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| author | Henry Lin <henryl@nvidia.com> | 2019-11-13 03:14:19 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-11-13 10:49:31 +0100 |
| commit | 528699317dd6dc722dccc11b68800cf945109390 (patch) | |
| tree | 9b584d372975ea20ecc3012fdb713f7a4b241aa2 /net | |
| parent | ALSA: hda: hdmi - fix pin setup on Tigerlake (diff) | |
| download | linux-528699317dd6dc722dccc11b68800cf945109390.tar.xz linux-528699317dd6dc722dccc11b68800cf945109390.zip | |
ALSA: usb-audio: not submit urb for stopped endpoint
While output urb's snd_complete_urb() is executing, calling
prepare_outbound_urb() may cause endpoint stopped before
prepare_outbound_urb() returns and result in next urb submitted
to stopped endpoint. usb-audio driver cannot re-use it afterwards as
the urb is still hold by usb stack.
This change checks EP_FLAG_RUNNING flag after prepare_outbound_urb() again
to let snd_complete_urb() know the endpoint already stopped and does not
submit next urb. Below kind of error will be fixed:
[ 213.153103] usb 1-2: timeout: still 1 active urbs on EP #1
[ 213.164121] usb 1-2: cannot submit urb 0, error -16: unknown error
Signed-off-by: Henry Lin <henryl@nvidia.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191113021420.13377-1-henryl@nvidia.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions