Commit 947ca210 authored Jul 23, 2009 by Takashi Iwai

ALSA: pcm - Fix hwptr buffer-size overlap bug



The fix 79452f0a introduced another
bug due to the missing offset for the overlapped hwptr.
When the hwptr goes back to zero, the delta value has to be corrected
with the buffer size.  Otherwise this causes looping sounds.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

parent 89350640

sound/core/pcm_lib.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -256,7 +256,7 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream)
		delta = new_hw_ptr - hw_ptr_interrupt;
		}
		if (delta < 0) {
		if (runtime->periods == 1)
		if (runtime->periods == 1 \|\| new_hw_ptr < old_hw_ptr)
		delta += runtime->buffer_size;
		if (delta < 0) {
		hw_ptr_error(substream,