Differential D60515

sound: Retire PCM_LOCK in sound_oss_card_info()
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Authored by christos on Fri, Oct 9, 10:11 AM.

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markj
emaste
kib

Summary

The handler reads the device name, its description and the status
string. All three are set before pcm_register() makes the device
visible, and never change afterwards. The topology lock, which is held
across the whole function, makes sure the device is not freed.

MFC after: 2 weeks
Sponsored by: The FreeBSD Foundation

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Repository

rG FreeBSD src repository

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Build Status

Buildable 77902
Build 74785: arc lint + arc unit

Event Timeline

christos created this revision.Fri, Oct 9, 10:11 AM

Herald added a subscriber: imp. · View Herald TranscriptFri, Oct 9, 10:11 AM

christos requested review of this revision.Fri, Oct 9, 10:11 AM

Harbormaster completed remote builds in B77902: Diff 189182.Fri, Oct 9, 10:11 AM

christos added a parent revision: D60514: sound: Retire PCM_LOCK in SNDCTL_DSP_GETCAPS.Fri, Oct 9, 10:11 AM

christos added a child revision: D60517: sound: Document the locking protocol.Fri, Oct 9, 11:08 AM

markj accepted this revision.Tue, Oct 20, 2:35 PM

This revision is now accepted and ready to land.Tue, Oct 20, 2:35 PM

Revision Contents
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Path

Size

sys/

dev/

sound/

pcm/

5 lines

Diff 189182

sys/dev/sound/pcm/sound.c

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