linux-kernel - [PATCH 2/2] memory: stm32_omm: Fix NULL vs IS

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Message-ID: <a1645f1eedaa9b2ae62ac07feed0552eea75bc46.1746781081.git.dan.carpenter@linaro.org>
Date: Fri, 9 May 2025 14:04:37 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Patrice Chotard <patrice.chotard@...s.st.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Christophe Kerello <christophe.kerello@...s.st.com>,
	linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 2/2] memory: stm32_omm: Fix NULL vs IS_ERR() check in probe()

The platform_get_resource_byname() function returns NULL on error.  It
doesn't return error pointers.  Update the check to match.

Fixes: 8181d061dcff ("memory: Add STM32 Octo Memory Manager driver")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/memory/stm32_omm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/memory/stm32_omm.c b/drivers/memory/stm32_omm.c
index fa0f75e4a6e8..c8de785401f2 100644
--- a/drivers/memory/stm32_omm.c
+++ b/drivers/memory/stm32_omm.c
@@ -320,8 +320,8 @@ static int stm32_omm_probe(struct platform_device *pdev)
 		return PTR_ERR(omm->io_base);
 
 	omm->mm_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "memory_map");
-	if (IS_ERR(omm->mm_res))
-		return PTR_ERR(omm->mm_res);
+	if (!omm->mm_res)
+		return -ENODEV;
 
 	/* check child's access */
 	for_each_child_of_node_scoped(dev->of_node, child) {
-- 
2.47.2