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| author | Ed Maste <emaste@FreeBSD.org> | 2022-03-21 16:15:22 +0000 |
|---|---|---|
| committer | Ed Maste <emaste@FreeBSD.org> | 2022-03-24 00:10:00 +0000 |
| commit | da03ac41c9bca270b491fcf4bf219c4108688a05 (patch) | |
| tree | c238ef72078e4eb77ccbc7b3b3250b67427b4722 | |
| parent | 4b1e2c2f77d3baea93ee511ef9a60ce1682dc6fb (diff) | |
| download | src-da03ac41c9bca270b491fcf4bf219c4108688a05.tar.gz src-da03ac41c9bca270b491fcf4bf219c4108688a05.zip | |
sound: test PCM_REGISTERED before PCM_DETACHING
PCM_REGISTERED(d) tests that d is not NULL, so perform that check first
as we may have cases where devclass_get_softc has a null entry.
PR: 262671
Reviewed by: hselasky
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D34648
| -rw-r--r-- | sys/dev/sound/pcm/mixer.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/sys/dev/sound/pcm/mixer.c b/sys/dev/sound/pcm/mixer.c index 89e78b036e94..bbc57f737036 100644 --- a/sys/dev/sound/pcm/mixer.c +++ b/sys/dev/sound/pcm/mixer.c @@ -153,7 +153,7 @@ mixer_set_softpcmvol(struct snd_mixer *m, struct snddev_info *d, struct pcm_channel *c; int dropmtx, acquiremtx; - if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) + if (!PCM_REGISTERED(d) || PCM_DETACHING(d)) return (EINVAL); if (mtx_owned(m->lock)) @@ -206,7 +206,7 @@ mixer_set_eq(struct snd_mixer *m, struct snddev_info *d, else return (EINVAL); - if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) + if (!PCM_REGISTERED(d) || PCM_DETACHING(d)) return (EINVAL); if (mtx_owned(m->lock)) @@ -1083,7 +1083,7 @@ mixer_open(struct cdev *i_dev, int flags, int mode, struct thread *td) m = i_dev->si_drv1; d = device_get_softc(m->dev); - if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) + if (!PCM_REGISTERED(d) || PCM_DETACHING(d)) return (EBADF); /* XXX Need Giant magic entry ??? */ @@ -1239,7 +1239,7 @@ mixer_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, return (EBADF); d = device_get_softc(((struct snd_mixer *)i_dev->si_drv1)->dev); - if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) + if (!PCM_REGISTERED(d) || PCM_DETACHING(d)) return (EBADF); PCM_GIANT_ENTER(d); @@ -1460,7 +1460,7 @@ mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi) for (i = 0; pcm_devclass != NULL && i < devclass_get_maxunit(pcm_devclass); i++) { d = devclass_get_softc(pcm_devclass, i); - if (PCM_DETACHING(d) || !PCM_REGISTERED(d)) + if (!PCM_REGISTERED(d) || PCM_DETACHING(d)) continue; /* XXX Need Giant magic entry */ |