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
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amd-rng.c	[PATCH] Fix HWRNG built-in initcalls priority	2007-01-11 18:18:21 -08:00
core.c	[PATCH] severing fs.h, radix-tree.h -> sched.h	2006-12-04 02:00:24 -05:00
geode-rng.c	[PATCH] Fix HWRNG built-in initcalls priority	2007-01-11 18:18:21 -08:00
intel-rng.c	Use stop_machine_run in the Intel RNG driver	2007-05-08 11:15:00 -07:00
ixp4xx-rng.c	[PATCH] Fix HWRNG built-in initcalls priority	2007-01-11 18:18:21 -08:00
Kconfig	[PATCH] allow hwrandom core to be a module	2006-12-07 08:39:39 -08:00
Makefile	[PATCH] allow hwrandom core to be a module	2006-12-07 08:39:39 -08:00
omap-rng.c
via-rng.c	PCI: Cleanup the includes of <linux/pci.h>	2007-05-02 19:02:35 -07:00