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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2020-01-13 11:46:28 +0300
committerTakashi Iwai <tiwai@suse.de>2020-01-13 12:43:27 +0300
commit3e2dc6bdb56893bc28257e482e1dbe5d39f313df (patch)
tree8776b64cd8261490b5218da868117420559a6fae /sound/firewire/dice
parent747d1f076de5a60770011f6e512de43298ec64cb (diff)
downloadlinux-3e2dc6bdb56893bc28257e482e1dbe5d39f313df.tar.xz
ALSA: dice: fix fallback from protocol extension into limited functionality
At failure of attempt to detect protocol extension, ALSA dice driver should be fallback to limited functionality. However it's not. This commit fixes it. Cc: <stable@vger.kernel.org> # v4.18+ Fixes: 58579c056c1c9 ("ALSA: dice: use extended protocol to detect available stream formats") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20200113084630.14305-2-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/dice')
-rw-r--r--sound/firewire/dice/dice-extension.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/firewire/dice/dice-extension.c b/sound/firewire/dice/dice-extension.c
index a63fcbc875ad..02f4a8318e38 100644
--- a/sound/firewire/dice/dice-extension.c
+++ b/sound/firewire/dice/dice-extension.c
@@ -159,8 +159,11 @@ int snd_dice_detect_extension_formats(struct snd_dice *dice)
int j;
for (j = i + 1; j < 9; ++j) {
- if (pointers[i * 2] == pointers[j * 2])
+ if (pointers[i * 2] == pointers[j * 2]) {
+ // Fallback to limited functionality.
+ err = -ENXIO;
goto end;
+ }
}
}