linux/drivers
Sergey Yanovich dfc657b133 drivers/rtc/rtc-ds1302.c: handle write protection
This chip has a control register and can prevent altering saved clock.
Without this patch we could have:

(arm)root@pac14:~# date
Tue May 21 03:08:27 MSK 2013
(arm)root@pac14:~# /etc/init.d/hwclock.sh show
Tue May 21 11:13:58 2013  -0.067322 seconds
(arm)root@pac14:~# /etc/init.d/hwclock.sh stop
[info] Saving the system clock.
[info] Hardware Clock updated to Tue May 21 03:09:01 MSK 2013.
(arm)root@pac14:~# /etc/init.d/hwclock.sh show
Tue May 21 11:14:15 2013  -0.624272 seconds

The patch enables write access to rtc before the driver tries to write
time and re-disables when time data is written.

Signed-off-by: Sergey Yanovich <ynvich@gmail.com>
Acked-by: Marc Zyngier <maz@misterjones.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Sachin Kamat <sachin.kamat@linaro.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 16:07:59 -07:00
..
accessibility
acpi
amba
ata
atm
auxdisplay
base
bcma
block drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
bluetooth
bus
cdrom
char
clk
clocksource
connector
cpufreq
cpuidle
crypto
dca
devfreq
dio
dma drivers/dma: remove unused support for MEMSET operations 2013-07-03 16:07:42 -07:00
edac
eisa
extcon
firewire
firmware dmi: add support for exact DMI matches in addition to substring matching 2013-07-03 16:07:42 -07:00
fmc
gpio
gpu radeon: remove redundant __list_for_each definition from mkregtable.c 2013-07-03 16:07:43 -07:00
hid
hsi
hv
hwmon drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
hwspinlock
i2c
ide
idle
iio
infiniband
input
iommu
ipack
irqchip
isdn
leds
lguest
macintosh
mailbox
md
media drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
memory
memstick
message
mfd
misc drivers/misc/sgi-gru/grufault.c: fix a sanity test in gru_set_context_option() 2013-07-03 16:07:42 -07:00
mmc
mtd drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
net ipw2200: convert __list_for_each usage to list_for_each 2013-07-03 16:07:43 -07:00
nfc
ntb
nubus
of
oprofile
parisc
parport
pci
pcmcia
pinctrl
platform
pnp
power
pps
ps3
ptp
pwm
rapidio
regulator
remoteproc
reset
rpmsg
rtc drivers/rtc/rtc-ds1302.c: handle write protection 2013-07-03 16:07:59 -07:00
s390
sbus
scsi drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
sfi
sh
sn
spi drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
ssb
ssbi
staging drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
target
tc
thermal
tty
uio
usb drivers: avoid parsing names as kthread_run() format strings 2013-07-03 16:07:41 -07:00
uwb
vfio
vhost
video backlight: convert from legacy pm ops to dev_pm_ops 2013-07-03 16:07:43 -07:00
virt
virtio
vlynq
vme
w1
watchdog
xen
zorro
Kconfig
Makefile