sound: Busy the device in sysctl_dev_pcm_mode()
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Authored by christos on Fri, Oct 9, 9:12 AM.

Details

Reviewers

markj
emaste
kib

Summary

PCM_LOCK does not protect anything here, since the counts are plain
ints, and the mixer pointer is set once in mixer_init() and never
cleared. It also does not protect against the device being freed.

Busy the device instead, as the other handlers do.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

Diff Detail

Repository

rG FreeBSD src repository

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Lint Skipped

Unit

Tests Skipped

Build Status

Buildable 77896
Build 74779: arc lint + arc unit

Event Timeline

christos created this revision.Fri, Oct 9, 9:12 AM

Herald added a subscriber: imp. · View Herald TranscriptFri, Oct 9, 9:12 AM

christos requested review of this revision.Fri, Oct 9, 9:12 AM

Harbormaster completed remote builds in B77896: Diff 189176.Fri, Oct 9, 9:12 AM

christos added a parent revision: D60507: sound: Busy devices before giving up the topology lock.Fri, Oct 9, 9:30 AM

christos added a child revision: D60512: sound: Stop taking PCM_LOCK to create and destroy channels.Fri, Oct 9, 9:33 AM

Revision Contents
Changeset List

Path

Size

sys/

dev/

sound/

pcm/

sound.c

4 lines

Diff 189176

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sound: Busy the device in sysctl_dev_pcm_mode()Needs ReviewPublicActions