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ALSA: sb: fix a missing check of snd_ctl_add 

snd_ctl_add() could fail, so let's check its return value and return its
error code upstream upon failure.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Aditya Pakki 2019-01-06 11:16:00 -06:00 committed by Takashi Iwai
parent 02cc53e223
commit beae77170c
1 changed files with 7 additions and 3 deletions
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10
sound/isa/sb/sb16_main.c
View File

@ -879,10 +879,14 @@ int snd_sb16dsp_pcm(struct snd_sb *chip, int device)
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_sb16_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_sb16_capture_ops);
if (chip->dma16 >= 0 && chip->dma8 != chip->dma16)
snd_ctl_add(card, snd_ctl_new1(&snd_sb16_dma_control, chip));
else
if (chip->dma16 >= 0 && chip->dma8 != chip->dma16) {
err = snd_ctl_add(card, snd_ctl_new1(
&snd_sb16_dma_control, chip));
if (err)
return err;
} else {
pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
}
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_isa_data(),