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 <tho...@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; -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
