[PATCH 3.14 29/76] ALSA: usb-audio: Minor code cleanup in create_fixed_stream_quirk()

From: Greg Kroah-Hartman
Date: Sun Apr 10 2016 - 15:36:06 EST


3.14-stable review patch. If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@xxxxxxx>

commit 902eb7fd1e4af3ac69b9b30f8373f118c92b9729 upstream.

Just a minor code cleanup: unify the error paths.

Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
sound/usb/quirks.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)

--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -155,23 +155,18 @@ static int create_fixed_stream_quirk(str
stream = (fp->endpoint & USB_DIR_IN)
? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK;
err = snd_usb_add_audio_stream(chip, stream, fp);
- if (err < 0) {
- kfree(fp);
- kfree(rate_table);
- return err;
- }
+ if (err < 0)
+ goto error;
if (fp->iface != get_iface_desc(&iface->altsetting[0])->bInterfaceNumber ||
fp->altset_idx >= iface->num_altsetting) {
- kfree(fp);
- kfree(rate_table);
- return -EINVAL;
+ err = -EINVAL;
+ goto error;
}
alts = &iface->altsetting[fp->altset_idx];
altsd = get_iface_desc(alts);
if (altsd->bNumEndpoints < 1) {
- kfree(fp);
- kfree(rate_table);
- return -EINVAL;
+ err = -EINVAL;
+ goto error;
}

fp->protocol = altsd->bInterfaceProtocol;
@@ -184,6 +179,11 @@ static int create_fixed_stream_quirk(str
snd_usb_init_pitch(chip, fp->iface, alts, fp);
snd_usb_init_sample_rate(chip, fp->iface, alts, fp, fp->rate_max);
return 0;
+
+ error:
+ kfree(fp);
+ kfree(rate_table);
+ return err;
}

static int create_auto_pcm_quirk(struct snd_usb_audio *chip,