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authorClemens Ladisch <clemens@ladisch.de>2008-06-16 08:13:52 -0400
committerTakashi Iwai <tiwai@suse.de>2008-06-16 09:16:11 -0400
commit9f9115d880ca550922434aee05ca18796c58eb99 (patch)
tree01fb4db5fa376da49a04ec55423e7dc40e928087 /sound/pci/oxygen
parent066519068ad2fbe98c7f45552b1f592903a9c8c8 (diff)
sound: oxygen: fix NULL pointer dereference when loading snd-oxygen
Check that model->control_filter is set before trying to call it. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/oxygen')
-rw-r--r--sound/pci/oxygen/oxygen_mixer.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/sound/pci/oxygen/oxygen_mixer.c b/sound/pci/oxygen/oxygen_mixer.c
index cc0cddadd589..6facac5aed90 100644
--- a/sound/pci/oxygen/oxygen_mixer.c
+++ b/sound/pci/oxygen/oxygen_mixer.c
@@ -936,11 +936,13 @@ static int add_controls(struct oxygen *chip,
936 936
937 for (i = 0; i < count; ++i) { 937 for (i = 0; i < count; ++i) {
938 template = controls[i]; 938 template = controls[i];
939 err = chip->model->control_filter(&template); 939 if (chip->model->control_filter) {
940 if (err < 0) 940 err = chip->model->control_filter(&template);
941 return err; 941 if (err < 0)
942 if (err == 1) 942 return err;
943 continue; 943 if (err == 1)
944 continue;
945 }
944 if (!strcmp(template.name, "Master Playback Volume") && 946 if (!strcmp(template.name, "Master Playback Volume") &&
945 chip->model->dac_tlv) { 947 chip->model->dac_tlv) {
946 template.tlv.p = chip->model->dac_tlv; 948 template.tlv.p = chip->model->dac_tlv;