From b4dc97ab0a629eda8bda20d96ef47dac08a505d9 Mon Sep 17 00:00:00 2001
From: Yang Yingliang <yangyingliang@huawei.com>
Date: Thu, 9 Sep 2021 15:21:49 +0800
Subject: [PATCH] phy: Sparx5 Eth SerDes: Fix return value check in sparx5_serdes_probe()
Git-commit: b4dc97ab0a629eda8bda20d96ef47dac08a505d9
Patch-mainline: v5.16-rc1
References: git-fixes stable-5.14.19

In case of error, the function devm_ioremap() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value
check should be replaced with NULL test.

Fixes: 2ff8a1eeb5aa ("phy: Add Sparx5 ethernet serdes PHY driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210909072149.2934047-1-yangyingliang@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/phy/microchip/sparx5_serdes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/microchip/sparx5_serdes.c b/drivers/phy/microchip/sparx5_serdes.c
index 4076580fc2cd..ab1b0986aa67 100644
--- a/drivers/phy/microchip/sparx5_serdes.c
+++ b/drivers/phy/microchip/sparx5_serdes.c
@@ -2475,10 +2475,10 @@ static int sparx5_serdes_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 	iomem = devm_ioremap(priv->dev, iores->start, resource_size(iores));
-	if (IS_ERR(iomem)) {
+	if (!iomem) {
 		dev_err(priv->dev, "Unable to get serdes registers: %s\n",
 			iores->name);
-		return PTR_ERR(iomem);
+		return -ENOMEM;
 	}
 	for (idx = 0; idx < ARRAY_SIZE(sparx5_serdes_iomap); idx++) {
 		struct sparx5_serdes_io_resource *iomap = &sparx5_serdes_iomap[idx];
-- 
2.26.2