[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>
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