diff options
| author | Alexandre Ratchov <ratchov@cvs.openbsd.org> | 2016-12-08 17:23:34 +0000 |
|---|---|---|
| committer | Alexandre Ratchov <ratchov@cvs.openbsd.org> | 2016-12-08 17:23:34 +0000 |
| commit | 15de74750099f64d786f4b9a2dcce0f0a5d7fef1 (patch) | |
| tree | f13224ba1dfabc7ed0e93bfe89010a175bfd0c2c /sys/dev/pci | |
| parent | 3efea1df3501f974a5175c9d083e5eac8f29ca7e (diff) | |
Return ENODEV if playback is requested on devices with no DACs or
recording is requested on devices with no ADCs. Many thanks to
Bryan Vyhmeister <bryan at bsdjournal.net> for testing & debugging this.
Diffstat (limited to 'sys/dev/pci')
| -rw-r--r-- | sys/dev/pci/azalia.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/dev/pci/azalia.c b/sys/dev/pci/azalia.c index 57ee558e308..50697901e2d 100644 --- a/sys/dev/pci/azalia.c +++ b/sys/dev/pci/azalia.c @@ -1,4 +1,4 @@ -/* $OpenBSD: azalia.c,v 1.229 2016/09/19 06:46:44 ratchov Exp $ */ +/* $OpenBSD: azalia.c,v 1.230 2016/12/08 17:23:33 ratchov Exp $ */ /* $NetBSD: azalia.c,v 1.20 2006/05/07 08:31:44 kent Exp $ */ /*- @@ -41,6 +41,7 @@ */ #include <sys/param.h> +#include <sys/fcntl.h> #include <sys/device.h> #include <sys/malloc.h> #include <sys/systm.h> @@ -3842,6 +3843,10 @@ azalia_open(void *v, int flags) DPRINTFN(1, ("%s: flags=0x%x\n", __func__, flags)); az = v; codec = &az->codecs[az->codecno]; + if ((flags & FWRITE) && codec->dacs.ngroups == 0) + return ENODEV; + if ((flags & FREAD) && codec->adcs.ngroups == 0) + return ENODEV; codec->running++; return 0; } |