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Subject[PATCH 06/68] 0 -> NULL, for arch/frv
From

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 <padator@wanadoo.fr>
Cc: dhowells@redhat.com
Cc: akpm@linux-foundation.org
---
dma-alloc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/frv/mm/dma-alloc.c b/arch/frv/mm/dma-alloc.c
index dc6522c..eb67cef 100644
--- a/arch/frv/mm/dma-alloc.c
+++ b/arch/frv/mm/dma-alloc.c
@@ -61,7 +61,7 @@ static int map_page(unsigned long va, un

/* Use middle 10 bits of VA to index the second-level map */
pte = pte_alloc_kernel(pme, va);
- if (pte != 0) {
+ if (pte != NULL) {
err = 0;
set_pte(pte, mk_pte_phys(pa & PAGE_MASK, prot));
}
@@ -99,7 +99,7 @@ void *consistent_alloc(gfp_t gfp, size_t

/* allocate some common virtual space to map the new pages */
area = get_vm_area(size, VM_ALLOC);
- if (area == 0) {
+ if (area == NULL) {
free_pages(page, order);
return NULL;
}
-
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