[PATCH 5.19 076/101] net/mlxbf_gige: Fix an IS_ERR() vs NULL bug in mlxbf_gige_mdio_probe

From: Greg Kroah-Hartman
Date: Mon Oct 03 2022 - 03:23:16 EST


From: Peng Wu <wupeng58@xxxxxxxxxx>

[ Upstream commit 4774db8dfc6a2e6649920ebb2fc8e2f062c2080d ]

The devm_ioremap() function returns NULL on error, it doesn't return
error pointers.

Fixes: 3a1a274e933f ("mlxbf_gige: compute MDIO period based on i1clk")
Signed-off-by: Peng Wu <wupeng58@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220923023640.116057-1-wupeng58@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c
index 4aeb927c3715..aa780b1614a3 100644
--- a/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c
+++ b/drivers/net/ethernet/mellanox/mlxbf_gige/mlxbf_gige_mdio.c
@@ -246,8 +246,8 @@ int mlxbf_gige_mdio_probe(struct platform_device *pdev, struct mlxbf_gige *priv)
}

priv->clk_io = devm_ioremap(dev, res->start, resource_size(res));
- if (IS_ERR(priv->clk_io))
- return PTR_ERR(priv->clk_io);
+ if (!priv->clk_io)
+ return -ENOMEM;

mlxbf_gige_mdio_cfg(priv);

--
2.35.1