Jon Medhurst fe43390702 serial: amba-pl011: use port lock to guard control register access ... When the pl011 is being used for a console, pl011_console_write forces the control register (CR) to enable the UART for transmission and then restores this to the original value afterwards. It does this while holding the port lock. Unfortunately, when the uart is started or shutdown - say in response to userland using the serial device for a terminal - then this updates the control register without any locking. This means we can have pl011_console_write Save CR pl011_startup Initialise CR, e.g. enable receive pl011_console_write Restore old CR with receive not enabled this result is a serial port which doesn't respond to any input. A similar race in reverse could happen when the device is shutdown. We can fix these problems by taking the port lock when updating CR. Signed-off-by: Jon Medhurst <tixy@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2013-12-17 09:35:37 -08:00
..
accessibility
acpi	Merge branch 'acpica'	2013-11-27 01:03:27 +01:00
amba
ata	SCSI fixes on 20131206	2013-12-06 08:30:18 -08:00
atm	atm: idt77252: fix dev refcnt leak	2013-11-19 15:53:02 -05:00
auxdisplay
base	Revert "cpufreq: suspend governors on system suspend/hibernate"	2013-12-08 01:04:17 +01:00
bcma	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2013-11-13 17:40:34 +09:00
block	null_blk: mem garbage on NUMA systems during init	2013-12-15 12:17:16 -08:00
bluetooth
bus	Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm	2013-11-14 08:51:29 +09:00
cdrom
char	Char/Misc driver fixes for 3.13-rc3	2013-12-08 18:47:25 -08:00
clk	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-11-15 16:47:22 -08:00
clocksource	clocksource: arm_arch_timer: Hide eventstream Kconfig on non-ARM	2013-11-21 00:06:52 +01:00
connector	connector: improved unaligned access error fix	2013-11-14 17:19:20 -05:00
cpufreq	cpufreq_ at32ap-cpufreq.c: Fix section mismatch	2013-12-10 08:46:38 +01:00
cpuidle	cpuidle: Check for dev before deregistering it.	2013-12-03 22:05:22 +01:00
crypto	crypto: talitos - fix aead sglen for case 'dst != src'	2013-11-28 22:25:17 +08:00
dca
devfreq
dio
dma	dma: fix build breakage in s3c24xx-dma	2013-12-04 11:24:30 +05:30
edac	sb_edac: Shut up compiler warning when EDAC_DEBUG is enabled	2013-11-30 12:26:36 +01:00
eisa
extcon	extcon: remove freed groups caused the panic or warning in unregister flow	2013-11-26 15:17:23 +09:00
firewire	[SCSI] Disable WRITE SAME for RAID and virtual host adapter drivers	2013-11-29 08:48:39 +04:00
firmware	efi-pstore: Make efi-pstore return a unique id	2013-11-29 10:11:06 +00:00
fmc
gpio	A rather big fix for a regression where we have dropped omap4 hwmod	2013-12-09 15:38:41 -08:00
gpu	radeon_pm: fix oops in hwmon_attributes_visible() and radeon_hwmon_show_temp_thresh()	2013-12-15 12:16:00 -08:00
hid	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2013-12-13 13:21:28 -08:00
hsi
hv
hwmon	hwmon fixes for 3.13-rc4	2013-12-12 11:05:19 -08:00
hwspinlock
i2c	i2c: imx: Check the return value from clk_prepare_enable()	2013-12-12 22:48:22 +01:00
ide	More ACPI and power management updates for 3.13-rc1	2013-11-20 13:25:04 -08:00
idle	intel_idle: Fixed C6 state on Avoton/Rangeley processors	2013-11-28 14:35:26 +01:00
iio	Fix build failure for gp2ap020a00f.c	2013-12-02 21:11:30 +00:00
infiniband	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
input	Merge 3.13-rc4 into tty-next	2013-12-16 16:36:37 -08:00
iommu	iommu/arm-smmu: fix error return code in arm_smmu_device_dt_probe()	2013-12-06 16:44:25 +00:00
ipack
irqchip	Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-12-02 10:15:39 -08:00
isdn	net: rework recvmsg handler msg_name and msg_namelen logic	2013-11-20 21:52:30 -05:00
leds	leds: pwm: Fix for deferred probe in DT booted mode	2013-12-02 11:53:17 -08:00
lguest
macintosh	powerpc/windfarm: Fix XServe G5 fan control Makefile issue	2013-11-27 11:35:47 +11:00
mailbox
md	A set of device-mapper fixes for 3.13.	2013-12-13 13:22:22 -08:00
media	[media] videobuf2-dma-sg: fix possible memory leak	2013-12-10 05:40:57 -02:00
memory
memstick	tree-wide: use reinit_completion instead of INIT_COMPLETION	2013-11-15 09:32:21 +09:00
message	drivers/message/i2o/driver.c: add missing destroy_workqueue() on error in i2o_driver_register()	2013-11-13 12:09:26 +09:00
mfd	mfd/rtc: s5m: fix register updating by adding regmap for RTC	2013-12-12 18:19:26 -08:00
misc	Char/Misc driver fixes for 3.13-rc3	2013-12-08 18:47:25 -08:00
mmc	mmc: omap: Fix I2C dependency and make driver usable with device tree	2013-11-26 15:51:16 -08:00
mtd	mtd: nand: pxa3xx: Use info->use_dma to release DMA resources	2013-12-12 15:02:04 -08:00
net	igb: Fix for issue where values could be too high for udelay function.	2013-12-14 22:59:42 -05:00
nfc
ntb	NTB driver bug fixes to address a missed call to pci_enable_msix,	2013-11-26 11:15:12 -08:00
nubus
of	Merge branch 'for-linus-dma-masks' of git://git.linaro.org/people/rmk/linux-arm	2013-11-14 07:55:21 +09:00
oprofile
parisc
parport	parport_serial: remove unnecessary pci_set_drvdata()	2013-12-08 17:04:40 -08:00
pci	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-12-15 11:56:47 -08:00
pcmcia	DeviceTree updates for 3.13. This is a bit larger pull request than	2013-11-12 16:52:17 +09:00
phy
pinctrl	sh-pfc: sh7372: Fix pin bias setup	2013-12-03 10:38:41 +01:00
platform	sony-laptop: do not scribble keyboard backlight registers on resume	2013-11-26 13:03:36 +09:00
pnp	PNP: fix restoring devices after hibernation	2013-12-05 02:01:55 +01:00
power	Highlights:	2013-11-18 15:35:09 -08:00
powercap	PowerCap: Fix mode for energy counter	2013-12-05 02:05:48 +01:00
pps	drivers/pps/clients/pps-gpio.c: remove redundant of_match_ptr	2013-11-13 12:09:35 +09:00
ps3
ptp
pwm
rapidio
regulator	regulator: Fixes for v3.13	2013-12-13 11:39:54 -08:00
remoteproc
reset
rpmsg
rtc	mfd/rtc: s5m: fix register updating by adding regmap for RTC	2013-12-12 18:19:26 -08:00
s390	s390/sclp: replace uninitialized early_event_mask_sccb variable with sccb_early	2013-12-02 15:31:07 +01:00
sbus
scsi	SCSI fixes on 20131206	2013-12-06 08:30:18 -08:00
sfi
sh
sn
spi	Merge remote-tracking branches 'spi/fix/bcm2835', 'spi/fix/bcm63xx', 'spi/fix/mpc512x-psc', 'spi/fix/mxs', 'spi/fix/pxa2xx', 'spi/fix/qspi', 'spi/fix/rspi' and 'spi/fix/txx9' into spi-linus	2013-11-28 11:31:35 +00:00
ssb
staging	Merge 3.13-rc4 into tty-next	2013-12-16 16:36:37 -08:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
tc
thermal	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2013-11-19 15:50:47 -08:00
tty	serial: amba-pl011: use port lock to guard control register access	2013-12-17 09:35:37 -08:00
uio	uio: we cannot mmap unaligned page contents	2013-12-02 11:50:37 -08:00
usb	usb: hub: Use correct reset for wedged USB3 devices that are NOTATTACHED	2013-12-04 17:00:43 -08:00
uwb
vfio
vhost	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2013-11-22 10:52:03 -08:00
video	Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2013-12-09 19:21:39 -08:00
virt
virtio	Nothing really exciting: some groundwork for changing virtio endian, and	2013-11-15 13:28:47 +09:00
vlynq
vme
w1	drivers/w1/masters/w1-gpio.c: use dev_get_platdata()	2013-11-15 09:32:21 +09:00
watchdog	sc1200_wdt: Fix oops	2013-12-10 08:48:15 +01:00
xen	Bug-fixes:	2013-12-02 10:12:01 -08:00
zorro
Kconfig	ACPI and power management updates for 3.13-rc1	2013-11-14 13:41:48 +09:00
Makefile	ACPI and power management updates for 3.13-rc1	2013-11-14 13:41:48 +09:00