| Message ID | 1600601186-7420-10-git-send-email-Julia.Lawall@inria.fr (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | drop double zeroing | expand |
On 20-09-20, 13:26, Julia Lawall wrote: > sg_init_table zeroes its first argument, so the allocation of that argument > doesn't have to. > > the semantic patch that makes this change is as follows: > (http://coccinelle.lip6.fr/) Applied, thanks
diff -u -p a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -1227,7 +1227,7 @@ rcar_dmac_prep_dma_cyclic(struct dma_cha * Allocate the sg list dynamically as it would consume too much stack * space. */ - sgl = kcalloc(sg_len, sizeof(*sgl), GFP_NOWAIT); + sgl = kmalloc_array(sg_len, sizeof(*sgl), GFP_NOWAIT); if (!sgl) return NULL;
sg_init_table zeroes its first argument, so the allocation of that argument doesn't have to. the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,n,flags; @@ x = - kcalloc + kmalloc_array (n,sizeof(*x),flags) ... sg_init_table(x,n) // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr> --- drivers/dma/sh/rcar-dmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)