From: Ovidiu Panait <ovidiu.panait.oss@gmail.com>
Date: Sun, 29 Jun 2025 17:31:41 +0000 (+0300)
Subject: hwrng: mtk - handle devm_pm_runtime_enable errors
X-Git-Tag: v6.12.42~162
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=f63bd615e58f43dbe4b2e4c3f3ffa0bfb7766007;p=thirdparty%2Fkernel%2Fstable.git

hwrng: mtk - handle devm_pm_runtime_enable errors

[ Upstream commit 522a242a18adc5c63a24836715dbeec4dc3faee1 ]

Although unlikely, devm_pm_runtime_enable() call might fail, so handle
the return value.

Fixes: 78cb66caa6ab ("hwrng: mtk - Use devm_pm_runtime_enable")
Signed-off-by: Ovidiu Panait <ovidiu.panait.oss@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/char/hw_random/mtk-rng.c b/drivers/char/hw_random/mtk-rng.c
index 1e3048f2bb38f..6c4e40d0365f0 100644
--- a/drivers/char/hw_random/mtk-rng.c
+++ b/drivers/char/hw_random/mtk-rng.c
@@ -142,7 +142,9 @@ static int mtk_rng_probe(struct platform_device *pdev)
 	dev_set_drvdata(&pdev->dev, priv);
 	pm_runtime_set_autosuspend_delay(&pdev->dev, RNG_AUTOSUSPEND_TIMEOUT);
 	pm_runtime_use_autosuspend(&pdev->dev);
-	devm_pm_runtime_enable(&pdev->dev);
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
 
 	dev_info(&pdev->dev, "registered RNG driver\n");