When comparing a pointer, it's clearer to compare it to NULL than to 0.
Here is an excerpt of the semantic patch:
@@
expression *E;
@@
E ==
- 0
+ NULL
@@
expression *E;
@@
E !=
- 0
+ NULL
Signed-off-by: Yoann Padioleau <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
---
kernel/ioport.c | 6 +++---
kernel/pcic.c | 2 +-
kernel/prom.c | 2 +-
prom/bootstr.c | 2 +-
prom/tree.c | 2 +-
5 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 62182d2..3f1a8e2 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -181,7 +181,7 @@ static void __iomem *_sparc_alloc_io(uns
if (name == NULL) name = "???";
- if ((xres = xres_alloc()) != 0) {
+ if ((xres = xres_alloc()) != NULL) {
tack = xres->xname;
res = &xres->xres;
} else {
@@ -835,7 +835,7 @@ _sparc_io_get_info(char *buf, char **sta
for (r = ((struct resource *)data)->child; r != NULL; r = r->sibling) {
if (p + 32 >= e) /* Better than nothing */
break;
- if ((nm = r->name) == 0) nm = "???";
+ if ((nm = r->name) == NULL) nm = "???";
p += sprintf(p, "%016llx-%016llx: %s\n",
(unsigned long long)r->start,
(unsigned long long)r->end, nm);
@@ -858,7 +858,7 @@ _sparc_find_resource(struct resource *ro
{
struct resource *tmp;
- for (tmp = root->child; tmp != 0; tmp = tmp->sibling) {
+ for (tmp = root->child; tmp != NULL; tmp = tmp->sibling) {
if (tmp->start <= hit && tmp->end >= hit)
return tmp;
}
diff --git a/arch/sparc/kernel/pcic.c b/arch/sparc/kernel/pcic.c
index f2eae45..eace6e5 100644
--- a/arch/sparc/kernel/pcic.c
+++ b/arch/sparc/kernel/pcic.c
@@ -540,7 +540,7 @@ pcic_fill_irq(struct linux_pcic *pcic, s
prom_getstring(node, "name", namebuf, sizeof(namebuf));
}
- if ((p = pcic->pcic_imap) == 0) {
+ if ((p = pcic->pcic_imap) == NULL) {
dev->irq = 0;
return;
}
diff --git a/arch/sparc/kernel/prom.c b/arch/sparc/kernel/prom.c
index e3a5376..b5ab1a6 100644
--- a/arch/sparc/kernel/prom.c
+++ b/arch/sparc/kernel/prom.c
@@ -33,7 +33,7 @@ struct device_node *of_find_node_by_phan
{
struct device_node *np;
- for (np = allnodes; np != 0; np = np->allnext)
+ for (np = allnodes; np != NULL; np = np->allnext)
if (np->node == handle)
break;
diff --git a/arch/sparc/prom/bootstr.c b/arch/sparc/prom/bootstr.c
index cfdeac2..1f850b9 100644
--- a/arch/sparc/prom/bootstr.c
+++ b/arch/sparc/prom/bootstr.c
@@ -33,7 +33,7 @@ prom_getbootargs(void)
/* Start from 1 and go over fd(0,0,0)kernel */
for(iter = 1; iter < 8; iter++) {
arg = (*(romvec->pv_v0bootargs))->argv[iter];
- if(arg == 0) break;
+ if(arg == NULL) break;
while(*arg != 0) {
/* Leave place for space and null. */
if(cp >= barg_buf + BARG_LEN-2){
diff --git a/arch/sparc/prom/tree.c b/arch/sparc/prom/tree.c
index 5ec2465..782be75 100644
--- a/arch/sparc/prom/tree.c
+++ b/arch/sparc/prom/tree.c
@@ -309,7 +309,7 @@ int prom_setprop(int node, char *pname,
int ret;
if(size == 0) return 0;
- if((pname == 0) || (value == 0)) return 0;
+ if((pname == NULL) || (value == NULL)) return 0;
spin_lock_irqsave(&prom_lock, flags);
ret = prom_nodeops->no_setprop(node, pname, value, size);
restore_current();
-
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