Linus Torvalds cbe9352fa0 tty-ldisc: be more careful in 'put_ldisc' locking ...

Use 'atomic_dec_and_lock()' to make sure that we always hold the
tty_ldisc_lock when the ldisc count goes to zero. That way we can never
race against 'tty_ldisc_try()' increasing the count again.

Reported-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@mail.by>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2009-08-04 13:46:30 -07:00

..

agp

Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6

2009-06-20 10:15:30 -07:00

hw_random

Remove multiple KERN_ prefixes from printk formats

2009-07-08 10:30:03 -07:00

ip2

tty: rewrite the ldisc locking

2009-06-11 08:51:01 -07:00

ipmi

ipmi: remove driver_data direct access of struct device

2009-06-15 21:30:27 -07:00

mwave

mwave: struct device - replace bus_id with dev_name(), dev_set_name()

2009-01-06 10:44:38 -08:00

pcmcia

tty: fix chars_in_buffers

2009-07-20 16:38:43 -07:00

rio

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

tpm

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

xilinx_hwicap

xilinx_hwicap: remove improper wording in license statement

2008-12-17 11:23:07 -08:00

.gitignore

…

amiserial.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

apm-emulation.c

APM emulation: Notify about all suspend events, not just APM invoked ones (v2)

2008-07-16 23:27:02 +02:00

applicom.c

applicom: Auto-load applicom module when device opened.

2009-04-06 14:36:30 -07:00

applicom.h

…

bfin_jtag_comm.c

bfin_jtag_comm: clean up printk usage

2009-06-22 11:32:23 -07:00

bfin-otp.c

Blackfin char driver for Blackfin on-chip OTP memory (v3)

2008-04-25 08:04:56 +08:00

briq_panel.c

briq_panel: BKL pushdown

2008-06-20 14:05:55 -06:00

bsr.c

powerpc/BSR: Fix BSR to allow mmap of small BSR on 64k kernel

2009-06-26 14:37:26 +10:00

cd1865.h

…

ChangeLog

…

consolemap.c

consolemap: indentation & braces disagree - reindent

2009-01-06 15:59:30 -08:00

cp437.uni

unicode table for cp437

2008-12-13 11:25:49 -08:00

cs5535_gpio.c

Add a bunch of cycle_kernel_lock() calls

2008-06-20 14:05:53 -06:00

cyclades.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

defkeymap.c_shipped

Fix default compose table initialization

2008-03-03 14:53:16 -08:00

defkeymap.map

…

digi1.h

…

digiFep1.h

…

digiPCI.h

…

ds1302.c

rtc: use bcd2bin/bin2bcd

2008-10-20 08:52:41 -07:00

ds1620.c

[ARM] netwinder: clean up GPIO naming

2008-12-13 09:12:07 +00:00

dsp56k.c

device create: char: convert device_create_drvdata to device_create

2008-10-16 09:24:42 -07:00

dtlk.c

dtlk: off by one in {read,write}_tts()

2009-06-19 16:46:06 -07:00

efirtc.c

drivers/char/efirtc.c: removed duplicated #include

2008-08-04 16:59:56 -07:00

epca.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

epca.h

epca: use tty_port

2008-07-20 17:12:36 -07:00

epcaconfig.h

…

esp.c

esp: fix section mismatch warning

2009-04-07 08:31:03 -07:00

generic_nvram.c

driver/char/generic_nvram: fix banner

2008-06-12 18:05:41 -07:00

generic_serial.c

tty: Remove some pointless casts

2009-01-02 10:19:40 -08:00

genrtc.c

genrtc: BKL pushdown

2008-06-20 14:05:57 -06:00

hangcheck-timer.c

drivers/char/: Spelling fixes

2008-02-03 17:11:42 +02:00

hpet.c

irq: change ACPI GSI APIs to also take a device argument

2009-04-28 12:21:17 +02:00

hvc_beat.c

powerpc/cell: Use correct types in beat files

2009-01-08 16:25:16 +11:00

hvc_console.c

tty: fix chars_in_buffers

2009-07-20 16:38:43 -07:00

hvc_console.h

powerpc: Make open count variables signed in hvcs/hvsi/hvc_console

2008-12-03 21:04:13 +11:00

hvc_irq.c

hvc_console: Call free_irq() only if request_irq() was successful

2009-01-13 14:48:01 +11:00

hvc_iseries.c

drivers/hvc: Add missing __devexit_p()

2009-06-16 14:15:44 +10:00

hvc_iucv.c

[S390] pm: hvc_iucv power management callbacks

2009-06-16 10:31:19 +02:00

hvc_rtas.c

[POWERPC] hvc_rtas_init() must be __init

2008-02-14 22:11:02 +11:00

hvc_udbg.c

powerpc: udbg-based backend for hvc_console

2008-11-19 16:04:25 +11:00

hvc_vio.c

drivers/hvc: Add missing __devexit_p()

2009-06-16 14:15:44 +10:00

hvc_xen.c

hvc_console: Add a hangup notifier for backends

2008-10-22 10:59:54 +11:00

hvcs.c

Merge commit 'origin/master' into next

2009-06-18 11:16:55 +10:00

hvsi.c

hvc_console: Remove tty->low_latency on pseries backends

2009-03-11 10:44:26 +11:00

i8k.c

i8k: Add Dell Vostro systems

2009-01-02 10:28:32 -08:00

isicom.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

istallion.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

Kconfig

MIPS: Update VR41xx GPIO driver to use gpiolib

2009-07-03 15:45:25 +01:00

keyboard.c

Input: keyboard - remove warning about raw mode not supported

2009-04-20 21:21:24 -07:00

lp.c

device create: char: convert device_create_drvdata to device_create

2008-10-16 09:24:42 -07:00

Makefile

MIPS: Update VR41xx GPIO driver to use gpiolib

2009-07-03 15:45:25 +01:00

mbcs.c

mbcs: cdev lock_kernel() pushdown

2008-06-20 14:05:48 -06:00

mbcs.h

MBCS: convert dmareadlock to mutex

2008-02-07 08:42:25 -08:00

mem.c

drivers/char/mem.c: memory_open() cleanup: lookup minor device number from devlist

2009-06-18 13:03:54 -07:00

misc.c

Driver Core: misc: add nodename support for misc devices.

2009-06-15 21:30:25 -07:00

mmtimer.c

mmtimer: Push BKL down into the ioctl handler

2008-07-17 11:34:49 -07:00

moxa.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

moxa.h

Char: moxa, cleanup rx/tx

2008-04-30 08:29:43 -07:00

mspec.c

mspec: convert nopfn to fault

2008-07-24 10:47:14 -07:00

mxser.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

mxser.h

mxser: convert large macros to functions

2008-04-30 08:29:49 -07:00

n_hdlc.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

n_r3964.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

n_tty.c

pty: avoid forcing 'low_latency' tty flag

2009-07-29 12:15:56 -07:00

nozomi.c

tty: fix chars_in_buffers

2009-07-20 16:38:43 -07:00

nsc_gpio.c

…

nvram.c

[PATCH] nvram - convert PRINT_PROC to seq_file

2008-11-11 09:56:00 +00:00

nwbutton.c

…

nwbutton.h

…

nwflash.c

[ARM] netwinder: clean up GPIO naming

2008-12-13 09:12:07 +00:00

pc8736x_gpio.c

pc8736x_gpio: add support for PC87365 chips

2008-10-20 08:52:40 -07:00

ppdev.c

ppdev: reduce kernel log spam

2009-06-18 13:03:54 -07:00

ps3flash.c

ps3flash: Always read chunks of 256 KiB, and cache them

2009-06-15 16:47:27 +10:00

pty.c

pty: avoid forcing 'low_latency' tty flag

2009-07-29 12:15:56 -07:00

random.c

Avoid ICE in get_random_int() with gcc-3.4.5

2009-05-19 11:25:35 -07:00

raw.c

Driver Core: raw: add nodename for raw devices

2009-06-15 21:30:26 -07:00

riscom8_reg.h

…

riscom8.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

riscom8.h

tty: add more tty_port fields

2008-07-20 17:12:38 -07:00

rocket_int.h

tty: rocketport uses different port flags to everyone else

2009-01-02 10:19:39 -08:00

rocket.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

rocket.h

tty: rocketport uses different port flags to everyone else

2009-01-02 10:19:39 -08:00

rtc.c

RTC: Remove the BKL.

2009-01-08 16:44:03 -07:00

scc.h

m68k: atari - Rename "mfp" to "st_mfp"

2009-02-22 09:23:02 -08:00

scx200_gpio.c

Add a bunch of cycle_kernel_lock() calls

2008-06-20 14:05:53 -06:00

selection.c

tty: rewrite the ldisc locking

2009-06-11 08:51:01 -07:00

ser_a2232.c

m68k: ser_a2232 - Kill warn_unused_result warnings

2009-01-12 20:56:39 +01:00

ser_a2232.h

…

ser_a2232fw.ax

…

ser_a2232fw.h

…

serial167.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

snsc_event.c

byteorder: don't directly include linux/byteorder/generic.h

2008-05-16 12:01:45 -07:00

snsc.c

device create: char: convert device_create_drvdata to device_create

2008-10-16 09:24:42 -07:00

snsc.h

Convert asm/semaphore.h users to linux/semaphore.h

2008-04-18 22:22:54 -04:00

sonypi.c

Rationalize fasync return values

2009-03-16 08:34:35 -06:00

specialix_io8.h

tty: add more tty_port fields

2008-07-20 17:12:38 -07:00

specialix.c

specialix.c: convert nested spin_lock_irqsave to spin_lock

2009-07-20 16:38:43 -07:00

stallion.c

tty: Add carrier processing on close to the tty_port core

2009-06-11 08:50:56 -07:00

sx.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

sx.h

Char: char/serial, remove SERIAL_TYPE_NORMAL redefines

2008-02-07 08:42:33 -08:00

sxboards.h

…

sxwindow.h

…

synclink_gt.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

synclink.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

synclinkmp.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

sysrq.c

sysrq, kdump: make sysrq-c consistent

2009-07-29 19:10:36 -07:00

tb0219.c

Update Yoichi Yuasa's e-mail address

2009-07-03 15:45:29 +01:00

tlclk.c

tlckl: BKL pushdown

2008-06-20 14:05:51 -06:00

toshiba.c

toshiba: use ioremap_cached

2008-04-30 23:15:34 +02:00

tty_audit.c

tty: remove buffer special casing

2009-06-11 08:51:02 -07:00

tty_buffer.c

pty: avoid forcing 'low_latency' tty flag

2009-07-29 12:15:56 -07:00

tty_io.c

tty: fix sanity check

2009-06-16 12:01:16 -07:00

tty_ioctl.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

tty_ldisc.c

tty-ldisc: be more careful in 'put_ldisc' locking

2009-08-04 13:46:30 -07:00

tty_port.c

tty_port: Fix return on interrupted use

2009-07-17 08:50:43 -07:00

vc_screen.c

vc: create vcs(a) devices for consoles

2009-07-20 16:38:43 -07:00

viotape.c

tape: beyond ARRAY_SIZE of viocd_diskinfo

2009-06-02 10:32:34 +10:00

virtio_console.c

virtio: find_vqs/del_vqs virtio operations

2009-06-12 22:16:36 +09:30

vme_scc.c

m68k: vme_scc - Kill warn_unused_result warnings

2009-01-12 20:56:38 +01:00

vt_ioctl.c

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

vt.c

vt: drop bootmem/slab memory distinction

2009-07-16 09:19:16 -07:00