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From: Leon Romanovsky <leon@kernel.org>
To: Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>,
	RDMA mailing list <linux-rdma@vger.kernel.org>,
	Artemy Kovalyov <artemyko@mellanox.com>
Subject: [PATCH rdma-rc] RDMA/mlx5: Return proper error value
Date: Tue, 29 Oct 2019 07:57:21 +0200
Message-ID: <20191029055721.7192-1-leon@kernel.org> (raw)

From: Leon Romanovsky <leonro@mellanox.com>

Returned value from mlx5_mr_cache_alloc() is checked to be error
or real pointer. Return proper error code instead of NULL which
is not checked later.

Fixes: 81713d3788d2 ("IB/mlx5: Add implicit MR support")
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
 drivers/infiniband/hw/mlx5/mr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 7019c12005f4..99d563dba91b 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -428,7 +428,7 @@ struct mlx5_ib_mr *mlx5_mr_cache_alloc(struct mlx5_ib_dev *dev, int entry)
 
 	if (entry < 0 || entry >= MAX_MR_CACHE_ENTRIES) {
 		mlx5_ib_err(dev, "cache entry %d is out of range\n", entry);
-		return NULL;
+		return ERR_PTR(-EINVAL);
 	}
 
 	ent = &cache->ent[entry];
-- 
2.20.1


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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-29  5:57 Leon Romanovsky [this message]
2019-10-31 18:37 ` Jason Gunthorpe

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