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authorTakashi Iwai <tiwai@suse.de>2023-01-02 18:07:57 +0100
committerTakashi Iwai <tiwai@suse.de>2023-01-04 09:53:21 +0100
commit0599313e26666e79f6e7fe1450588431b8cb25d5 (patch)
tree43a3230d0e0082c1c441cb4ba00cccb477636c7d /include/linux/qed
parenta5751933a7f6abbdad90d98f25a25bb4b133a9e6 (diff)
ALSA: usb-audio: Make sure to stop endpoints before closing EPs
At the PCM hw params, we may re-configure the endpoints and it's done by a temporary EP close followed by re-open. A potential problem there is that the EP might be already running internally at the PCM prepare stage; it's seen typically in the playback stream with the implicit feedback sync. As this stream start isn't tracked by the core PCM layer, we'd need to stop it explicitly, and that's the missing piece. This patch adds the stop_endpoints() call at snd_usb_hw_params() to assure the stream stop before closing the EPs. Fixes: bf6313a0ff76 ("ALSA: usb-audio: Refactor endpoint management") Link: https://lore.kernel.org/r/4e509aea-e563-e592-e652-ba44af6733fe@veniogames.com Link: https://lore.kernel.org/r/20230102170759.29610-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
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