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ALSA: pcm_lib: fix "something must be really wrong" condition

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When runtime->periods == 1 or when pointer crosses end of ring buffer,
the delta might be greater than buffer_size.

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela
2010-01-08 08:43:01 +01:00
parent 1250932e48
commit 7b3a177b0d
1 changed files with 1 additions and 1 deletions
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2
sound/core/pcm_lib.c
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@@ -362,7 +362,7 @@ static int snd_pcm_update_hw_ptr0(struct snd_pcm_substream *substream,
(unsigned long)runtime->hw_ptr_base); (unsigned long)runtime->hw_ptr_base);
} }
/* something must be really wrong */ /* something must be really wrong */
if (delta >= runtime->buffer_size) { if (delta >= runtime->buffer_size + runtime->period_size) {
hw_ptr_error(substream, hw_ptr_error(substream,
"Unexpected hw_pointer value %s" "Unexpected hw_pointer value %s"
"(stream=%i, pos=%ld, new_hw_ptr=%ld, " "(stream=%i, pos=%ld, new_hw_ptr=%ld, "