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ALSA: es1968: Add error handling for snd_pcm_hw_constraint_pow2()

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commit 9e000f1b7f31684cc5927e034360b87ac7919593 upstream.

The function snd_es1968_capture_open() calls the function
snd_pcm_hw_constraint_pow2(), but does not check its return
value. A proper implementation can be found in snd_cx25821_pcm_open().

Add error handling for snd_pcm_hw_constraint_pow2() and propagate its
error code.

Fixes: b942cf815b ("[ALSA] es1968 - Fix stuttering capture")
Cc: stable@vger.kernel.org # v2.6.22
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20250514092444.331-1-vulab@iscas.ac.cn
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wentao Liang
2025-05-14 17:24:44 +08:00
committed by Greg Kroah-Hartman
parent 124522cc6b
commit 2759938c4a
1 changed files with 4 additions and 2 deletions
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6
sound/pci/es1968.c
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@@ -1569,7 +1569,7 @@ static int snd_es1968_capture_open(struct snd_pcm_substream *substream)
struct snd_pcm_runtime *runtime = substream->runtime;
struct es1968 *chip = snd_pcm_substream_chip(substream);
struct esschan *es;
int apu1, apu2;
int err, apu1, apu2;
apu1 = snd_es1968_alloc_apu_pair(chip, ESM_APU_PCM_CAPTURE);
if (apu1 < 0)
@@ -1613,7 +1613,9 @@ static int snd_es1968_capture_open(struct snd_pcm_substream *substream)
runtime->hw = snd_es1968_capture;
runtime->hw.buffer_bytes_max = runtime->hw.period_bytes_max =
calc_available_memory_size(chip) - 1024; /* keep MIXBUF size */
snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
err = snd_pcm_hw_constraint_pow2(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES);
if (err < 0)
return err;
spin_lock_irq(&chip->substream_lock);
list_add(&es->list, &chip->substream_list);