From: Kang Chen <void0red@hust.edu.cn>
Date: Wed, 19 Apr 2023 10:07:48 +0800
Subject: [PATCH] thermal/drivers/mediatek: Use devm_of_iomap to avoid resource
leak in mtk_thermal_probe
References: bsc#1012628
Patch-mainline: 6.3.2
Git-commit: f05c7b7d9ea9477fcc388476c6f4ade8c66d2d26
[ Upstream commit f05c7b7d9ea9477fcc388476c6f4ade8c66d2d26 ]
Smatch reports:
1. mtk_thermal_probe() warn: 'apmixed_base' from of_iomap() not released.
2. mtk_thermal_probe() warn: 'auxadc_base' from of_iomap() not released.
The original code forgets to release iomap resource when handling errors,
fix it by switch to devm_of_iomap.
Fixes: 89945047b166 ("thermal: mediatek: Add tsensor support for V2 thermal system")
Signed-off-by: Kang Chen <void0red@hust.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20230419020749.621257-1-void0red@hust.edu.cn
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/thermal/mediatek/auxadc_thermal.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/thermal/mediatek/auxadc_thermal.c b/drivers/thermal/mediatek/auxadc_thermal.c
index ab730f95..3372f7c2 100644
--- a/drivers/thermal/mediatek/auxadc_thermal.c
+++ b/drivers/thermal/mediatek/auxadc_thermal.c
@@ -1142,7 +1142,12 @@ static int mtk_thermal_probe(struct platform_device *pdev)
return -ENODEV;
}
- auxadc_base = of_iomap(auxadc, 0);
+ auxadc_base = devm_of_iomap(&pdev->dev, auxadc, 0, NULL);
+ if (IS_ERR(auxadc_base)) {
+ of_node_put(auxadc);
+ return PTR_ERR(auxadc_base);
+ }
+
auxadc_phys_base = of_get_phys_base(auxadc);
of_node_put(auxadc);
@@ -1158,7 +1163,12 @@ static int mtk_thermal_probe(struct platform_device *pdev)
return -ENODEV;
}
- apmixed_base = of_iomap(apmixedsys, 0);
+ apmixed_base = devm_of_iomap(&pdev->dev, apmixedsys, 0, NULL);
+ if (IS_ERR(apmixed_base)) {
+ of_node_put(apmixedsys);
+ return PTR_ERR(apmixed_base);
+ }
+
apmixed_phys_base = of_get_phys_base(apmixedsys);
of_node_put(apmixedsys);
--
2.35.3