netdev - [PATCH net-next] net: airoha: Fix a NULL vs IS_ERR() bug in airoha_npu_run

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Message-ID: <fc6d194e-6bf5-49ca-bc77-3fdfda62c434@sabinyo.mountain>
Date: Tue, 15 Jul 2025 18:01:10 -0500
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Rob Herring <robh@...nel.org>
Cc: Lorenzo Bianconi <lorenzo@...nel.org>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH net-next] net: airoha: Fix a NULL vs IS_ERR() bug in
 airoha_npu_run_firmware()

The devm_ioremap_resource() function returns error pointers.  It never
returns NULL.  Update the check to match.

Fixes: e27dba1951ce ("net: Use of_reserved_mem_region_to_resource{_byname}() for "memory-region"")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/net/ethernet/airoha/airoha_npu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/airoha/airoha_npu.c b/drivers/net/ethernet/airoha/airoha_npu.c
index 4e8deb87f751..5b0f66e9cdae 100644
--- a/drivers/net/ethernet/airoha/airoha_npu.c
+++ b/drivers/net/ethernet/airoha/airoha_npu.c
@@ -179,8 +179,8 @@ static int airoha_npu_run_firmware(struct device *dev, void __iomem *base,
 	}
 
 	addr = devm_ioremap_resource(dev, res);
-	if (!addr) {
-		ret = -ENOMEM;
+	if (IS_ERR(addr)) {
+		ret = PTR_ERR(addr);
 		goto out;
 	}
 
-- 
2.47.2