From 6d531e7b972cb62ded011c2dfcc2d9f72ea6c421 Mon Sep 17 00:00:00 2001 From: Zhouyang Jia Date: Mon, 11 Jun 2018 16:18:40 +0800 Subject: [PATCH] ALSA: emu10k1: add error handling for snd_ctl_add 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 Signed-off-by: Takashi Iwai --- sound/pci/emu10k1/emupcm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/pci/emu10k1/emupcm.c b/sound/pci/emu10k1/emupcm.c index d39458ab251f..69f9b100bd24 100644 --- a/sound/pci/emu10k1/emupcm.c +++ b/sound/pci/emu10k1/emupcm.c @@ -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);