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sound: Remove leftover references to snd_clone

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The snd_clone framework does not exist as of
e8c0d15a64 ("sound: Get rid of snd_clone
and use DEVFS_CDEVPRIV(9)"), so remove leftover references to it from
unit.c.

Sponsored by:	The FreeBSD Foundation
MFC after:	2 months
Reviewed by:	markj
Differential Revision:	https://reviews.freebsd.org/D44758
This commit is contained in:
Christos Margiolis 2024-04-13 19:12:27 +02:00
parent 2b258dd17c
commit 068c675ca7
1 changed files with 5 additions and 15 deletions
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20
sys/dev/sound/unit.c
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@ -44,24 +44,17 @@
*
* eg: dsp0.p1 - u=0, d=p, c=1
* dsp1.vp0 - u=1, d=vp, c=0
* dsp0.10 - u=0, d=clone, c=allocated clone (see further explanation)
*
* Maximum unit of soundcards can be tuned through "hw.snd.maxunit", which
* is between SND_UNIT_UMIN (16) and SND_UNIT_UMAX (2048). By design,
* maximum allowable allocated channel is 256, with exception for clone
* devices which doesn't have any notion of channel numbering. The use of
* channel numbering in a clone device is simply to provide uniqueness among
* allocated clones. This also means that the maximum allowable clonable
* device is largely dependant and dynamically tuned depending on
* hw.snd.maxunit.
* Maximum unit of soundcards can be tuned through "hw.snd.maxunit", which is
* between SND_UNIT_UMIN (16) and SND_UNIT_UMAX (2048). By design, the maximum
* allowable allocated channel is 256.
*/
/* Default width */
static int snd_u_shift = 9; /* 0 - 0x1ff : 512 distinct soundcards */
static int snd_d_shift = 5; /* 0 - 0x1f : 32 distinct device types */
static int snd_c_shift = 10; /* 0 - 0x3ff : 1024 distinct channels
(256 limit "by design",
except for clone devices) */
(256 limit "by design") */
static int snd_unit_initialized = 0;
@ -184,10 +177,7 @@ snd_unit_init(void)
snd_u_shift++)
;
/*
* Make room for channels/clones allocation unit
* to fit within 24bit MAXMINOR limit.
*/
/* Make room for channels to fit within 24bit MAXMINOR limit. */
snd_c_shift = 24 - snd_u_shift - snd_d_shift;
}