From b60fb519d7977e606621af85585c3677fc290ef8 Mon Sep 17 00:00:00 2001 From: Russell King Date: Tue, 25 Jan 2011 15:52:33 +0000 Subject: ALSA: AACI: fix multiple IRQ claiming Claiming the IRQ each time a playback or capture interface is opened is wasteful; the second copy of the registered handler is identical to the first and just wastes resources. Track the number of opens and only register the handler when necessary. Signed-off-by: Russell King --- sound/arm/aaci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'sound/arm/aaci.h') diff --git a/sound/arm/aaci.h b/sound/arm/aaci.h index 6a4a2eebdda1..04c4568413f4 100644 --- a/sound/arm/aaci.h +++ b/sound/arm/aaci.h @@ -226,6 +226,8 @@ struct aaci { struct snd_card *card; void __iomem *base; unsigned int fifosize; + unsigned int users; + struct mutex irq_lock; /* AC'97 */ struct mutex ac97_sem; -- cgit v1.2.3-58-ga151