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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: 58579c056c ("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>
alistair/sunxi64-5.5-dsi
Takashi Sakamoto 2020-01-13 17:46:28 +09:00 committed by Takashi Iwai
parent 747d1f076d
commit 3e2dc6bdb5
1 changed files with 4 additions and 1 deletions
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5
sound/firewire/dice/dice-extension.c
View File

@ -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;
}
}
}