diff mbox series

[12/14,media] saa7146: drop double zeroing

Message ID 1600601186-7420-13-git-send-email-Julia.Lawall@inria.fr (mailing list archive)
State New, archived
Headers show
Series drop double zeroing | expand

Commit Message

Julia Lawall Sept. 20, 2020, 11:26 a.m. UTC 
sg_init_table zeroes its first argument, so the allocation of that argument
doesn't have to.

the semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,n,flags;
@@

x = 
- kcalloc
+ kmalloc_array
  (n,sizeof(struct scatterlist),flags)
...
sg_init_table(x,n)
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>

---
 drivers/media/common/saa7146/saa7146_core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff -u -p a/drivers/media/common/saa7146/saa7146_core.c b/drivers/media/common/saa7146/saa7146_core.c
--- a/drivers/media/common/saa7146/saa7146_core.c
+++ b/drivers/media/common/saa7146/saa7146_core.c
@@ -140,7 +140,7 @@  static struct scatterlist* vmalloc_to_sg
 	struct page *pg;
 	int i;
 
-	sglist = kcalloc(nr_pages, sizeof(struct scatterlist), GFP_KERNEL);
+	sglist = kmalloc_array(nr_pages, sizeof(struct scatterlist), GFP_KERNEL);
 	if (NULL == sglist)
 		return NULL;
 	sg_init_table(sglist, nr_pages);