svn commit: r188058 - head/sys/kern

[Warner Losh]

Author: imp
Date: Tue Feb  3 07:51:41 2009
New Revision: 188058
URL: http://svn.freebsd.org/changeset/base/188058

Log:
  Use NULL in preference to 0 for pointers.

Modified:
  head/sys/kern/subr_clist.c
  head/sys/kern/subr_taskqueue.c

Modified: head/sys/kern/subr_clist.c
==============================================================================
--- head/sys/kern/subr_clist.c	Tue Feb  3 07:51:11 2009	(r188057)
+++ head/sys/kern/subr_clist.c	Tue Feb  3 07:51:41 2009	(r188058)
@@ -43,7 +43,7 @@ SYSINIT(clist, SI_SUB_CLIST, SI_ORDER_FI
 
 static MALLOC_DEFINE(M_CLIST, "clist", "clist queue blocks");
 
-static struct cblock *cfreelist = 0;
+static struct cblock *cfreelist = NULL;
 int cfreecount = 0;
 static int cslushcount;
 static int ctotcount;
@@ -478,7 +478,7 @@ b_to_q(char *src, int amount, struct cli
 int
 unputc(struct clist *clistp)
 {
-	struct cblock *cblockp = 0, *cbp = 0;
+	struct cblock *cblockp = NULL, *cbp = NULL;
 	int s;
 	int chr = -1;
 

Modified: head/sys/kern/subr_taskqueue.c
==============================================================================
--- head/sys/kern/subr_taskqueue.c	Tue Feb  3 07:51:11 2009	(r188057)
+++ head/sys/kern/subr_taskqueue.c	Tue Feb  3 07:51:41 2009	(r188058)
@@ -114,7 +114,7 @@ _taskqueue_create(const char *name, int 
 
 	queue = malloc(sizeof(struct taskqueue), M_TASKQUEUE, mflags | M_ZERO);
 	if (!queue)
-		return 0;
+		return NULL;
 
 	STAILQ_INIT(&queue->tq_queue);
 	queue->tq_name = name;
@@ -213,7 +213,7 @@ taskqueue_enqueue(struct taskqueue *queu
 	if (!prev || prev->ta_priority >= task->ta_priority) {
 		STAILQ_INSERT_TAIL(&queue->tq_queue, task, ta_link);
 	} else {
-		prev = 0;
+		prev = NULL;
 		for (ins = STAILQ_FIRST(&queue->tq_queue); ins;
 		     prev = ins, ins = STAILQ_NEXT(ins, ta_link))
 			if (ins->ta_priority < task->ta_priority)
@@ -423,11 +423,11 @@ taskqueue_thread_enqueue(void *context)
 	wakeup_one(tq);
 }
 
-TASKQUEUE_DEFINE(swi, taskqueue_swi_enqueue, 0,
+TASKQUEUE_DEFINE(swi, taskqueue_swi_enqueue, NULL,
 		 swi_add(NULL, "task queue", taskqueue_swi_run, NULL, SWI_TQ,
 		     INTR_MPSAFE, &taskqueue_ih)); 
 
-TASKQUEUE_DEFINE(swi_giant, taskqueue_swi_giant_enqueue, 0,
+TASKQUEUE_DEFINE(swi_giant, taskqueue_swi_giant_enqueue, NULL,
 		 swi_add(NULL, "Giant taskq", taskqueue_swi_giant_run,
 		     NULL, SWI_TQ_GIANT, 0, &taskqueue_giant_ih)); 
 
@@ -462,6 +462,6 @@ taskqueue_fast_run(void *dummy)
 	taskqueue_run(taskqueue_fast);
 }
 
-TASKQUEUE_FAST_DEFINE(fast, taskqueue_fast_enqueue, 0,
+TASKQUEUE_FAST_DEFINE(fast, taskqueue_fast_enqueue, NULL,
 	swi_add(NULL, "Fast task queue", taskqueue_fast_run, NULL,
 	SWI_TQ_FAST, INTR_MPSAFE, &taskqueue_fast_ih));