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384e301e3519599b000c1a2ecd938b533fc15d85
linux/drivers
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Liang Li 384e301e35 pch_uart: fix a deadlock when pch_uart as console 
When we use pch_uart as system console like 'console=ttyPCH0,115200',
then 'send break' to it. We'll encounter the deadlock on a cpu/core,
with interrupts disabled on the core. When we happen to have all irqs
affinity to cpu0 then the deadlock on cpu0 actually deadlock whole
system.

In pch_uart_interrupt, we have spin_lock_irqsave(&priv->lock, flags)
then call pch_uart_err_ir when break is received. Then the call to
dev_err would actually call to pch_console_write then we'll run into
another spin_lock(&priv->lock), with interrupts disabled.

So in the call sequence lead by pch_uart_interrupt, we should be
carefully to call functions that will 'print message to console' only
in case the uart port is not being used as serial console.

Signed-off-by: Liang Li <liang.li@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-20 16:03:20 -08:00
..
accessibility
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acpi
Merge branch 'acpi-assorted'
2013-01-04 23:10:29 +01:00
amba
Drivers: amba: remove __dev* attributes.
2013-01-03 15:57:02 -08:00
ata
Drivers: ata: remove __dev* attributes.
2013-01-03 15:57:03 -08:00
atm
Drivers: atm: remove __dev* attributes.
2013-01-03 15:57:04 -08:00
auxdisplay
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
base
Merge branch 'pm-sleep'
2013-01-06 00:36:17 +01:00
bcma
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2013-01-08 07:31:49 -08:00
block
Drivers: block: remove __dev* attributes.
2013-01-03 15:57:15 -08:00
bluetooth
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
bus
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
cdrom
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
char
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
clk
Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2013-01-08 18:53:56 -08:00
clocksource
Drivers: clocksource: remove __dev* attributes.
2013-01-03 15:57:15 -08:00
connector
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
cpufreq
cpufreq / governor: Fix problem with cpufreq_ondemand or cpufreq_conservative
2013-01-03 13:11:19 +01:00
cpuidle
cpuidle: fix lock contention in the idle path
2013-01-03 13:11:06 +01:00
crypto
Drivers: crypto: remove __dev* attributes.
2013-01-03 15:57:02 -08:00
dca
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devfreq
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
dio
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dma
Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2013-01-08 18:53:56 -08:00
edac
Merge tag 'edac_fixes_for_3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
2013-01-09 08:43:56 -08:00
eisa
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extcon
Merge tag 'pull_req_20121122' of git://git.kernel.org/pub/scm/linux/kernel/git/mzx/extcon into char-misc-next
2012-11-27 06:44:10 -08:00
firewire
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2012-12-13 12:00:02 -08:00
firmware
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
gpio
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
gpu
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
2013-01-08 16:08:10 -08:00
hid
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
hsi
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
hv
hv: hv_balloon: mark a function static
2012-11-21 12:46:40 -08:00
hwmon
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
hwspinlock
hwspinlock: remove use of __devexit
2012-11-28 11:41:36 -08:00
i2c
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
ide
Drivers: ide: remove __dev* attributes.
2013-01-03 15:57:03 -08:00
idle
intel_idle: pr_debug information need separated
2013-01-03 13:11:05 +01:00
iio
Drivers: iio: remove __dev* attributes.
2013-01-03 15:57:03 -08:00
infiniband
Drivers: infinband: remove __dev* attributes.
2013-01-03 15:57:15 -08:00
input
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
iommu
Drivers: iommu: remove __dev* attributes.
2013-01-03 15:57:14 -08:00
ipack
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
irqchip
Merge tag 'dt2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2012-12-14 14:42:53 -08:00
isdn
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
leds
leds: leds-gpio: set devm_gpio_request_one() flags param correctly
2013-01-02 17:58:41 -08:00
lguest
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
macintosh
Drivers: macintosh: remove __dev* attributes.
2013-01-03 15:57:14 -08:00
md
Merge tag 'dm-3.8-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
2012-12-21 17:08:06 -08:00
media
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
memory
Drivers: memory: remove __dev* attributes.
2013-01-03 15:57:14 -08:00
memstick
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message
Drivers: message: remove __dev* attributes.
2013-01-03 15:57:14 -08:00
mfd
Drivers: mfd: remove __dev* attributes.
2013-01-03 15:57:14 -08:00
misc
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
mmc
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
mtd
Drivers: mtd: remove __dev* attributes.
2013-01-03 15:57:03 -08:00
net
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
nfc
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
nubus
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of
of: Fix export of of_find_matching_node_and_match()
2012-12-19 10:58:53 +00:00
oprofile
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parisc
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
parport
Drivers: parport: remove __dev* attributes.
2013-01-03 15:57:03 -08:00
pci
PCI: Reduce Ricoh 0xe822 SD card reader base clock frequency to 50MHz
2012-12-26 10:43:06 -07:00
pcmcia
Merge tag 'headers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2012-12-12 11:45:16 -08:00
pinctrl
Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2013-01-08 18:53:56 -08:00
platform
Drivers: platform: x86: remove __dev* attributes.
2013-01-03 15:57:03 -08:00
pnp
PNP: Handle IORESOURCE_BITS in resource allocation
2013-01-03 13:10:53 +01:00
power
Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2013-01-08 18:53:56 -08:00
pps
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
ps3
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
ptp
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2012-12-12 18:07:07 -08:00
pwm
Merge tag 'for-3.8-rc1' of git://gitorious.org/linux-pwm/linux-pwm
2012-12-19 08:19:07 -08:00
rapidio
Merge tag 'driver-core-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2012-12-11 13:13:55 -08:00
regulator
Drivers: regulator: remove __dev* attributes.
2013-01-03 15:57:04 -08:00
remoteproc
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
rpmsg
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
rtc
drivers/rtc/rtc-vt8500.c: fix handling of data passed in struct rtc_time
2013-01-04 16:11:48 -08:00
s390
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
sbus
Drivers: sbus: remove __dev* attributes.
2013-01-03 15:57:03 -08:00
scsi
Drivers: scsi: remove __dev* attributes.
2013-01-03 15:57:01 -08:00
sfi
…
sh
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
sn
Drivers: misc: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
spi
spi/sh-hspi: fix return value check in hspi_probe().
2012-12-19 15:11:41 +00:00
ssb
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2013-01-08 07:31:49 -08:00
staging
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
target
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2012-12-15 14:25:10 -08:00
tc
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thermal
Drivers: thermal: remove __dev* attributes.
2013-01-03 15:57:02 -08:00
tty
pch_uart: fix a deadlock when pch_uart as console
2013-01-20 16:03:20 -08:00
uio
Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2012-12-12 12:05:15 -08:00
usb
tty: Added a CONFIG_TTY option to allow removal of TTY
2013-01-18 16:15:27 -08:00
uwb
uwb: fix uwb_dev_unlock() missed at an error path in uwb_rc_cmd_async()
2012-11-26 15:58:43 -08:00
vfio
vfio-pci: Enable device before attempting reset
2012-12-07 13:43:51 -07:00
vhost
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2012-12-15 14:25:10 -08:00
video
Merge tag 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2013-01-08 18:53:56 -08:00
virt
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2012-12-18 09:58:09 -08:00
virtio
Drivers: virtio: remove __dev* attributes.
2013-01-03 15:57:01 -08:00
vlynq
Drivers: vlynq: remove __dev* attributes.
2013-01-03 15:57:01 -08:00
vme
…
w1
Drivers: w1: remove last __devexit_p() instance
2013-01-03 15:57:01 -08:00
watchdog
watchdog: twl4030_wdt: add DT support
2013-01-02 12:07:05 +01:00
xen
Drivers: xen: remove __dev* attributes.
2013-01-03 15:57:01 -08:00
zorro
Drivers: zorro: remove CONFIG_HOTPLUG usage
2013-01-03 15:57:01 -08:00
Kconfig
…
Makefile
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