linux-kernel - [PATCH] platform: Use IOMEM_ERR

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Message-Id: <320f2cc9ada5cb66845daa6bf259000b4cffd8b3.1758163939.git.xiaopei01@kylinos.cn>
Date: Thu, 18 Sep 2025 10:54:02 +0800
From: Pei Xiao <xiaopei01@...inos.cn>
To: gregkh@...uxfoundation.org,
	linux-kernel@...r.kernel.org
Cc: Pei Xiao <xiaopei01@...inos.cn>,
	kernel test robot <lkp@...el.com>
Subject: [PATCH] platform: Use IOMEM_ERR_PTR for ioremap error returns

Replace ERR_PTR() with IOMEM_ERR_PTR() in stubbed ioremap functions to
maintain type consistency. The functions return void __iomem * pointers
and IOMEM_ERR_PTR() provides proper type casting to avoid sparse warnings.

Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202509060307.JubgnLhc-lkp@intel.com/
Signed-off-by: Pei Xiao <xiaopei01@...inos.cn>
---
 include/linux/platform_device.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 074754c23d33..1d424fed1435 100644
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -80,7 +80,7 @@ static inline void __iomem *
 devm_platform_get_and_ioremap_resource(struct platform_device *pdev,
 				unsigned int index, struct resource **res)
 {
-	return ERR_PTR(-EINVAL);
+	return IOMEM_ERR_PTR(-EINVAL);
 }
 
 
@@ -88,14 +88,14 @@ static inline void __iomem *
 devm_platform_ioremap_resource(struct platform_device *pdev,
 			       unsigned int index)
 {
-	return ERR_PTR(-EINVAL);
+	return IOMEM_ERR_PTR(-EINVAL);
 }
 
 static inline void __iomem *
 devm_platform_ioremap_resource_byname(struct platform_device *pdev,
 				      const char *name)
 {
-	return ERR_PTR(-EINVAL);
+	return IOMEM_ERR_PTR(-EINVAL);
 }
 
 #endif
-- 
2.25.1