diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:54 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-08 17:55:54 -0700 |
| commit | 9134d02bc0af4a8747d448d1f811ec5f8eb96df6 (patch) | |
| tree | 704c3e5dcc10f360815c4868a74711f82fb62e27 /sound/core/pcm_lib.c | |
| parent | bbb20089a3275a19e475dbc21320c3742e3ca423 (diff) | |
| parent | 80ffb3cceaefa405f2ecd46d66500ed8d53efe74 (diff) | |
Merge commit 'md/for-linus' into async-tx-next
Conflicts:
drivers/md/raid5.c
Diffstat (limited to 'sound/core/pcm_lib.c')
| -rw-r--r-- | sound/core/pcm_lib.c | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c index 333e4dd2945..72cfd47af6b 100644 --- a/sound/core/pcm_lib.c +++ b/sound/core/pcm_lib.c @@ -233,6 +233,18 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream) xrun(substream); return -EPIPE; } + if (xrun_debug(substream, 8)) { + char name[16]; + pcm_debug_name(substream, name, sizeof(name)); + snd_printd("period_update: %s: pos=0x%x/0x%x/0x%x, " + "hwptr=0x%lx, hw_base=0x%lx, hw_intr=0x%lx\n", + name, (unsigned int)pos, + (unsigned int)runtime->period_size, + (unsigned int)runtime->buffer_size, + (unsigned long)old_hw_ptr, + (unsigned long)runtime->hw_ptr_base, + (unsigned long)runtime->hw_ptr_interrupt); + } hw_base = runtime->hw_ptr_base; new_hw_ptr = hw_base + pos; hw_ptr_interrupt = runtime->hw_ptr_interrupt + runtime->period_size; @@ -244,18 +256,27 @@ static int snd_pcm_update_hw_ptr_interrupt(struct snd_pcm_substream *substream) delta = new_hw_ptr - hw_ptr_interrupt; } if (delta < 0) { - delta += runtime->buffer_size; + if (runtime->periods == 1 || new_hw_ptr < old_hw_ptr) + delta += runtime->buffer_size; if (delta < 0) { hw_ptr_error(substream, "Unexpected hw_pointer value " "(stream=%i, pos=%ld, intr_ptr=%ld)\n", substream->stream, (long)pos, (long)hw_ptr_interrupt); +#if 1 + /* simply skipping the hwptr update seems more + * robust in some cases, e.g. on VMware with + * inaccurate timer source + */ + return 0; /* skip this update */ +#else /* rebase to interrupt position */ hw_base = new_hw_ptr = hw_ptr_interrupt; /* align hw_base to buffer_size */ hw_base -= hw_base % runtime->buffer_size; delta = 0; +#endif } else { hw_base += runtime->buffer_size; if (hw_base >= runtime->boundary) @@ -344,6 +365,19 @@ int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream) xrun(substream); return -EPIPE; } + if (xrun_debug(substream, 16)) { + char name[16]; + pcm_debug_name(substream, name, sizeof(name)); + snd_printd("hw_update: %s: pos=0x%x/0x%x/0x%x, " + "hwptr=0x%lx, hw_base=0x%lx, hw_intr=0x%lx\n", + name, (unsigned int)pos, + (unsigned int)runtime->period_size, + (unsigned int)runtime->buffer_size, + (unsigned long)old_hw_ptr, + (unsigned long)runtime->hw_ptr_base, + (unsigned long)runtime->hw_ptr_interrupt); + } + hw_base = runtime->hw_ptr_base; new_hw_ptr = hw_base + pos; |