kernel_samsung_sm7125

jenna

History

Linus Torvalds 55db4c64ed Revert "tty: make receive_buf() return the amout of bytes received" This reverts commit `b1c43f82c5`. It was broken in so many ways, and results in random odd pty issues. It re-introduced the buggy schedule_work() in flush_to_ldisc() that can cause endless work-loops (see commit a5660b41af6a: "tty: fix endless work loop when the buffer fills up"). It also used an "unsigned int" return value fo the ->receive_buf() function, but then made multiple functions return a negative error code, and didn't actually check for the error in the caller. And it didn't actually work at all. BenH bisected down odd tty behavior to it: "It looks like the patch is causing some major malfunctions of the X server for me, possibly related to PTYs. For example, cat'ing a large file in a gnome terminal hangs the kernel for -minutes- in a loop of what looks like flush_to_ldisc/workqueue code, (some ftrace data in the quoted bits further down). ... Some more data: It -looks- like what happens is that the flush_to_ldisc work queue entry constantly re-queues itself (because the PTY is full ?) and the workqueue thread will basically loop forver calling it without ever scheduling, thus starving the consumer process that could have emptied the PTY." which is pretty much exactly the problem we fixed in `a5660b41af`. Milton Miller pointed out the 'unsigned int' issue. Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reported-by: Milton Miller <miltonm@bga.com> Cc: Stefan Bigler <stefan.bigler@keymile.com> Cc: Toby Gray <toby.gray@realvnc.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		14 years ago
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c2port	Fix common misspellings	14 years ago
carma	misc: Add CARMA DATA-FPGA Programmer support	14 years ago
cb710	misc: change to new flag variable	14 years ago
eeprom	…
ibmasm	Merge branch 'master' into for-next	14 years ago
iwmc3200top	Fix common misspellings	14 years ago
lis3lv02d	Move lis3lv02d drivers to drivers/misc	14 years ago
sgi-gru	sanitize <linux/prefetch.h> usage	14 years ago
sgi-xp	…
ti-st	Revert "tty: make receive_buf() return the amout of bytes received"	14 years ago
Kconfig	Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6	14 years ago
Makefile	Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6	14 years ago
ab8500-pwm.c	…
ad525x_dpot-i2c.c	…
ad525x_dpot-spi.c	…
ad525x_dpot.c	…
ad525x_dpot.h	…
apds990x.c	…
apds9802als.c	drivers/misc/apds9802als.c: put the device into runtime suspend after resume()/probe() is handled	14 years ago
arm-charlcd.c	…
atmel-ssc.c	…
atmel_pwm.c	…
atmel_tclib.c	drivers/misc/atmel_tclib.c: fix a memory leak	14 years ago
bh1770glc.c	…
bh1780gli.c	treewide: cleanup continuations and remove logging message whitespace	14 years ago
bmp085.c	Fix common misspellings	14 years ago
cs5535-mfgpt.c	cs5535: Fix section mismatch	14 years ago
ds1682.c	…
enclosure.c	…
ep93xx_pwm.c	drivers/misc/ep93xx_pwm.c: world-writable sysfs files	14 years ago
hmc6352.c	drivers/misc/hmc6352.c: fix wrong return value checking for i2c_master_recv()	14 years ago
hpilo.c	…
hpilo.h	…
ics932s401.c	…
ioc4.c	…
isl29003.c	…
isl29020.c	…
kgdbts.c	kgdbts: only use new asm-generic/ptrace.h api when needed	14 years ago
lkdtm.c	…
pch_phub.c	pch_phub: Support new device ML7223	14 years ago
phantom.c	…
pti.c	Intel PTI implementaiton of MIPI 1149.7.	14 years ago
spear13xx_pcie_gadget.c	treewide: cleanup continuations and remove logging message whitespace	14 years ago
ti_dac7512.c	…
tifm_7xx1.c	…
tifm_core.c	workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable'	14 years ago
tsl2550.c	…
vmw_balloon.c	workqueue, freezer: unify spelling of 'freeze' + 'able' to 'freezable'	14 years ago