diff options
| author | Ingo Molnar <mingo@elte.hu> | 2007-11-16 15:20:28 +0100 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2008-01-31 17:29:26 +0100 |
| commit | 9b1fffddc80949fb4aa93fdcc57544bc2108ced3 (patch) | |
| tree | 2d4020236c2297bb973a65181dcf9e02e7fb5612 /sound/pci/hda/hda_intel.c | |
| parent | 27da183402ac5ca7d5a4c4704c4a405cd1009c43 (diff) | |
[ALSA] snd hda suspend latency: shorten codec read
not sleeping for every codec read/write but doing a short udelay and
a conditional reschedule has cut suspend+resume latency by about 1
second on my T60.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/pci/hda/hda_intel.c')
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 38c591649147..41edf85db38b 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -561,7 +561,8 @@ static unsigned int azx_rirb_get_response(struct hda_codec *codec) } if (!chip->rirb.cmds) return chip->rirb.res; /* the last value */ - schedule_timeout_uninterruptible(1); + udelay(10); + cond_resched(); } while (time_after_eq(timeout, jiffies)); if (chip->msi) { |