openwrt/target/linux/generic/backport-5.15/730-15-v6.3-net-ethernet-mtk_wed-No-need-to-clear-memory-after-a.patch

From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Sun, 12 Feb 2023 07:51:51 +0100
Subject: [PATCH] net: ethernet: mtk_wed: No need to clear memory after a
 dma_alloc_coherent() call

dma_alloc_coherent() already clears the allocated memory, there is no need
to explicitly call memset().

Moreover, it is likely that the size in the memset() is incorrect and
should be "size * sizeof(*ring->desc)".

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/d5acce7dd108887832c9719f62c7201b4c83b3fb.1676184599.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

--- a/drivers/net/ethernet/mediatek/mtk_wed.c
+++ b/drivers/net/ethernet/mediatek/mtk_wed.c
@@ -779,7 +779,6 @@ mtk_wed_rro_ring_alloc(struct mtk_wed_de
 
 	ring->desc_size = sizeof(*ring->desc);
 	ring->size = size;
-	memset(ring->desc, 0, size);
 
 	return 0;
 }