Messages in this thread Patch in this message | | | From | Defang Bo <> | Subject | [PATCH] ALSA:usb-audio:check urb before kill it | Date | Sun, 27 Dec 2020 21:04:59 +0800 |
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Similar to commit<124751d5e>, there should be a check for urb before kill it.
Signed-off-by: Defang Bo <bodefang@126.com> --- sound/usb/mixer.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 81e987e..0223ef3 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -3589,8 +3589,10 @@ void snd_usb_mixer_disconnect(struct usb_mixer_interface *mixer) /* stop any bus activity of a mixer */ static void snd_usb_mixer_inactivate(struct usb_mixer_interface *mixer) { - usb_kill_urb(mixer->urb); - usb_kill_urb(mixer->rc_urb); + if (mixer->urb) + usb_kill_urb(mixer->urb); + if (mixer->rc_urb) + usb_kill_urb(mixer->rc_urb); } static int snd_usb_mixer_activate(struct usb_mixer_interface *mixer) -- 2.7.4
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