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be more verbose about failed unload attempts

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This commit is contained in:
Cameron Grant 2000-09-05 20:58:51 +00:00
parent 37ab02c0ed
commit c9b53085be
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=65487
1 changed files with 10 additions and 2 deletions
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12
sys/dev/sound/pcm/sound.c
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@ -331,8 +331,14 @@ pcm_unregister(device_t dev)
r = 0;
for (i = 0; i < d->chancount; i++)
if (d->ref[i]) r = EBUSY;
if (r) return r;
if (mixer_isbusy(d) || status_isopen) return EBUSY;
if (r) {
device_printf(dev, "unregister: channel busy");
return r;
}
if (mixer_isbusy(d)) {
device_printf(dev, "unregister: mixer busy");
return EBUSY;
}
pdev = makedev(CDEV_MAJOR, PCMMKMINOR(unit, SND_DEV_CTL, 0));
destroy_dev(pdev);
@ -631,6 +637,8 @@ sndpcm_modevent(module_t mod, int type, void *data)
case MOD_LOAD:
break;
case MOD_UNLOAD:
if (status_isopen)
return EBUSY;
if (status_dev)
destroy_dev(status_dev);
status_dev = 0;