diff options
| author | Torstein Hegge <hegge@resisty.net> | 2013-03-19 17:12:14 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-04-14 06:44:30 -0700 |
| commit | 775a5ddce6018428fd8143d519b9114a86fa4b60 (patch) | |
| tree | 45f8d9d29db630f4b08af12b1285f60e41a9fc47 | |
| parent | d47b372591bb5e87f6534b3d66cf7d029eed237f (diff) | |
ALSA: usb: Parse UAC2 extension unit like for UAC1
commit 61ac51301e6c6d4ed977d7674ce2b8e713619a9b upstream.
UAC2_EXTENSION_UNIT_V2 differs from UAC1_EXTENSION_UNIT, but can be handled in
the same way when parsing the unit. Otherwise parse_audio_unit() fails when it
sees an extension unit on a UAC2 device.
UAC2_EXTENSION_UNIT_V2 is outside the range allocated by UAC1.
Signed-off-by: Torstein Hegge <hegge@resisty.net>
Acked-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Weng Meiling <wengmeiling.weng@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | sound/usb/mixer.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index a444f75eb518..2b67823e8205 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -722,7 +722,8 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_ case UAC1_PROCESSING_UNIT: case UAC1_EXTENSION_UNIT: /* UAC2_PROCESSING_UNIT_V2 */ - /* UAC2_EFFECT_UNIT */ { + /* UAC2_EFFECT_UNIT */ + case UAC2_EXTENSION_UNIT_V2: { struct uac_processing_unit_descriptor *d = p1; if (state->mixer->protocol == UAC_VERSION_2 && @@ -1975,6 +1976,8 @@ static int parse_audio_unit(struct mixer_build *state, int unitid) return parse_audio_extension_unit(state, unitid, p1); else /* UAC_VERSION_2 */ return parse_audio_processing_unit(state, unitid, p1); + case UAC2_EXTENSION_UNIT_V2: + return parse_audio_extension_unit(state, unitid, p1); default: snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); return -EINVAL; |