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Micro-tweaking.

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This commit is contained in:
Mark Murray 2004-06-20 13:50:50 +00:00
parent 5b89956dbb
commit 4456263490
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=130788
1 changed files with 10 additions and 7 deletions
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17
sys/dev/null/null.c
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@ -1,5 +1,6 @@
/*-
* Copyright (c) 2000 Mark R. V. Murray & Jeroen C. van Gelderen
* Copyright (c) 2001-2004 Mark R. V. Murray
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@ -76,7 +77,8 @@ static int
null_write(struct cdev *dev __unused, struct uio *uio, int flags __unused)
{
uio->uio_resid = 0;
return 0;
return (0);
}
/* ARGSUSED */
@ -105,7 +107,8 @@ zero_read(struct cdev *dev __unused, struct uio *uio, int flags __unused)
c = uio->uio_resid < PAGE_SIZE ? uio->uio_resid : PAGE_SIZE;
error = uiomove(zbuf, c, uio);
}
return error;
return (error);
}
/* ARGSUSED */
@ -121,20 +124,20 @@ null_modevent(module_t mod __unused, int type, void *data __unused)
GID_WHEEL, 0666, "zero");
null_dev = make_dev(&null_cdevsw, NULL_MINOR, UID_ROOT,
GID_WHEEL, 0666, "null");
return 0;
break;
case MOD_UNLOAD:
destroy_dev(null_dev);
destroy_dev(zero_dev);
free(zbuf, M_TEMP);
return 0;
break;
case MOD_SHUTDOWN:
return 0;
break;
default:
return EOPNOTSUPP;
}
return (0);
}
DEV_MODULE(null, null_modevent, NULL);