svn commit: r188063 - head/sys/kern

[Warner Losh]

Author: imp
Date: Tue Feb  3 07:54:42 2009
New Revision: 188063
URL: http://svn.freebsd.org/changeset/base/188063

Log:
  Use NULL in preference to 0 in pointer contexts.

Modified:
  head/sys/kern/subr_devstat.c
  head/sys/kern/subr_kobj.c

Modified: head/sys/kern/subr_devstat.c
==============================================================================
--- head/sys/kern/subr_devstat.c        Tue Feb  3 07:53:51 2009        
(r188062)
+++ head/sys/kern/subr_devstat.c        Tue Feb  3 07:54:42 2009        
(r188063)
@@ -407,10 +407,10 @@ sysctl_devstat(SYSCTL_HANDLER_ARGS)
  * Sysctl entries for devstat.  The first one is a node that all the rest
  * hang off of. 
  */
-SYSCTL_NODE(_kern, OID_AUTO, devstat, CTLFLAG_RD, 0, "Device Statistics");
+SYSCTL_NODE(_kern, OID_AUTO, devstat, CTLFLAG_RD, NULL, "Device Statistics");
 
 SYSCTL_PROC(_kern_devstat, OID_AUTO, all, CTLFLAG_RD|CTLTYPE_OPAQUE,
-    0, 0, sysctl_devstat, "S,devstat", "All devices in the devstat list");
+    NULL, 0, sysctl_devstat, "S,devstat", "All devices in the devstat list");
 /*
  * Export the number of devices in the system so that userland utilities
  * can determine how much memory to allocate to hold all the devices.
@@ -534,4 +534,4 @@ devstat_free(struct devstat *dsp)
 }
 
 SYSCTL_INT(_debug_sizeof, OID_AUTO, devstat, CTLFLAG_RD,
-    0, sizeof(struct devstat), "sizeof(struct devstat)");
+    NULL, sizeof(struct devstat), "sizeof(struct devstat)");

Modified: head/sys/kern/subr_kobj.c
==============================================================================
--- head/sys/kern/subr_kobj.c   Tue Feb  3 07:53:51 2009        (r188062)
+++ head/sys/kern/subr_kobj.c   Tue Feb  3 07:54:42 2009        (r188063)
@@ -207,7 +207,7 @@ kobj_lookup_method_class(kobj_class_t cl
                }
        }
 
-       return 0;
+       return NULL;
 }
 
 static kobj_method_t*
@@ -230,7 +230,7 @@ kobj_lookup_method_mi(kobj_class_t cls,
                }
        }
 
-       return 0;
+       return NULL;
 }
 
 kobj_method_t*
@@ -261,7 +261,7 @@ kobj_class_free(kobj_class_t cls)
 {
        int i;
        kobj_method_t *m;
-       void* ops = 0;
+       void* ops = NULL;
 
        KOBJ_ASSERT(MA_NOTOWNED);
        KOBJ_LOCK();
@@ -281,7 +281,7 @@ kobj_class_free(kobj_class_t cls)
                 * Free memory and clean up.
                 */
                ops = cls->ops;
-               cls->ops = 0;
+               cls->ops = NULL;
        }
        
        KOBJ_UNLOCK();
@@ -302,7 +302,7 @@ kobj_create(kobj_class_t cls,
         */
        obj = malloc(cls->size, mtype, mflags | M_ZERO);
        if (!obj)
-               return 0;
+               return NULL;
        kobj_init(obj, cls);
 
        return obj;
@@ -355,7 +355,7 @@ kobj_delete(kobj_t obj, struct malloc_ty
        if (!refs)
                kobj_class_free(cls);
 
-       obj->ops = 0;
+       obj->ops = NULL;
        if (mtype)
                free(obj, mtype);
 }
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