From e20d136ec7d6f309989c447638365840d3424c8e Mon Sep 17 00:00:00 2001
From: Zheng Yongjun <zhengyongjun3@huawei.com>
Date: Mon, 25 Apr 2022 09:29:29 +0000
Subject: [PATCH] thermal/drivers/broadcom: Fix potential NULL dereference in sr_thermal_probe
Git-commit: e20d136ec7d6f309989c447638365840d3424c8e
Patch-mainline: v5.19-rc1
References: git-fixes
platform_get_resource() may return NULL, add proper check to
avoid potential NULL dereferencing.
Fixes: 250e211057c72 ("thermal: broadcom: Add Stingray thermal driver")
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20220425092929.90412-1-zhengyongjun3@huawei.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/thermal/broadcom/sr-thermal.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/thermal/broadcom/sr-thermal.c b/drivers/thermal/broadcom/sr-thermal.c
index 475ce2900771..85ab9edd580c 100644
--- a/drivers/thermal/broadcom/sr-thermal.c
+++ b/drivers/thermal/broadcom/sr-thermal.c
@@ -60,6 +60,9 @@ static int sr_thermal_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENOENT;
+
sr_thermal->regs = (void __iomem *)devm_memremap(&pdev->dev, res->start,
resource_size(res),
MEMREMAP_WB);
--
2.35.3