[PATCH] [media] pvrusb2: Use kcalloc instead of kzalloc to allocate array

[PATCH] [media] pvrusb2: Use kcalloc instead of kzalloc to allocate array

[Thomas Meyer]

The advantage of kcalloc is, that will prevent integer overflows which could
result from the multiplication of number of elements and size and it is also
a bit nicer to read.

The semantic patch that makes this change is available
in https://lkml.org/lkml/2011/11/25/107

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
---

diff -u -p a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c 2011-11-13 11:07:30.836890817 +0100
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c 2011-11-28 19:57:31.228511987 +0100
@@ -2546,8 +2546,9 @@ struct pvr2_hdw *pvr2_hdw_create(struct
 	}
 
 	/* Define and configure additional controls from cx2341x module. */
-	hdw->mpeg_ctrl_info = kzalloc(
-		sizeof(*(hdw->mpeg_ctrl_info)) * MPEGDEF_COUNT, GFP_KERNEL);
+	hdw->mpeg_ctrl_info = kcalloc(MPEGDEF_COUNT,
+				      sizeof(*(hdw->mpeg_ctrl_info)),
+				      GFP_KERNEL);
 	if (!hdw->mpeg_ctrl_info) goto fail;
 	for (idx = 0; idx < MPEGDEF_COUNT; idx++) {
 		cptr = hdw->controls + idx + CTRLDEF_COUNT;