linux-kernel - [PATCH] net: Mellanox: Delete unnecessary checks before the function call "vunmap"

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Message-ID: <54D22B29.3020200@users.sourceforge.net>
Date:	Wed, 04 Feb 2015 15:22:33 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Eli Cohen <eli@...lanox.com>, netdev@...r.kernel.org,
	linux-rdma@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] net: Mellanox: Delete unnecessary checks before the function
 call "vunmap"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 4 Feb 2015 15:17:00 +0100

The vunmap() function performs also input parameter validation.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/net/ethernet/mellanox/mlx4/alloc.c      | 2 +-
 drivers/net/ethernet/mellanox/mlx5/core/alloc.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/alloc.c b/drivers/net/ethernet/mellanox/mlx4/alloc.c
index 963dd7e..06faa51 100644
--- a/drivers/net/ethernet/mellanox/mlx4/alloc.c
+++ b/drivers/net/ethernet/mellanox/mlx4/alloc.c
@@ -660,7 +660,7 @@ void mlx4_buf_free(struct mlx4_dev *dev, int size, struct mlx4_buf *buf)
 		dma_free_coherent(&dev->pdev->dev, size, buf->direct.buf,
 				  buf->direct.map);
 	else {
-		if (BITS_PER_LONG == 64 && buf->direct.buf)
+		if (BITS_PER_LONG == 64)
 			vunmap(buf->direct.buf);
 
 		for (i = 0; i < buf->nbufs; ++i)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
index 56779c1..201ca6d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/alloc.c
@@ -121,7 +121,7 @@ void mlx5_buf_free(struct mlx5_core_dev *dev, struct mlx5_buf *buf)
 		dma_free_coherent(&dev->pdev->dev, buf->size, buf->direct.buf,
 				  buf->direct.map);
 	else {
-		if (BITS_PER_LONG == 64 && buf->direct.buf)
+		if (BITS_PER_LONG == 64)
 			vunmap(buf->direct.buf);
 
 		for (i = 0; i < buf->nbufs; i++)
-- 
2.2.2

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