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| author | Daniel Mack <zonque@gmail.com> | 2013-03-19 21:09:24 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2013-03-20 08:42:35 +0100 |
| commit | 4d7b86c98e445b075c2c4c3757eb6d3d6efbe72e (patch) | |
| tree | 17f3fbf12cf3aa1263f1d68f6d7cb3f1e2b5af9c /sound/usb/mixer.c | |
| parent | 61ac51301e6c6d4ed977d7674ce2b8e713619a9b (diff) | |
| download | lwn-4d7b86c98e445b075c2c4c3757eb6d3d6efbe72e.tar.gz lwn-4d7b86c98e445b075c2c4c3757eb6d3d6efbe72e.zip | |
ALSA: snd-usb: mixer: propagate errors up the call chain
In check_input_term() and parse_audio_feature_unit(), propagate the
error value that has been returned by a failing function instead of
-EINVAL. That helps cleaning up the error pathes in the mixer.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer.c')
| -rw-r--r-- | sound/usb/mixer.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 8eb84c0f7bf1..45cc0aff9c3e 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -715,8 +715,9 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_ case UAC2_CLOCK_SELECTOR: { struct uac_selector_unit_descriptor *d = p1; /* call recursively to retrieve the channel info */ - if (check_input_term(state, d->baSourceID[0], term) < 0) - return -ENODEV; + err = check_input_term(state, d->baSourceID[0], term); + if (err < 0) + return err; term->type = d->bDescriptorSubtype << 16; /* virtual type */ term->id = id; term->name = uac_selector_unit_iSelector(d); @@ -1357,8 +1358,9 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void return err; /* determine the input source type and name */ - if (check_input_term(state, hdr->bSourceID, &iterm) < 0) - return -EINVAL; + err = check_input_term(state, hdr->bSourceID, &iterm); + if (err < 0) + return err; master_bits = snd_usb_combine_bytes(bmaControls, csize); /* master configuration quirks */ |