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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - periodic audio skips with Intel HDA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=49608#c42">Comment # 42</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - periodic audio skips with Intel HDA"
href="https://bugs.freedesktop.org/show_bug.cgi?id=49608">bug 49608</a>
from <span class="vcard"><a class="email" href="mailto:superquad.vortex2@gmail.com" title="Raymond <superquad.vortex2@gmail.com>"> <span class="fn">Raymond</span></a>
</span></b>
<pre>hardware pointer should be increased by one period on every period_update, the
driver report lost interrupt when the elasped time is more than 1.5 period time
<a href="https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/core/pcm_lib.c">https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/core/pcm_lib.c</a>
no_jiffies_check:
if (delta > runtime->period_size + runtime->period_size / 2) {
hw_ptr_error(substream, in_interrupt,
"Lost interrupts?",
"(stream=%i, delta=%ld, new_hw_ptr=%ld, old_hw_ptr=%ld)\n",
substream->stream, (long)delta,
(long)new_hw_ptr,
(long)old_hw_ptr);
}</pre>
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