From d5ad630b6dd00ea41e0c58b45c0912f72757b5cd Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 7 Mar 2007 15:55:59 +0100 Subject: [PATCH] [ALSA] Fix NULL dereference with null modelname Fix the NULL dereference of modelname option. The check is moved to find_codec_preset() now, too. Signed-off-by: Takashi Iwai Signed-off-by: Jaroslav Kysela --- sound/pci/hda/hda_codec.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 4c0a6a5b20..e768187465 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -403,6 +403,9 @@ static const struct hda_codec_preset *find_codec_preset(struct hda_codec *codec) { const struct hda_codec_preset **tbl, *preset; + if (codec->bus->modelname && !strcmp(codec->bus->modelname, "generic")) + return NULL; /* use the generic parser */ + for (tbl = hda_preset_tables; *tbl; tbl++) { for (preset = *tbl; preset->id; preset++) { u32 mask = preset->mask; @@ -573,8 +576,7 @@ int snd_hda_codec_new(struct hda_bus *bus, unsigned int codec_addr, 0); } - if (strcmp(codec->bus->modelname, "generic")) - codec->preset = find_codec_preset(codec); + codec->preset = find_codec_preset(codec); if (! *bus->card->mixername) snd_hda_get_codec_name(codec, bus->card->mixername, sizeof(bus->card->mixername)); -- 2.39.5