linux-kernel - [PATCH] qed: Use zeroing memory allocator than allocator/memset

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Message-Id: <1514648224-6820-1-git-send-email-himanshujha199640@gmail.com>
Date:   Sat, 30 Dec 2017 21:07:04 +0530
From:   Himanshu Jha <himanshujha199640@...il.com>
To:     Ariel.Elior@...ium.com
Cc:     everest-linux-l2@...ium.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, mcgrof@...nel.org,
        Himanshu Jha <himanshujha199640@...il.com>
Subject: [PATCH] qed: Use zeroing memory allocator than allocator/memset

Use dma_zalloc_coherent and vzalloc for allocating zeroed
memory and remove unnecessary memset function.

Done using Coccinelle.
Generated-by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci
0-day tested with no failures.

Suggested-by: Luis R. Rodriguez <mcgrof@...nel.org>
Signed-off-by: Himanshu Jha <himanshujha199640@...il.com>
---
 drivers/net/ethernet/qlogic/qed/qed_cxt.c | 12 +++++-------
 drivers/net/ethernet/qlogic/qed/qed_l2.c  |  3 +--
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_cxt.c b/drivers/net/ethernet/qlogic/qed/qed_cxt.c
index afd07ad..f0a55d2 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_cxt.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_cxt.c
@@ -1055,11 +1055,10 @@ static int qed_ilt_blk_alloc(struct qed_hwfn *p_hwfn,
 		u32 size;
 
 		size = min_t(u32, sz_left, p_blk->real_size_in_page);
-		p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
-					    size, &p_phys, GFP_KERNEL);
+		p_virt = dma_zalloc_coherent(&p_hwfn->cdev->pdev->dev, size,
+					     &p_phys, GFP_KERNEL);
 		if (!p_virt)
 			return -ENOMEM;
-		memset(p_virt, 0, size);
 
 		ilt_shadow[line].p_phys = p_phys;
 		ilt_shadow[line].p_virt = p_virt;
@@ -2303,14 +2302,13 @@ qed_cxt_dynamic_ilt_alloc(struct qed_hwfn *p_hwfn,
 		goto out0;
 	}
 
-	p_virt = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
-				    p_blk->real_size_in_page,
-				    &p_phys, GFP_KERNEL);
+	p_virt = dma_zalloc_coherent(&p_hwfn->cdev->pdev->dev,
+				     p_blk->real_size_in_page, &p_phys,
+				     GFP_KERNEL);
 	if (!p_virt) {
 		rc = -ENOMEM;
 		goto out1;
 	}
-	memset(p_virt, 0, p_blk->real_size_in_page);
 
 	/* configuration of refTagMask to 0xF is required for RoCE DIF MR only,
 	 * to compensate for a HW bug, but it is configured even if DIF is not
diff --git a/drivers/net/ethernet/qlogic/qed/qed_l2.c b/drivers/net/ethernet/qlogic/qed/qed_l2.c
index 0853389..fd76b81 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_l2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_l2.c
@@ -223,10 +223,9 @@ _qed_eth_queue_to_cid(struct qed_hwfn *p_hwfn,
 	struct qed_queue_cid *p_cid;
 	int rc;
 
-	p_cid = vmalloc(sizeof(*p_cid));
+	p_cid = vzalloc(sizeof(*p_cid));
 	if (!p_cid)
 		return NULL;
-	memset(p_cid, 0, sizeof(*p_cid));
 
 	p_cid->opaque_fid = opaque_fid;
 	p_cid->cid = cid;
-- 
2.7.4