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Ilya Zykov a1bf958442 tty: Add driver unthrottle in ioctl(...,TCFLSH,..). 
Regression 'tty: fix "IRQ45: nobody cared"'
Regression commit 7b292b4bf9

  Function reset_buffer_flags() also invoked during the ioctl(...,TCFLSH,..).
At the time of request we can have full buffers and throttled driver too.
If we don't unthrottle driver, we can get forever throttled driver, because,
after request, we will have empty buffers and throttled driver and
there is no place to unthrottle driver.
It simple reproduce with "pty" pair then one side sleep on tty->write_wait,
and other side do ioctl(...,TCFLSH,..). Then there is no place to do writers wake up.

Signed-off-by: Ilya Zykov <ilya@ilyx.ru>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2013-01-18 16:07:34 -08:00
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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 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-12-12 18:07:07 -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: synclink, remove unneeded tests 2013-01-15 22:43:15 -08:00
clk ARM: arm-soc fixes for 3.8-rc 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 ARM: arm-soc fixes for 3.8-rc 2013-01-08 18:53:56 -08:00
edac Two error path fixes causing a crash and a Kconfig fix for an issue 2013-01-09 08:43:56 -08:00
eisa
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extcon extcon pull request targetting Linux 3.8 for Greg KH on 2012.11.22 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
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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 i2c: remove __dev* attributes from subsystem 2012-12-22 20:13:45 +01:00
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 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-01-04 10:30:11 -08:00
iommu Drivers: iommu: remove __dev* attributes. 2013-01-03 15:57:14 -08:00
ipack TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
irqchip ARM: arm-soc: Device-tree updates, take 2 2012-12-14 14:42:53 -08:00
isdn TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
leds leds: leds-gpio: set devm_gpio_request_one() flags param correctly 2013-01-02 17:58:41 -08:00
lguest lguest: fix typo 2012-12-18 15:19:06 +10:30
macintosh Drivers: macintosh: remove __dev* attributes. 2013-01-03 15:57:14 -08:00
md Miscellaneous device-mapper fixes, cleanups and performance improvements. 2012-12-21 17:08:06 -08:00
media Drivers: media: remove __dev* attributes. 2013-01-03 15:57:02 -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 Merge git://www.linux-watchdog.org/linux-watchdog 2012-12-21 17:10:29 -08:00
mmc TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
mtd Drivers: mtd: remove __dev* attributes. 2013-01-03 15:57:03 -08:00
net TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -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 ARM: arm-soc: Header cleanups 2012-12-12 11:45:16 -08:00
pinctrl ARM: arm-soc fixes for 3.8-rc 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 ARM: arm-soc fixes for 3.8-rc 2013-01-08 18:53:56 -08:00
pps Drivers: misc: remove __dev* attributes. 2013-01-03 15:57:16 -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 pwm: Changes for v3.8-rc1 2012-12-19 08:19:07 -08:00
rapidio Driver core updates for 3.8-rc1 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: switch tty_schedule_flip 2013-01-15 22:43:15 -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
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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 Staging: sb105x: mark it BROKEN 2013-01-16 07:38:04 -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 tty: Add driver unthrottle in ioctl(...,TCFLSH,..). 2013-01-18 16:07:34 -08:00
uio ARM: arm-soc: SoC updates for 3.8 2012-12-12 12:05:15 -08:00
usb TTY: switch tty_flip_buffer_push 2013-01-15 22:30:15 -08:00
uwb
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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 ARM: arm-soc fixes for 3.8-rc 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
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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
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Makefile
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