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![]() Currently in snd_pcm_update_hw_ptr0 during interrupt, we consider there were double acknowledged interrupts when: 1. HW reported pointer is smaller than expected, and 2. Time from last update time (hdelta) is over half a buffer time. However, when HW reported pointer is only a few bytes smaller than expected, and when hdelta is just a little larger than half a buffer time (e.g. ping-pong buffer), it wrongly treats this IRQ as double acknowledged. The condition #2 uses jiffies, but jiffies is not high resolution since it is integer. We should consider jiffies inaccuracy. Signed-off-by: Koro Chen <koro.chen@mediatek.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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.. | ||
oss | ||
seq | ||
compress_offload.c | ||
control_compat.c | ||
control.c | ||
ctljack.c | ||
device.c | ||
hrtimer.c | ||
hwdep_compat.c | ||
hwdep.c | ||
info_oss.c | ||
info.c | ||
init.c | ||
isadma.c | ||
jack.c | ||
Kconfig | ||
Makefile | ||
memalloc.c | ||
memory.c | ||
misc.c | ||
pcm_compat.c | ||
pcm_dmaengine.c | ||
pcm_lib.c | ||
pcm_memory.c | ||
pcm_misc.c | ||
pcm_native.c | ||
pcm_timer.c | ||
pcm_trace.h | ||
pcm.c | ||
rawmidi_compat.c | ||
rawmidi.c | ||
rtctimer.c | ||
sgbuf.c | ||
sound_oss.c | ||
sound.c | ||
timer_compat.c | ||
timer.c | ||
vmaster.c |