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| author | hselasky <hselasky@FreeBSD.org> | 2015-05-21 07:48:06 +0000 |
|---|---|---|
| committer | hselasky <hselasky@FreeBSD.org> | 2015-05-21 07:48:06 +0000 |
| commit | 620a331d5f293822cfeae338c1e25e3ae7027965 (patch) | |
| tree | 61ac766f1694c7422d61edd8c527d51b9e79187a /sys | |
| parent | 103346b78da88f8695c7ee43dbda0ac58e6db432 (diff) | |
| download | FreeBSD-src-620a331d5f293822cfeae338c1e25e3ae7027965.zip FreeBSD-src-620a331d5f293822cfeae338c1e25e3ae7027965.tar.gz | |
MFC r282017:
Allow DSP basename cloning to be disabled or enabled at boot and
runtime. This is useful when implementing OSS sound stacks in
userspace via libcuse for example.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/dev/sound/pcm/dsp.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/sys/dev/sound/pcm/dsp.c b/sys/dev/sound/pcm/dsp.c index 5195da2..6a5619f 100644 --- a/sys/dev/sound/pcm/dsp.c +++ b/sys/dev/sound/pcm/dsp.c @@ -48,6 +48,12 @@ SYSCTL_INT(_hw_snd, OID_AUTO, compat_linux_mmap, CTLFLAG_RW, &dsp_mmap_allow_prot_exec, 0, "linux mmap compatibility (-1=force disable 0=auto 1=force enable)"); +static int dsp_basename_clone = 1; +SYSCTL_INT(_hw_snd, OID_AUTO, basename_clone, CTLFLAG_RWTUN, + &dsp_basename_clone, 0, + "DSP basename cloning (0: Disable; 1: Enabled)"); +TUNABLE_INT("hw.snd.basename_clone", &dsp_basename_clone); + struct dsp_cdevinfo { struct pcm_channel *rdch, *wrch; struct pcm_channel *volch; @@ -2359,9 +2365,10 @@ dsp_clone(void *arg, devname = devcmp; devhw = dsp_cdevs[i].hw; devcmax = dsp_cdevs[i].max - 1; - if (strcmp(name, devcmp) == 0) - unit = snd_unit; - else if (dsp_stdclone(name, devcmp, devsep, + if (strcmp(name, devcmp) == 0) { + if (dsp_basename_clone != 0) + unit = snd_unit; + } else if (dsp_stdclone(name, devcmp, devsep, dsp_cdevs[i].use_sep, &unit, &cunit) != 0) { unit = -1; cunit = -1; |
