diff options
Diffstat (limited to 'sound/usb')
| -rw-r--r-- | sound/usb/mixer.c | 10 | ||||
| -rw-r--r-- | sound/usb/pcm.c | 9 | ||||
| -rw-r--r-- | sound/usb/quirks-table.h | 3 |
3 files changed, 19 insertions, 3 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 97d6a18e6956..f7eb0d2f797b 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -1816,7 +1816,7 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, char *name) { struct uac_processing_unit_descriptor *desc = raw_desc; - int num_ins = desc->bNrInPins; + int num_ins; struct usb_mixer_elem_info *cval; struct snd_kcontrol *kctl; int i, err, nameid, type, len; @@ -1831,7 +1831,13 @@ static int build_audio_procunit(struct mixer_build *state, int unitid, 0, NULL, default_value_info }; - if (desc->bLength < 13 || desc->bLength < 13 + num_ins || + if (desc->bLength < 13) { + usb_audio_err(state->chip, "invalid %s descriptor (id %d)\n", name, unitid); + return -EINVAL; + } + + num_ins = desc->bNrInPins; + if (desc->bLength < 13 + num_ins || desc->bLength < num_ins + uac_processing_unit_bControlSize(desc, state->mixer->protocol)) { usb_audio_err(state->chip, "invalid %s descriptor (id %d)\n", name, unitid); return -EINVAL; diff --git a/sound/usb/pcm.c b/sound/usb/pcm.c index a9079654107c..1ea1384bc236 100644 --- a/sound/usb/pcm.c +++ b/sound/usb/pcm.c @@ -313,6 +313,9 @@ static int search_roland_implicit_fb(struct usb_device *dev, int ifnum, return 0; } +/* Setup an implicit feedback endpoint from a quirk. Returns 0 if no quirk + * applies. Returns 1 if a quirk was found. + */ static int set_sync_ep_implicit_fb_quirk(struct snd_usb_substream *subs, struct usb_device *dev, struct usb_interface_descriptor *altsd, @@ -381,7 +384,7 @@ add_sync_ep: subs->data_endpoint->sync_master = subs->sync_endpoint; - return 0; + return 1; } static int set_sync_endpoint(struct snd_usb_substream *subs, @@ -420,6 +423,10 @@ static int set_sync_endpoint(struct snd_usb_substream *subs, if (err < 0) return err; + /* endpoint set by quirk */ + if (err > 0) + return 0; + if (altsd->bNumEndpoints < 2) return 0; diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index 15cbe2565703..d32727c74a16 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -3321,6 +3321,9 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"), } } }, + { + .ifnum = -1 + }, } } }, |