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[ALSA] opti93x: optimize a register access 

Opti9xx drivers
When clearing some bits in a register, don't bother with the bits that
won't be changed anyway.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
This commit is contained in:
Clemens Ladisch 2005-09-05 10:36:27 +02:00 committed by Jaroslav Kysela
parent 4d23359b7e
commit db67319ac2
1 changed files with 1 additions and 2 deletions
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3
sound/isa/opti9xx/opti92x-ad1848.c
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@ -1038,8 +1038,7 @@ static int snd_opti93x_capture_prepare(snd_pcm_substream_t *substream)
chip->c_dma_size = size;
snd_opti93x_out_mask(chip, OPTi93X_IFACE_CONF,
OPTi93X_CAPTURE_ENABLE | OPTi93X_CAPTURE_PIO,
(unsigned char)~(OPTi93X_CAPTURE_ENABLE | OPTi93X_CAPTURE_PIO));
OPTi93X_CAPTURE_ENABLE | OPTi93X_CAPTURE_PIO, 0);
snd_dma_program(chip->dma2, runtime->dma_addr, size,
DMA_MODE_READ | DMA_AUTOINIT);