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authorTakashi Iwai <tiwai@suse.de>2009-06-08 15:58:48 +0200
committerTakashi Iwai <tiwai@suse.de>2009-06-08 16:01:47 +0200
commitc00701101b82f2bc61dfc259748ec6e5288af6a9 (patch)
treee3c9c70ed0c36387f030e268c5f7baf30ab25814 /sound
parentab1863fc9bc18c806338564124b1e5e7e3ef53d1 (diff)
ALSA: pcm - A helper function to compose PCM stream name for debug prints
Use a common helper function for the PCM stream name displayed in XRUN and buffer-pointer debug prints. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
-rw-r--r--sound/core/pcm_lib.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/sound/core/pcm_lib.c b/sound/core/pcm_lib.c
index adb306fd552..2288fa07bf5 100644
--- a/sound/core/pcm_lib.c
+++ b/sound/core/pcm_lib.c
@@ -136,6 +136,16 @@ void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_ufram
dump_stack(); \
} while (0)
+static void pcm_debug_name(struct snd_pcm_substream *substream,
+ char *name, size_t len)
+{
+ snprintf(name, len, "pcmC%dD%d%c:%d",
+ substream->pcm->card->number,
+ substream->pcm->device,
+ substream->stream ? 'c' : 'p',
+ substream->number);
+}
+
static void xrun(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
@@ -144,10 +154,9 @@ static void xrun(struct snd_pcm_substream *substream)
snd_pcm_gettime(runtime, (struct timespec *)&runtime->status->tstamp);
snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
if (xrun_debug(substream, 1)) {
- snd_printd(KERN_DEBUG "XRUN: pcmC%dD%d%c\n",
- substream->pcm->card->number,
- substream->pcm->device,
- substream->stream ? 'c' : 'p');
+ char name[16];
+ pcm_debug_name(substream, name, sizeof(name));
+ snd_printd(KERN_DEBUG "XRUN: %s\n", name);
dump_stack_on_xrun(substream);
}
}
@@ -163,9 +172,11 @@ snd_pcm_update_hw_ptr_pos(struct snd_pcm_substream *substream,
return pos; /* XRUN */
if (pos >= runtime->buffer_size) {
if (printk_ratelimit()) {
- snd_printd(KERN_ERR "BUG: stream = %i, pos = 0x%lx, "
+ char name[16];
+ pcm_debug_name(substream, name, sizeof(name));
+ snd_printd(KERN_ERR "BUG: %s, pos = 0x%lx, "
"buffer size = 0x%lx, period size = 0x%lx\n",
- substream->stream, pos, runtime->buffer_size,
+ name, pos, runtime->buffer_size,
runtime->period_size);
}
pos = 0;