Messages in this thread Patch in this message | | | Subject | [PATCH] [media] uvcvideo: Use kcalloc instead of kzalloc to allocate array | From | Thomas Meyer <> | Date | Tue, 29 Nov 2011 22:08:00 +0100 |
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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/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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