From 91105ed604e4ea7075a35a1ef8bc1782d347290e Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 19 May 2021 14:16:37 +0000 Subject: [PATCH] reset: mchp: sparx5: fix return value check in mchp_sparx5_map_io() In case of error, the function devm_platform_get_and_ioremap_resource() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: 453ed4283beb ("reset: mchp: sparx5: add switch reset driver") Reported-by: Hulk Robot Signed-off-by: Wei Yongjun Link: https://lore.kernel.org/r/20210519141638.3052456-1-weiyongjun1@huawei.com Signed-off-by: Philipp Zabel --- drivers/reset/reset-microchip-sparx5.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/reset/reset-microchip-sparx5.c b/drivers/reset/reset-microchip-sparx5.c index cff39a6..f01e7db 100644 --- a/drivers/reset/reset-microchip-sparx5.c +++ b/drivers/reset/reset-microchip-sparx5.c @@ -82,9 +82,9 @@ static int mchp_sparx5_map_io(struct platform_device *pdev, int index, void __iomem *mem; mem = devm_platform_get_and_ioremap_resource(pdev, index, &res); - if (!mem) { + if (IS_ERR(mem)) { dev_err(&pdev->dev, "Could not map resource %d\n", index); - return -ENXIO; + return PTR_ERR(mem); } sparx5_reset_regmap_config.name = res->name; map = devm_regmap_init_mmio(&pdev->dev, mem, &sparx5_reset_regmap_config); -- 2.7.4