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kern/48792: hdaudio(4) doesn't support mmap

>Number:         48792
>Category:       kern
>Synopsis:       hdaudio(4) doesn't support mmap
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Wed May 07 19:50:00 +0000 2014
>Originator:     David A. Holland
>Release:        NetBSD 6.99.40 (20140507)
System: NetBSD valkyrie 6.99.28 NetBSD 6.99.28 (VALKYRIE) #14: Tue Dec 10 
15:15:49 EST 2013  dholland@valkyrie:/usr/src/sys/arch/amd64/compile/VALKYRIE 
Architecture: x86_64
Machine: amd64

hdaudio(4) doesn't support mmap. grepping in src/dev/pci/hdaudio reveals

dev/pci/hdaudio/hdafg.c:        /* TODO: AUDIO_PROP_MMAP */
dev/pci/hdaudio/hdaudio.c:      .d_mmap = nommap,

One consequence of this is that sound in games/tyrquake doesn't work.

There doesn't seem to be a PR already on file for this, so I'm
creating one.



I have no idea what this entails.

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