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[ALSA] Fix Oops with PCM OSS sync

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The PCM OSS emulation can cause Oops at sync operation due to the wrong
data size calculation.  Typically happening on Sparc64:
	http://lkml.org/lkml/2008/1/24/426

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai 2008-01-28 23:53:41 +01:00 committed by Jaroslav Kysela
parent ce875f079e
commit 4939c66034
1 changed files with 1 additions and 0 deletions
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sound/core/oss/pcm_oss.c
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@ -1621,6 +1621,7 @@ static int snd_pcm_oss_sync(struct snd_pcm_oss_file *pcm_oss_file)
snd_pcm_format_set_silence(runtime->format,
runtime->oss.buffer,
size1);
size1 /= runtime->channels; /* frames */
fs = snd_enter_user();
snd_pcm_lib_write(substream, (void __user *)runtime->oss.buffer, size1);
snd_leave_user(fs);