ALSA: hda - More relax for pending period handling
Since the pending periods are often bogus and take long time until
actually processed, it often results in a high CPU usage of the hd-audio
workq. Overall it's better to have low CPU consumption by avoiding a
too tight loop rather than the wake-up timing accuracy.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
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