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ALSA: pcm core - Avoid jiffies check for devices with BATCH flag
authorTakashi Iwai <tiwai@suse.de>
Tue, 28 Apr 2009 10:07:08 +0000 (12:07 +0200)
committerTakashi Iwai <tiwai@suse.de>
Tue, 28 Apr 2009 13:10:16 +0000 (15:10 +0200)
commit3e5b50165fd0be080044586f43fcdd460ed27610
tree54e6ed455de1f011b7da25234553c4b61f4a3f08tree | snapshot (tar.gz zip)
parent2008f137e92220b98120c4803499cdddb2b0fb06commit | diff
ALSA: pcm core - Avoid jiffies check for devices with BATCH flag

The hardware devices with SNDRV_PCM_INFO_BATCH flag can't give the
precise current position.  And such hardwares have often big FIFO
in addition to the ring buffer, and it screws up the jiffies check
in pcm_lib.c.

This patch adds a simple check of info flag so that the driver skips
the jiffies check in snd_pcm_period_elapsed() when BATCH flag is set.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/pcm_lib.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)