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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-25 16:52:33 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-25 22:20:22 +0100 |
| commit | b60fb519d7977e606621af85585c3677fc290ef8 (patch) | |
| tree | c585e8f2e08717547a7d570ef84fbf2e8a6b874e /sound/arm/aaci.h | |
| parent | ALSA: AACI: fix timeout duration (diff) | |
| download | linux-b60fb519d7977e606621af85585c3677fc290ef8.tar.xz linux-b60fb519d7977e606621af85585c3677fc290ef8.zip | |
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 <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'sound/arm/aaci.h')
| -rw-r--r-- | sound/arm/aaci.h | 2 |
1 files changed, 2 insertions, 0 deletions
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; |