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- 20 Oct, 2008 1 commit
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Takashi Iwai authored
snd-pcsp driver takes chip->substream_lock together with PCM substream lock. These are even mixed up with hrtimer's lock, resulting in messy lock depencies. Right now, snd-pcsp driver resolves the deadlock by using HRTIMER_CB_SOFTIRQ. However, this isn't nice for a really fast path like bit-flipping. This patch introduces a tasklet for PCM period handling so that the hrtimer callback can be handled fast. This also reduce the use of chip->substream_lock to avoid deadlocks. It's still used in pointer callback, but even this could be removed with a proper barrier. Another good solution is to introduce async trigger callback. But, this will involve with a major rewrite of the PCM core code, so I take first this easy fix. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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- 20 May, 2008 1 commit
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Stas Sergeev authored
Change HRTIMER_CB_IRQSAFE to HRTIMER_CB_SOFTIRQ, as suggested by Thomas Gleixner. That solves the lock dependancy reported in Bug #10701. That also allows to call hrtimer_start() directly, tasklet "stupid hack" removed. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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- 05 May, 2008 1 commit
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Johann Felix Soden authored
sound/drivers/pcsp/pcsp.c: In function 'pcsp_suspend': sound/drivers/pcsp/pcsp.c:201: error: implicit declaration of function 'snd_pcm_suspend_all' Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net> CC: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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- 24 Apr, 2008 6 commits
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Stas Sergeev authored
Signed-off-by: Stas Sergeev <stsp@aknet.ru> (fixed invalid KERN_WARNING by tiwai) Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Mariusz Kozlowski authored
sound/drivers/pcsp/pcsp.c: In function 'snd_pcsp_create': sound/drivers/pcsp/pcsp.c:54: error: 'loops_per_jiffy' undeclared (first use in\ this function) sound/drivers/pcsp/pcsp.c:54: error: (Each undeclared identifier is reported on\ ly once sound/drivers/pcsp/pcsp.c:54: error: for each function it appears in.) Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Stas Sergeev authored
pcsp: locking fix. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Stas Sergeev authored
Simplify init code. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Stas Sergeev authored
- make pcsp_start_timer_tasklet static - remove redundant includes. <asm/i8253.h> is not available on all platforms. Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Stas Sergeev authored
Added PC-speaker sound driver (snd-pcsp). Signed-off-by: Stas Sergeev <stsp@aknet.ru> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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