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linux-next/drivers
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Lokesh Vutla 9c28bd07c2 drivers/rtc/rtc-omap.c: unlock and lock rtc registers before and after register writes 
RTC module contains a kicker mechanism to prevent any spurious writes from
changing the register values.  This mechanism requires two MMR writes to
the KICK0 and KICK1 registers with exact data values before the kicker
lock mechanism is released.

Currently the driver release the lock in the probe and leaves it enabled
until the rtc driver removal.  This eliminates the idea of preventing
spurious writes when RTC driver is loaded.  So implement rtc lock and
unlock functions before and after register writes.

This is as advised by Paul to implement lock and unlock functions in the
driver and not to unlock and leave it in probe.  The same discussion can
be seen here:
http://www.mail-archive.com/linux-omap%40vger.kernel.org/msg111588.html

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17 09:04:02 -04:00
..
accessibility
acpi Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
amba ARM: 8334/1: amba: tegra-ahb: detect and correct bogus base address 2015-04-02 10:03:55 +01:00
android
ata Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
atm
auxdisplay
base power: wakeup: remove use of seq_printf return value 2015-04-15 16:35:24 -07:00
bcma
block Merge branch 'akpm' (patches from Andrew) 2015-04-15 16:39:15 -07:00
bluetooth Bluetooth: btusb: Use proper data structures for Intel vendor events 2015-04-09 10:42:18 +03:00
bus
cdrom
char Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-15 13:22:56 -07:00
clk clk: bcm/kona: use DIV_ROUND_CLOSEST_ULL() 2015-04-17 09:03:55 -04:00
clocksource ARM, clocksource/drivers: Provide read_boot_clock64() and read_persistent_clock64() and use them 2015-04-03 08:18:23 +02:00
connector
coresight
cpufreq intel_pstate: Knights Landing support 2015-04-11 02:13:29 +02:00
cpuidle cpuidle: menu: use DIV_ROUND_CLOSEST_ULL() 2015-04-17 09:03:55 -04:00
crypto crypto: sahara - fix AES descriptor create 2015-04-08 22:20:06 +08:00
dca
devfreq PM / devfreq: tegra: Register governor on module init 2015-03-31 13:17:15 +09:00
dio
dma sound updates for 4.1-rc1 2015-04-15 15:41:41 -07:00
dma-buf
edac
eisa
extcon
firewire
firmware Merge branch 'core-efi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-04-13 10:22:30 -07:00
fmc
gpio Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
gpu kernel.h: implement DIV_ROUND_CLOSEST_ULL 2015-04-17 09:03:55 -04:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2015-04-14 18:25:15 -07:00
hsi HSI: cmt_speech: fix error return code 2015-04-05 14:45:27 +02:00
hv
hwmon hwmon: (w83795) use find_closest_descending() in pwm_freq_to_reg() 2015-04-17 09:03:55 -04:00
hwspinlock
i2c Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
ide Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
idle Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
iio Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
infiniband Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-14 15:31:03 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2015-04-14 18:25:15 -07:00
iommu Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
ipack
irqchip irqchip core change for v4.1 (round 3) 2015-04-11 11:17:28 +02:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-04-15 09:00:47 -07:00
leds leds: Don't treat the LED name as a format string 2015-03-30 14:26:32 -07:00
lguest lguest: now needs PCI_DIRECT. 2015-04-01 10:29:05 -07:00
macintosh
mailbox
mcb
md md/raid0: fix bug with chunksize not a power of 2. 2015-04-10 15:36:31 +10:00
media media: cxd2820r: use DIV_ROUND_CLOSEST_ULL() 2015-04-17 09:03:56 -04:00
memory
memstick
message
mfd == Changes to existing drivers == 2015-04-14 17:29:55 -07:00
misc Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-14 15:31:03 -07:00
mmc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
mtd This pull request includes the following UBI/UBIFS changes: 2015-04-15 13:43:40 -07:00
net Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-15 13:22:56 -07:00
nfc NFC: logging neatening 2015-04-07 12:05:12 +02:00
ntb
nubus
of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-04-15 09:00:47 -07:00
oprofile
parisc parisc: remove use of seq_printf return value 2015-04-15 16:35:25 -07:00
parport
pci PCI changes for the v4.1 merge window: 2015-04-13 15:45:47 -07:00
pcmcia
phy USB patches for 4.1-rc1 2015-04-13 17:07:21 -07:00
pinctrl This is the bulk of pin control changes for the v4.1 development 2015-04-14 17:58:15 -07:00
platform Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
pnp Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
power power: twl4030_madc_battery: Add missing MODULE_ALIAS 2015-04-06 19:39:57 +02:00
powercap powercap / RAPL: mark rapl_ids array as __initconst 2015-04-11 02:21:15 +02:00
pps
ps3
ptp ptp: remove 32 bit get/set methods. 2015-03-31 12:01:19 -04:00
pwm
rapidio
ras
regulator == Changes to existing drivers == 2015-04-14 17:29:55 -07:00
remoteproc
reset
rpmsg
rtc drivers/rtc/rtc-omap.c: unlock and lock rtc registers before and after register writes 2015-04-17 09:04:02 -04:00
s390 s390: remove use of seq_printf return value 2015-04-15 16:35:25 -07:00
sbus drivers/sbus/char/envctrl.c: ignore orderly_poweroff return value 2015-04-15 16:35:23 -07:00
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2015-04-15 09:00:47 -07:00
sfi
sh
sn
soc
spi Merge remote-tracking branches 'spi/topic/spidev' and 'spi/topic/spidev-test' into spi-next 2015-04-11 23:09:31 +01:00
spmi
ssb ssb: add delay after PCI reset to fix SoC reboots 2015-04-07 20:18:10 +03:00
staging Merge branch 'akpm' (patches from Andrew) 2015-04-15 16:39:15 -07:00
target iscsi target: fix oops when adding reject pdu 2015-04-10 12:33:55 -07:00
tc
thermal drivers: thermal: st: remove several sparse warnings 2015-04-07 13:43:28 -07:00
thunderbolt
tty Power management and ACPI updates for v4.1-rc1 2015-04-14 20:21:54 -07:00
uio
usb Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-15 13:22:56 -07:00
uwb
vfio vfio-pci: Fix use after free 2015-04-08 08:11:51 -06:00
vhost new helper: msg_data_left() 2015-04-11 15:53:35 -04:00
video == Changes to existing drivers == 2015-04-14 17:54:22 -07:00
virt
virtio
vlynq
vme
w1
watchdog Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2015-04-14 20:51:44 -07:00
xen cleancache: forbid overriding cleancache_ops 2015-04-14 16:49:03 -07:00
zorro
Kconfig
Makefile