[PATCH 09/14] dmaengine: rcar-dmac: drop double zeroing

From: Julia Lawall
Date: Sun Sep 20 2020 - 08:09:59 EST


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@xxxxxxxx>

---
drivers/dma/sh/rcar-dmac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

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;