linux-kernel - [PATCH] dmaengine: idxd: No need to clear memory after a dma_alloc

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Message-ID: <0bd20a5f09b3419e1d4d8c2b6786e886@208suo.com>
Date:   Fri, 21 Jul 2023 07:35:46 +0000
From:   sunran001@...suo.com
To:     vkoul@...nel.org
Cc:     dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] dmaengine: idxd: No need to clear memory after a
 dma_alloc_coherent() call

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

Signed-off-by: Ran Sun <sunran001@...suo.com>
---
  drivers/dma/idxd/device.c | 1 -
  1 file changed, 1 deletion(-)

diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index 7c74bc60f582..72330876d40a 100644
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -792,7 +792,6 @@ static int idxd_device_evl_setup(struct idxd_device 
*idxd)
  	evl->log_size = size;
  	evl->bmap = bmap;

-	memset(&evlcfg, 0, sizeof(evlcfg));
  	evlcfg.bits[0] = dma_addr & GENMASK(63, 12);
  	evlcfg.size = evl->size;