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ALSA: dice: fix fallback from protocol extension into limited functionality

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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>
This commit is contained in:
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
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@ -159,8 +159,11 @@ int snd_dice_detect_extension_formats(struct snd_dice *dice)
int j; int j;
for (j = i + 1; j < 9; ++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; goto end;
}
} }
} }