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Code Issues Releases Activity

Stop USB audio transfers early so that any audio applications

Browse Source 
will time out and close opened /dev/dspX.Y device(s), if
any. This is a workaround because we cannot unregister PCM
devices while the audio character device is in use.

Add a missing inclusion guard.

MFC after:	1 weeks
This commit is contained in:
Hans Petter Selasky 2011-12-14 00:48:20 +00:00
parent 2e14174893
commit a6ed493726
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=228484
2 changed files with 14 additions and 1 deletions
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10
sys/dev/sound/usb/uaudio.c
View File

@ -765,7 +765,15 @@ uaudio_detach(device_t dev)
{
struct uaudio_softc *sc = device_get_softc(dev);
if (bus_generic_detach(dev)) {
/*
* Stop USB transfers early so that any audio applications
* will time out and close opened /dev/dspX.Y device(s), if
* any.
*/
uaudio_chan_stop(&sc->sc_play_chan);
uaudio_chan_stop(&sc->sc_rec_chan);
if (bus_generic_detach(dev) != 0) {
DPRINTF("detach failed!\n");
}
sbuf_delete(&sc->sc_sndstat);

5
sys/dev/sound/usb/uaudio.h
View File

@ -27,6 +27,9 @@
/* prototypes from "uaudio.c" used by "uaudio_pcm.c" */
#ifndef _UAUDIO_H_
#define _UAUDIO_H_
struct uaudio_chan;
struct uaudio_softc;
struct snd_dbuf;
@ -63,3 +66,5 @@ extern uint32_t uaudio_mixer_setrecsrc(struct uaudio_softc *sc, uint32_t src);
int uaudio_get_vendor(device_t dev);
int uaudio_get_product(device_t dev);
int uaudio_get_release(device_t dev);
#endif /* _UAUDIO_H_ */