'enabled'
argument having same value, so it needs to check whether clocks are
enabled or not.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Cc: <stable@vger.kernel.org> # v4.1
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:13 +02:00
Alexandre Belloni
80e274e96e rtc: at91sam9: remove useless include
Definitions from linux/platform_data/atmel.h are not used, remove the
include.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:13 +02:00
Alexandre Belloni
1955f213a6 rtc: at91sam9: include linux/of.h
This driver is using device tree but is not including of.h

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Nadav Haklai
0c6e718389 rtc: armada38x: Align RTC set time procedure with the official errata
According to the Armada38x functional errata FE-3124064, writing to
the RTC TIME register may fail. As a workaround, after writing to RTC
TIME register, issue a dummy write of 0x0 twice to the RTC Status
register.  This is the updated implementation of the Errata that
eliminates the need of the long 100ms delay during the RTC set time
procedure.

[gregory.clement@free-electrons.com]: removed the mutex and use the
spinlock again

Signed-off-by: Nadav Haklai <nadavh@marvell.com>
Reviewed-by: Neta Zur Hershkovits <neta@marvell.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Alexandre Belloni
efbbb4fd6b rtc: rx8025: check time validity when necessary
Check time validity when reading time as this is when we need to know.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Alexandre Belloni
5c66e1e0b7 rtc: rx8025: fix RX8025_BIT_CTRL2_CTFG initialization
RX8025_BIT_CTRL2_CTFG was set to 0 only when it was already 0.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Alexandre Belloni
4b33d36b67 rtc: rx8025: remove useless initialization
irq_freq is already initialized to 1 in rtc_device_register()

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Alexandre Belloni
8c4a4467cd rtc: rx8025: reset validity when setting time
Wait for the user to set the time to reset the validity bits. Until then,
the time may be invalid.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Alexandre Belloni
a27c7bf657 rtc: rx8025: fix rx8025_init_client()
rx8025_init_client is modifying ctrl[0] and writing it to RX8025_REG_CTRL2
but ctrl[0] is actually RX8025_REG_CTRL1.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Alexandre Belloni
8a06513df5 rtc: rx8025: continue without alarm when irq request fails
Instead of bailing out, disable alarms and continue when
devm_request_threaded_irq() fails. This allows to still provide some
functionality.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Alexandre Belloni
fd9061fb49 rtc: rx8025: cleanup accessors
Remove useless error messages, at that point, the user already knows
something went wrong but will not be able to do anything about it anyway.
It is also highly unlikely that some registers are readable/writable
but not some other ones.

Also, transform rx8025_read_reg to be more resemblant to
i2c_smbus_read_byte_data()

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:12 +02:00
Alexandre Belloni
6f0a8cfebb rtc: rx8025: don't reset the time
Stop setting the time to epoch when it is invalid. The proper way to handle
that is to return an error when it is invalid instead of returning an
incorrect value.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:11 +02:00
Alexandre Belloni
2e10e74df7 rtc: rx8025: fix transfer mode
The datasheet specifies that transfer mode must be 0 for write and either
0x4 (simplified read) or 0 (standard read). 0x8 is not specified, use
standard mode.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:11 +02:00
Alexandre Belloni
32672c5595 rtc: rx8025: only handle dates between 2000 and 2099
The hardware is only capable of handling dates between 2000 and 2099,
enforce that.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:11 +02:00
Alexandre Belloni
2ddd18693c rtc: rx8025: use BIT()
Use BIT() instead of hand coding.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:11 +02:00
Alexandre Belloni
dbcce7cf1e rtc: rx8025: remove useless probe error message
It is useless to print a message when probe fails as the user is already
aware that it failed.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:11 +02:00
Alexandre Belloni
f0b63a1d5a rtc: rx8025: switch to managed irq allocation
Use devm_request_threaded_irq() so it is not necessary to call free_irq()
explicitly.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:11 +02:00
Alexandre Belloni
b6a57c955c rtc: rx8025: Convert to threaded IRQ
The driver currently emulates the concept of threaded IRQ using a
workqueue, switch to threaded IRQ instead.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:11 +02:00
Alexandre Belloni
15d3bdc23e rtc: rx8025: remove useless headers and reorder them
Remove the useless includes and order the remaining ones alphabetically.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:11 +02:00
Vladimir Zapolskiy
824625d392 rtc: tx4939: clean up tx4939_rtc_nvram_read()/tx4939_rtc_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
ecc663c3d0 rtc: stk17ta8: clean up stk17ta8_nvram_read()/stk17ta8_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
d1cf4bdee8 rtc: rp5c01: clean up rp5c01_nvram_read()/rp5c01_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
99be3e371b rtc: m48t59: clean up m48t59_nvram_read()/m48t59_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Spinlock acquisition/release is moved out of the loop body to get
atomic states of NVRAM reading and writing operations.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
c472d7ded2 rtc: ds1742: clean up ds1742_nvram_read()/ds1742_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
a9118d77b3 rtc: ds1553: clean up ds1553_nvram_read()/ds1553_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
8ccba14233 rtc: ds1511: clean up ds1511_nvram_read()/ds1511_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

The change enables burst mode of access to SRAM for any read()/write()
operations, it is worth to mention that this may influence on
userspace, for instance prior to the change

  read(fd, buf, 1);
  read(fd, buf + 1, 1);

and

  read(fd, buf, 2);

sequences of syscalls over DS1511's sysfs "nvram" fd led to different
DS1511 state changes and/or buf content, if some userspace applications
are written specifically for DS1511 and exploit this strange
"feature", they may be impacted.

Also the change corrects NVRAM size accessible to userspace from 255
bytes to 256 bytes.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
f4843b19d2 rtc: ds1343: clean up ds1343_nvram_read()/ds1343_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
ca7c14d3a1 rtc: ds1307: clean up ds1307_nvram_read()/ds1307_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:10 +02:00
Vladimir Zapolskiy
273e03041e rtc: ds1305: clean up ds1305_nvram_read()/ds1305_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller size in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:09 +02:00
Vladimir Zapolskiy
a3781639e1 rtc: cmos: clean up cmos_nvram_read()/cmos_nvram_write()
The change removes redundant sysfs binary file boundary checks, since
this task is already done on caller side in fs/sysfs/file.c

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:09 +02:00
Alexandre Belloni
11f67a8bbf rtc: at91rm9200: get and use slow clock
Commit dca1a4b5ff ("clk: at91: keep slow clk enabled to prevent system
hang") added a workaround for the slow clock as it is not properly handled
by its users.

Get and use the slow clock as it is necessary for the at91rm9200 rtc.

Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:09 +02:00
kbuild test robot
202cc98acf rtc: gemini: fix ptr_ret.cocci warnings
drivers/rtc/rtc-gemini.c:151:1-3: WARNING: PTR_ERR_OR_ZERO can be used

 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:09 +02:00
viresh kumar
e7cba884af rtc: Drop (un)likely before IS_ERR(_OR_NULL)
IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag and there
is no need to do that again from its callers. Drop it.

gemini driver was using likely() for a failure case while the rtc driver
is getting registered. That looks wrong and it should really be
unlikely. But because we are killing all the unlikely() flags, lets kill
that too.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Hans Ulli Kroll <ulli.kroll@googlemail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2015-09-05 13:19:09 +02:00
Alexandre Belloni
74000eb14a rtc: at91rm9200: sort headers alphabetically
Sort included headers alphabetically.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-09-05 13:19:09 +02:00