diff options
| author | Jacob Meuser <jakemsr@cvs.openbsd.org> | 2008-12-31 11:18:48 +0000 |
|---|---|---|
| committer | Jacob Meuser <jakemsr@cvs.openbsd.org> | 2008-12-31 11:18:48 +0000 |
| commit | fa09d767c4d629f540fdba4a9cf7acafe2c7b12c (patch) | |
| tree | ebfce26d973a526652dc7ae1af6002a38285b1ca /sys/dev | |
| parent | 45d216c2281bba68e0a425755257c9915880babb (diff) | |
- always check that max channels isn't exceeded
- make the code readable and the comment understandable
Diffstat (limited to 'sys/dev')
| -rw-r--r-- | sys/dev/pci/azalia.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/sys/dev/pci/azalia.c b/sys/dev/pci/azalia.c index 1459a7a0eb2..1bd9a57b6cc 100644 --- a/sys/dev/pci/azalia.c +++ b/sys/dev/pci/azalia.c @@ -1,4 +1,4 @@ -/* $OpenBSD: azalia.c,v 1.97 2008/12/30 08:57:26 jakemsr Exp $ */ +/* $OpenBSD: azalia.c,v 1.98 2008/12/31 11:18:47 jakemsr Exp $ */ /* $NetBSD: azalia.c,v 1.20 2006/05/07 08:31:44 kent Exp $ */ /*- @@ -2929,20 +2929,17 @@ azalia_params2fmt(const audio_params_t *param, uint16_t *fmt) uint16_t ret; ret = 0; -#ifdef DIAGNOSTIC if (param->channels > HDA_MAX_CHANNELS) { printf("%s: too many channels: %u\n", __func__, param->channels); return EINVAL; } -#endif - /* allow any number of channels in a native format */ - if (param->sw_code == NULL) - ret |= param->channels - 1; - /* emulated mono uses 2 channel formats */ - else + /* Only mono is emulated, and it is emulated from stereo. */ + if (param->sw_code != NULL) ret |= 1; + else + ret |= param->channels - 1; switch (param->precision) { case 8: |