[PATCH 5.10 062/135] ALSA: usb-audio: Fix superfluous autosuspend recovery

From: Greg Kroah-Hartman
Date: Tue Aug 10 2021 - 13:46:59 EST

From: Takashi Iwai <tiwai@xxxxxxx>

commit 66291b6adb66dd3bc96b0f594d88c2ff1300d95f upstream.

The change to restore the autosuspend from the disabled state uses a
wrong check: namely, it should have been the exact comparison of the
quirk_type instead of the bitwise and (&). Otherwise it matches
wrongly with the other quirk types.

Although re-enabling the autosuspend for the already enabled device
shouldn't matter much, it's better to fix the unbalanced call.

Fixes: 9799110825db ("ALSA: usb-audio: Disable USB autosuspend properly in setup_disable_autosuspend()")
Cc: <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/s5hr1flh9ov.wl-tiwai@xxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
sound/usb/card.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -907,7 +907,7 @@ static void usb_audio_disconnect(struct

- if (chip->quirk_type & QUIRK_SETUP_DISABLE_AUTOSUSPEND)
+ if (chip->quirk_type == QUIRK_SETUP_DISABLE_AUTOSUSPEND)