Linus Torvalds 202c4675c5 pty_write: don't do a tty_wakeup() when the buffers are full ... Commit ac89a9174 ("pty: don't limit the writes to 'pty_space()' inside 'pty_write()'") removed the pty_space() checking, in order to let the regular tty buffer code limit the buffering itself. That was all good, but as a subtle side effect it meant that we'd be doing a tty_wakeup() even in the case where the buffers were all filled up, and didn't actually make any progress on the write. Which sounds innocuous, but it interacts very badly with the ppp_async code, which has an infinite loop in ppp_async_push() that tries to push out data to the tty. When we call tty_wakeup(), that loop ends up thinking that progress was made (see the subtle interactions between XMIT_WAKEUP and 'tty_stuffed' for details). End result: one unhappy ppp user. Fixed by noticing when tty_insert_flip_string() didn't actually do anything, and then not doing any more processing (including, very much not calling tty_wakeup()). Bisected-and-tested-by: Peter Volkov <pva@gentoo.org> Cc: stable@kernel.org (2.6.31) Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-09-18 07:05:58 -07:00
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accessibility
acpi	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2009-09-16 07:49:54 -07:00
amba	Merge branches 'arm', 'at91', 'bcmring', 'ep93xx', 'mach-types', 'misc' and 'w90x900' into devel	2009-09-12 12:01:34 +01:00
ata	libata: Add pata_atp867x driver for Artop/Acard ATP867X controllers	2009-09-17 16:47:06 -04:00
atm
auxdisplay
base	Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev	2009-09-15 09:50:49 -07:00
block	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2009-09-16 08:27:10 -07:00
bluetooth	pcmcia: dtl1_cs: fix pcmcia_loop_config logic	2009-09-15 10:17:16 -07:00
cdrom
char	pty_write: don't do a tty_wakeup() when the buffers are full	2009-09-18 07:05:58 -07:00
clocksource	sh: CMT suspend/resume	2009-08-15 12:58:45 +09:00
connector
cpufreq	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
cpuidle
crypto	crypto: talitos - add support for 36 bit addressing	2009-08-13 11:51:51 +10:00
dca
dio
dma	at_hdmac: Rework suspend_late()/resume_early()	2009-09-14 20:27:00 +02:00
edac	amd64_edac: check NB MCE bank enable on the current node properly	2009-09-16 13:05:46 +02:00
eisa
firewire	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
firmware	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
gpio
gpu	PCI/vgaarb: cleanup some warnings + cleanup some comments.	2009-09-09 13:29:41 -07:00
hid	Merge branches 'upstream', 'upstream-fixes' and 'debugfs' into for-linus	2009-09-13 20:09:41 +02:00
hwmon	hwmon: (lm85) Don't bind to Winbond/Nuvoton WPCD377I	2009-09-15 17:18:14 +02:00
i2c	Merge branch 'master' into for-linus	2009-08-23 00:03:00 +02:00
ide	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-next-2.6	2009-09-15 10:01:16 -07:00
idle
ieee1394	drivers: Kill now superfluous ->last_rx stores	2009-09-02 23:07:36 -07:00
ieee802154	netdev: convert bulk of drivers to netdev_tx_t	2009-09-01 01:14:07 -07:00
infiniband	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
input	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2009-09-16 08:27:10 -07:00
isdn	isdn: convert to netdev_tx_t	2009-09-01 01:13:16 -07:00
leds	leds: after setting inverted attribute, we must update the LED	2009-08-26 20:06:53 -07:00
lguest
macintosh	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2009-09-15 09:51:09 -07:00
mca
md	Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block	2009-09-14 17:55:15 -07:00
media	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2009-09-15 09:22:18 -07:00
memstick
message	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2009-09-14 17:53:36 -07:00
mfd
misc	hpilo: add poll f_op	2009-09-15 09:50:48 -07:00
mmc	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
mtd	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2009-09-16 08:27:10 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-09-17 20:53:52 -07:00
nubus
of
oprofile
parisc
parport
pci	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2009-09-16 07:49:54 -07:00
pcmcia	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pcmcia-2.6	2009-09-16 08:11:23 -07:00
platform	hp-wmi: Switch driver to dev_pm_ops	2009-09-14 20:26:59 +02:00
pnp	x86: Introduce GDT_ENTRY_INIT(), initialize bad_bios_desc statically	2009-08-10 11:10:52 +02:00
power
pps	pps: fix incorrect verdict check	2009-08-26 20:06:52 -07:00
ps3	powerpc/ps3: Workaround for flash memory I/O error	2009-09-11 11:28:00 +10:00
rapidio
regulator
rtc	Nicolas Pitre has a new email address	2009-09-15 09:37:12 -07:00
s390	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
sbus
scsi	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
serial	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-09-17 20:53:52 -07:00
sh
sn
spi	Merge branch 'master' into devel	2009-09-12 12:04:37 +01:00
ssb	ssb/sdio: fix printk format warnings	2009-09-16 16:21:00 -04:00
staging	MIPS: Octeon: False positive timeout	2009-09-17 20:07:41 +02:00
tc
telephony
thermal	thermal_sys: check get_temp return value	2009-08-26 20:06:52 -07:00
uio	uio: add generic driver for PCI 2.3 devices	2009-09-15 09:50:48 -07:00
usb	debugfs: Modified default dir of debugfs for debugging UHCI.	2009-09-15 09:50:49 -07:00
uwb	Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb	2009-09-17 09:44:09 -07:00
video	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6	2009-09-17 20:54:12 -07:00
virtio
vlynq
w1	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2009-08-12 17:44:53 -07:00
watchdog	[WATCHDOG] ar7_wdt: fix path to ar7-specific headers	2009-08-15 13:05:01 +00:00
xen	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
zorro
Kconfig
Makefile