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Dave Young f278a2f7bb tty: Fix regressions caused by commit b50989dc ... The following commit made console open fails while booting: commit b50989dc44 Author: Alan Cox <alan@linux.intel.com> Date: Sat Sep 19 13:13:22 2009 -0700 tty: make the kref destructor occur asynchronously Due to tty release routines run in a workqueue now, error like the following will be reported while booting: INIT open /dev/console Input/output error It also causes hibernation regression to appear as reported at http://bugzilla.kernel.org/show_bug.cgi?id=14229 The reason is that now there's latency issue with closing, but when we open a "closing not finished" tty, -EIO will be returned. Fix it as per the following Alan's suggestion: Fun but it's actually not a bug and the fix is wrong in itself as the port may be closing but not yet being destructed, in which case it seems to do the wrong thing. Opening a tty that is closing (and could be closing for long periods) is supposed to return -EIO. I suspect a better way to deal with this and keep the old console timing is to split tty->shutdown into two functions. tty->shutdown() - called synchronously just before we dump the tty onto the waitqueue for destruction tty->cleanup() - called when the destructor runs. We would then do the shutdown part which can occur in IRQ context fine, before queueing the rest of the release (from tty->magic = 0 ... the end) to occur asynchronously The USB update in -next would then need a call like if (tty->cleanup) tty->cleanup(tty); at the top of the async function and the USB shutdown to be split between shutdown and cleanup as the USB resource cleanup and final tidy cannot occur synchronously as it needs to sleep. In other words the logic becomes final kref put make object unfindable async clean it up Signed-off-by: Dave Young <hidave.darkstar@gmail.com> [ rjw: Rebased on top of 2.6.31-git, reworked the changelog. ] Signed-off-by: "Rafael J. Wysocki" <rjw@sisk.pl> [ Changed serial naming to match new rules, dropped tty_shutdown as per comments from Alan Stern - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		16 years ago
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accessibility	…
acpi	ACPI: kill "unused variable ‘i’" warning	16 years ago
amba	…
ata	…
atm	…
auxdisplay	…
base	…
block	Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus	16 years ago
bluetooth	…
cdrom	sysctl: remove "struct file *" argument of ->proc_handler	16 years ago
char	tty: Fix regressions caused by commit b50989dc	16 years ago
clocksource	…
connector	…
cpufreq	…
cpuidle	…
crypto	…
dca	…
dio	…
dma	…
edac	edac: core: remove completion-wait for complete with rcu_barrier	16 years ago
eisa	…
firewire	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6	16 years ago
firmware	…
gpio	Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	16 years ago
gpu	const: mark struct vm_struct_operations	16 years ago
hid	…
hwmon	Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging	16 years ago
i2c	ACPI: i2c-scmi: don't use acpi_device_uid()	16 years ago
ide	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6	16 years ago
idle	…
ieee1394	const: mark struct vm_struct_operations	16 years ago
ieee802154	…
infiniband	const: mark struct vm_struct_operations	16 years ago
input	input: fix build failures caused by Kconfig Winbond WPCD376I Consumer IR hardware driver Kconfig entry	16 years ago
isdn	…
leds	Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds	16 years ago
lguest	Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus	16 years ago
macintosh	Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds	16 years ago
mca	…
md	…
media	const: mark struct vm_struct_operations	16 years ago
memstick	memstick: move dev_dbg	16 years ago
message	…
mfd	…
misc	const: mark struct vm_struct_operations	16 years ago
mmc	Merge branch 'origin' into for-linus	16 years ago
mtd	Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze	16 years ago
net	headers: kref.h redux	16 years ago
nubus	…
of	…
oprofile	cpumask: use zalloc_cpumask_var() where possible	16 years ago
parisc	…
parport	sysctl: remove "struct file *" argument of ->proc_handler	16 years ago
pci	ACPICA: fixup after acpi_get_object_info() change	16 years ago
pcmcia	Merge branch 'origin' into for-linus	16 years ago
platform	thinkpad-acpi: fix CONFIG_THINKPAD_ACPI_HOTKEY_POLL build problem	16 years ago
pnp	ACPI: remove acpi_device.flags.hardware_id	16 years ago
power	…
pps	…
ps3	…
rapidio	…
regulator	…
rtc	Merge branch 'origin' into for-linus	16 years ago
s390	headers: utsname.h redux	16 years ago
sbus	…
scsi	const: mark struct vm_struct_operations	16 years ago
serial	Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	16 years ago
sfi	…
sh	…
sn	…
spi	Merge branch 'origin' into for-linus	16 years ago
ssb	ssb/sdio: fix printk format warnings	16 years ago
staging	Merge branch 'master' of /home/davem/src/GIT/linux-2.6/	16 years ago
tc	…
telephony	…
thermal	…
uio	const: mark struct vm_struct_operations	16 years ago
usb	tty: Fix regressions caused by commit b50989dc	16 years ago
uwb	…
video	const: mark struct vm_struct_operations	16 years ago
virtio	…
vlynq	drivers/vlynq/vlynq.c: fix resource size off by 1 error	16 years ago
w1	…
watchdog	[WATCHDOG] Add support for the Avionic Design Xanthos watchdog timer.	16 years ago
xen	…
zorro	…
Kconfig	…
Makefile	Merge git://git.infradead.org/mtd-2.6	16 years ago