ALSA: asihpi - fix potential NULL pointer dereference
authorWei Yongjun <yongjun_wei@trendmicro.com.cn>
Mon, 11 Mar 2013 16:16:40 +0000 (00:16 +0800)
committerTakashi Iwai <tiwai@suse.de>
Tue, 12 Mar 2013 07:34:36 +0000 (08:34 +0100)
The dereference should be moved below the NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/asihpi/asihpi.c

index 3536b076b529ab8c25edf1292a62e713e841b800..0aabfedeecbae241b6ab4e182713a3d2e85b82e8 100644 (file)
@@ -2549,7 +2549,7 @@ static int snd_asihpi_sampleclock_add(struct snd_card_asihpi *asihpi,
 
 static int snd_card_asihpi_mixer_new(struct snd_card_asihpi *asihpi)
 {
-       struct snd_card *card = asihpi->card;
+       struct snd_card *card;
        unsigned int idx = 0;
        unsigned int subindex = 0;
        int err;
@@ -2557,6 +2557,7 @@ static int snd_card_asihpi_mixer_new(struct snd_card_asihpi *asihpi)
 
        if (snd_BUG_ON(!asihpi))
                return -EINVAL;
+       card = asihpi->card;
        strcpy(card->mixername, "Asihpi Mixer");
 
        err =