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59cd0cbc75367b82f704f63b104117462275060d
linux/drivers/char
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Prarit Bhargava ee527cd3a2 Use stop_machine_run in the Intel RNG driver 
Replace call_smp_function with stop_machine_run in the Intel RNG driver.

CPU A has done read_lock(&lock)
CPU B has done write_lock_irq(&lock) and is waiting for A to release the lock.

A third CPU calls call_smp_function and issues the IPI.  CPU A takes CPU
C's IPI.  CPU B is waiting with interrupts disabled and does not see the
IPI.  CPU C is stuck waiting for CPU B to respond to the IPI.

Deadlock.

The solution is to use stop_machine_run instead of call_smp_function
(call_smp_function should not be called in situations where the CPUs may be
suspended).

[haruo.tomita@toshiba.co.jp: fix a typo in mod_init()]
[haruo.tomita@toshiba.co.jp: fix memory leak]
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Jan Beulich <jbeulich@novell.com>
Cc: "Tomita, Haruo" <haruo.tomita@toshiba.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:00 -07:00
..
agp
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
2007-05-05 14:55:20 -07:00
drm
Merge branch 'drm-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied/drm-2.6
2007-05-07 12:24:07 -07:00
hw_random
Use stop_machine_run in the Intel RNG driver
2007-05-08 11:15:00 -07:00
ip2
Fix bogus 'inline' in drivers/char/ip2/i2lib.c
2007-02-21 11:18:26 -08:00
ipmi
ipmi: add pci remove handling
2007-05-08 11:14:58 -07:00
mwave
[PATCH] mwave: interesting flags savings
2007-02-20 17:10:14 -08:00
pcmcia
PCI: Cleanup the includes of <linux/pci.h>
2007-05-02 19:02:35 -07:00
rio
rio: typo in bitwise AND expression.
2007-02-17 18:57:09 +01:00
tpm
PCI: Cleanup the includes of <linux/pci.h>
2007-05-02 19:02:35 -07:00
watchdog
PCI: Cleanup the includes of <linux/pci.h>
2007-05-02 19:02:35 -07:00
.gitignore
[MIPS] Remove IT8172-based platforms, ITE 8172G and Globespan IVR support.
2006-10-03 17:59:17 +01:00
amiserial.c
[PATCH] CHAR-Amiserial: turn local_save_flags() + local_irq_disable() into local_irq_save()
2007-02-11 11:18:07 -08:00
apm-emulation.c
[APM] Add shared version of APM emulation
2007-02-09 17:08:57 +00:00
applicom.c
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
applicom.h
…
briq_panel.c
Revert "[POWERPC] Rename get_property to of_get_property: drivers"
2007-04-26 22:24:31 +10:00
cd1865.h
…
ChangeLog
…
consolemap.c
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
cp437.uni
…
cs5535_gpio.c
[PATCH] struct path: convert char-drivers
2006-12-08 08:28:44 -08:00
cyclades.c
[PATCH] cyclades: return closing_wait
2007-03-05 07:57:50 -08:00
decserial.c
[PATCH] dz: Fixes to make it work
2006-12-07 08:39:41 -08:00
defkeymap.c_shipped
…
defkeymap.map
…
digi1.h
…
digi.h
…
digiFep1.h
…
digiPCI.h
…
ds1286.c
[CHAR] ds1286: Fix handling of seconds in RTC_ALM_SET ioctl.
2007-03-08 01:10:30 +00:00
ds1302.c
[PATCH] DS1302: local_irq_disable() is redundant after local_irq_save()
2007-02-12 09:48:30 -08:00
ds1620.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
dsp56k.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
dtlk.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
ec3104_keyb.c
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
efirtc.c
[PATCH] make more file_operation structs static
2006-07-03 15:26:59 -07:00
epca.c
[PATCH] char/epca.c: remove unused function
2007-03-05 07:57:53 -08:00
epca.h
[PATCH] char: kill unneeded memsets
2006-10-04 07:55:13 -07:00
epcaconfig.h
…
esp.c
[PATCH] tty: switch to ktermios
2006-12-08 08:28:57 -08:00
generic_nvram.c
[PATCH] mark struct file_operations const 3
2007-02-12 09:48:45 -08:00
generic_serial.c
[PATCH] generic_serial: fix decoding of baud rate
2007-03-27 09:05:15 -07:00
genrtc.c
WorkStruct: make allyesconfig
2006-11-22 14:57:56 +00:00
hangcheck-timer.c
[PATCH] time: x86_64: convert x86_64 to use GENERIC_TIME
2007-02-16 08:14:00 -08:00
hpet.c
[PATCH] sysctl: remove insert_at_head from register_sysctl
2007-02-14 08:09:59 -08:00
hvc_beat.c
[POWERPC] Celleb: hypervisor console driver
2007-02-07 14:03:21 +11:00
hvc_console.c
drivers/char/hvc_console.c: cleanups
2007-05-08 11:14:59 -07:00
hvc_console.h
[POWERPC] Make the hvc_console output buffer size settable
2006-07-13 18:53:32 +10:00
hvc_iseries.c
[POWERPC] Rename get_property to of_get_property: partial drivers
2007-04-27 15:51:56 +10:00
hvc_rtas.c
[POWERPC] Make the hvc_console output buffer size settable
2006-07-13 18:53:32 +10:00
hvc_vio.c
[POWERPC] Rename get_property to of_get_property: partial drivers
2007-04-27 15:51:56 +10:00
hvcs.c
[PATCH] tty: switch to ktermios
2006-12-08 08:28:57 -08:00
hvsi.c
[POWERPC] Rename get_property to of_get_property: partial drivers
2007-04-27 15:51:56 +10:00
i8k.c
[PATCH] make more file_operation structs static
2006-07-03 15:26:59 -07:00
ip27-rtc.c
[PATCH] make more file_operation structs static
2006-07-03 15:26:59 -07:00
isicom.c
[PATCH] Char: tty_wakeup cleanup
2007-02-11 10:51:26 -08:00
istallion.c
[PATCH] Char: tty_wakeup cleanup
2007-02-11 10:51:26 -08:00
Kconfig
rename TANBAC TB0219 config
2007-05-07 12:13:04 -07:00
keyboard.c
Input: keyboard handler - use printk_ratelimit()
2007-04-12 01:30:52 -04:00
lcd.c
[CHAR] lcd: Fix two warnings.
2007-03-17 01:03:26 +00:00
lcd.h
[MIPS] Add MTD device support for Cobalt
2007-02-20 17:11:55 +00:00
lp.c
[PATCH] getting rid of all casts of k[cmz]alloc() calls
2006-12-13 09:05:58 -08:00
Makefile
rename TANBAC TB0219 config
2007-05-07 12:13:04 -07:00
mbcs.c
[PATCH] mark struct file_operations const 3
2007-02-12 09:48:45 -08:00
mbcs.h
…
mem.c
fix bogon in /dev/mem mmap'ing on nommu
2007-04-17 16:36:27 -07:00
misc.c
[PATCH] Correct misc_register return code handling in several drivers
2006-12-07 08:39:35 -08:00
mmtimer.c
[PATCH] Correct misc_register return code handling in several drivers
2006-12-07 08:39:35 -08:00
moxa.c
[PATCH] Char: moxa, pci probing
2007-02-11 10:51:30 -08:00
mspec.c
[PATCH] mark struct file_operations const 3
2007-02-12 09:48:45 -08:00
mxser_new.c
Char: mxser_new, fix TIOCMIWAIT
2007-04-24 08:23:07 -07:00
mxser_new.h
[PATCH] Char: mxser_new, upgrade to 1.9.15
2007-02-11 10:51:29 -08:00
mxser.c
Char: mxser, fix TIOCMIWAIT
2007-04-24 08:23:08 -07:00
mxser.h
[PATCH] mxser: remove ambiguous redefinition of INIT_WORK
2007-02-11 10:51:25 -08:00
n_hdlc.c
Remove obsolete #include <linux/config.h>
2006-06-30 19:25:36 +02:00
n_r3964.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
n_tty.c
[PATCH] tty: update the tty layer to work with struct pid
2007-02-12 09:48:32 -08:00
nsc_gpio.c
[PATCH] struct path: convert char-drivers
2006-12-08 08:28:44 -08:00
nvram.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
nwbutton.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
nwbutton.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
nwflash.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
pc8736x_gpio.c
[PATCH] drivers/char/pc8736x_gpio.c: remove unused static functions
2006-09-29 09:18:05 -07:00
ppdev.c
[PATCH] struct path: convert char-drivers
2006-12-08 08:28:44 -08:00
pty.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
random.c
[NET]: random functions can use nsec resolution instead of usec
2007-04-25 22:28:25 -07:00
raw.c
[PATCH] raw: don't allow the creation of a raw device with minor number 0
2007-02-11 10:51:34 -08:00
riscom8_reg.h
…
riscom8.c
[PATCH] Char: tty_wakeup cleanup
2007-02-11 10:51:26 -08:00
riscom8.h
…
rocket_int.h
…
rocket.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
rocket.h
…
rtc.c
[PATCH] sysctl: remove insert_at_head from register_sysctl
2007-02-14 08:09:59 -08:00
scc.h
…
scx200_gpio.c
[PATCH] scx200_gpio export cleanups
2006-09-29 09:18:06 -07:00
selection.c
[PATCH] tty locking on resize
2006-09-29 09:18:12 -07:00
ser_a2232.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
ser_a2232.h
…
ser_a2232fw.ax
…
ser_a2232fw.h
…
serial167.c
[PATCH] Char: serial167, cleanup
2007-02-11 10:51:28 -08:00
snsc_event.c
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
snsc.c
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
snsc.h
[IA64-SGI] Handle SC env. powerdown events
2006-01-26 13:32:26 -08:00
sonypi.c
sonypi: use mutex instead of semaphore
2007-04-28 22:13:34 -04:00
specialix_io8.h
…
specialix.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
stallion.c
[PATCH] Char: stallion, use dynamic dev
2006-12-08 08:28:59 -08:00
sx.c
[PATCH] sx: fix non-PCI build
2006-12-13 09:05:49 -08:00
sx.h
[PATCH] Char: sx, request regions
2006-12-08 08:28:59 -08:00
sxboards.h
…
sxwindow.h
…
synclink_gt.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
synclink.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
synclinkmp.c
[PATCH] Char: timers cleanup
2007-02-12 09:48:30 -08:00
sysrq.c
[PATCH] Add SysRq-Q to print timer_list debug info
2007-02-16 08:13:59 -08:00
tb0219.c
[PATCH] struct path: convert char-drivers
2006-12-08 08:28:44 -08:00
tipar.c
[PATCH] struct path: convert char-drivers
2006-12-08 08:28:44 -08:00
tlclk.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
toshiba.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
tty_io.c
tty_register_driver: only allocate tty instances when defined
2007-05-07 12:12:53 -07:00
tty_ioctl.c
[PATCH] tty: improve encode_baud_rate logic
2007-02-11 10:51:32 -08:00
vc_screen.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
viocons.c
[POWERPC] iSeries: fix viocons init
2006-12-20 16:37:48 +11:00
viotape.c
[PATCH] mark struct file_operations const 3
2007-02-12 09:48:45 -08:00
vme_scc.c
[PATCH] remove many unneeded #includes of sched.h
2007-02-14 08:09:54 -08:00
vr41xx_giu.c
[MIPS] Vr41xx: Fix after GENERIC_HARDIRQS_NO__DO_IRQ change
2007-01-23 18:26:47 +00:00
vt_ioctl.c
[PATCH] vt: fix potential race in VT_WAITACTIVE handler
2007-04-02 10:06:09 -07:00
vt.c
[PATCH] Initialise SAK member for each virtual console to prevent oops
2007-03-16 19:25:06 -07:00