Arjan van de Ven c6482dde1c [PATCH] fix AB-BA deadlock inversion at cs46xx_dsp_remove_scb ... There is a code sequence where the locking is substream->self_group.lock -> ins->scbs[index].lock substream->self_group.lock is interrupt safe, and taken from irq context as well (trace is snipped for brevity) so what can happen is cpu 0 cpu 1 user context user context take ins->scbs[index].lock without disabling interrupts get substream->self_group.lock (irqsafe) try to get ins->scbs[index].lock (spins) interrupt happens try to get substream->self_group.lock (spins) which is an obvious AB-BA deadlock fix is to just take the lock with _irqsafe Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Jaroslav Kysela <perex@suse.cz> Acked-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		2006-07-04 10:24:57 -07:00
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imgs
cs46xx_image.h
cs46xx_lib.c	[PATCH] irq-flags: sound: Use the new IRQF_ constants	2006-07-02 13:58:54 -07:00
cs46xx_lib.h
cs46xx.c
dsp_spos_scb_lib.c	[PATCH] fix AB-BA deadlock inversion at cs46xx_dsp_remove_scb	2006-07-04 10:24:57 -07:00
dsp_spos.c
dsp_spos.h
Makefile