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ALSA: emu10k1: add error handling for snd_ctl_add

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When snd_ctl_add fails, the lack of error-handling code may
cause unexpected results.

This patch adds error-handling code after calling snd_ctl_add.

Signed-off-by: Zhouyang Jia <jiazhouyang09@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Zhouyang Jia 2018-06-11 16:18:40 +08:00 • committed by Takashi Iwai
commit 6d531e7b97
1 changed files with 3 additions and 1 deletions
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4
sound/pci/emu10k1/emupcm.c
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@ -1858,7 +1858,9 @@ int snd_emu10k1_pcm_efx(struct snd_emu10k1 *emu, int device)
if (!kctl)
return -ENOMEM;
kctl->id.device = device;
snd_ctl_add(emu->card, kctl);
err = snd_ctl_add(emu->card, kctl);
if (err < 0)
return err;
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(emu->pci), 64*1024, 64*1024);