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Diffstat (limited to 'sound/drivers/dummy.c')
-rw-r--r--sound/drivers/dummy.c41
1 files changed, 25 insertions, 16 deletions
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index 4e4c69e..e5e749f 100644
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -47,9 +47,11 @@ MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
static int emu10k1_playback_constraints(struct snd_pcm_runtime *runtime)
{
int err;
- if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
+ err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
+ if (err < 0)
return err;
- if ((err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX)) < 0)
+ err = snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 256, UINT_MAX);
+ if (err) < 0)
return err;
return 0;
}
@@ -354,6 +356,7 @@ static int snd_card_dummy_playback_open(struct snd_pcm_substream *substream)
if ((dpcm = new_pcm_stream(substream)) == NULL)
return -ENOMEM;
runtime->private_data = dpcm;
+ /* makes the infrastructure responsible for freeing dpcm */
runtime->private_free = snd_card_dummy_runtime_free;
runtime->hw = snd_card_dummy_playback;
if (substream->pcm->device & 1) {
@@ -362,10 +365,9 @@ static int snd_card_dummy_playback_open(struct snd_pcm_substream *substream)
}
if (substream->pcm->device & 2)
runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID);
- if ((err = add_playback_constraints(runtime)) < 0) {
- kfree(dpcm);
+ err = add_playback_constraints(runtime);
+ if (err < 0)
return err;
- }
return 0;
}
@@ -379,6 +381,7 @@ static int snd_card_dummy_capture_open(struct snd_pcm_substream *substream)
if ((dpcm = new_pcm_stream(substream)) == NULL)
return -ENOMEM;
runtime->private_data = dpcm;
+ /* makes the infrastructure responsible for freeing dpcm */
runtime->private_free = snd_card_dummy_runtime_free;
runtime->hw = snd_card_dummy_capture;
if (substream->pcm->device == 1) {
@@ -387,10 +390,9 @@ static int snd_card_dummy_capture_open(struct snd_pcm_substream *substream)
}
if (substream->pcm->device & 2)
runtime->hw.info &= ~(SNDRV_PCM_INFO_MMAP|SNDRV_PCM_INFO_MMAP_VALID);
- if ((err = add_capture_constraints(runtime)) < 0) {
- kfree(dpcm);
+ err = add_capture_constraints(runtime);
+ if (err < 0)
return err;
- }
return 0;
}
@@ -433,8 +435,9 @@ static int __devinit snd_card_dummy_pcm(struct snd_dummy *dummy, int device,
struct snd_pcm *pcm;
int err;
- if ((err = snd_pcm_new(dummy->card, "Dummy PCM", device,
- substreams, substreams, &pcm)) < 0)
+ err = snd_pcm_new(dummy->card, "Dummy PCM", device,
+ substreams, substreams, &pcm);
+ if (err < 0)
return err;
dummy->pcm = pcm;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_card_dummy_playback_ops);
@@ -565,12 +568,14 @@ static int __devinit snd_card_dummy_new_mixer(struct snd_dummy *dummy)
unsigned int idx;
int err;
- snd_assert(dummy != NULL, return -EINVAL);
+ if (snd_BUG_ON(!dummy))
+ return -EINVAL;
spin_lock_init(&dummy->mixer_lock);
strcpy(card->mixername, "Dummy Mixer");
for (idx = 0; idx < ARRAY_SIZE(snd_dummy_controls); idx++) {
- if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy))) < 0)
+ err = snd_ctl_add(card, snd_ctl_new1(&snd_dummy_controls[idx], dummy));
+ if (err < 0)
return err;
}
return 0;
@@ -594,10 +599,12 @@ static int __devinit snd_dummy_probe(struct platform_device *devptr)
pcm_substreams[dev] = 1;
if (pcm_substreams[dev] > MAX_PCM_SUBSTREAMS)
pcm_substreams[dev] = MAX_PCM_SUBSTREAMS;
- if ((err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev])) < 0)
+ err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]);
+ if (err < 0)
goto __nodev;
}
- if ((err = snd_card_dummy_new_mixer(dummy)) < 0)
+ err = snd_card_dummy_new_mixer(dummy);
+ if (err < 0)
goto __nodev;
strcpy(card->driver, "Dummy");
strcpy(card->shortname, "Dummy");
@@ -605,7 +612,8 @@ static int __devinit snd_dummy_probe(struct platform_device *devptr)
snd_card_set_dev(card, &devptr->dev);
- if ((err = snd_card_register(card)) == 0) {
+ err = snd_card_register(card);
+ if (err == 0) {
platform_set_drvdata(devptr, card);
return 0;
}
@@ -668,7 +676,8 @@ static int __init alsa_card_dummy_init(void)
{
int i, cards, err;
- if ((err = platform_driver_register(&snd_dummy_driver)) < 0)
+ err = platform_driver_register(&snd_dummy_driver);
+ if (err < 0)
return err;
cards = 0;