From: Thomas Meyer Date: Tue, 29 Nov 2011 20:08:00 +0000 (-0300) Subject: [media] pvrusb2: Use kcalloc instead of kzalloc to allocate array X-Git-Tag: v3.12-rc1~3230^2~526 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e79c70e6e59e764fbef2a68a7d7303c3286ea7a8;p=kernel%2Fkernel-generic.git [media] pvrusb2: Use kcalloc instead of kzalloc to allocate array 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 Acked-By: Mike Isely Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c index 122b457..ebc2c7e 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c +++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c @@ -2546,8 +2546,9 @@ struct pvr2_hdw *pvr2_hdw_create(struct usb_interface *intf, } /* 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;