[PATCH] [media] uvcvideo: Use kcalloc instead of kzalloc toallocate 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@xxxxxxxx>
---

diff -u -p a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c
--- a/drivers/media/video/uvc/uvc_ctrl.c 2011-11-28 19:36:47.613437745 +0100
+++ b/drivers/media/video/uvc/uvc_ctrl.c 2011-11-28 19:58:26.309317018 +0100
@@ -1861,7 +1861,7 @@ int uvc_ctrl_init_device(struct uvc_devi
 		if (ncontrols == 0)
 			continue;
 
-		entity->controls = kzalloc(ncontrols * sizeof(*ctrl),
+		entity->controls = kcalloc(ncontrols, sizeof(*ctrl),
 					   GFP_KERNEL);
 		if (entity->controls == NULL)
 			return -ENOMEM;
--
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