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mtd: rawnand: renesas: Handle devm_pm_runtime_enable() errors

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[ Upstream commit a3623e1ae1ed6be4d49b2ccb9996a9d2b65c1828 ]

devm_pm_runtime_enable() can fail due to memory allocation failures.
The current code ignores its return value and proceeds with
pm_runtime_resume_and_get(), which may operate on incorrectly
initialized runtime PM state.

Check the return value of devm_pm_runtime_enable() and return the
error code if it fails.

Fixes: 6a2277a0eb ("mtd: rawnand: renesas: Use runtime PM instead of the raw clock API")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Haotian Zhang
2025-11-24 00:35:51 +08:00
committed by Greg Kroah-Hartman
parent 660936cb51
commit d29034c70f
1 changed files with 4 additions and 1 deletions
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5
drivers/mtd/nand/raw/renesas-nand-controller.c
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@@ -1342,7 +1342,10 @@ static int rnandc_probe(struct platform_device *pdev)
if (IS_ERR(rnandc->regs))
return PTR_ERR(rnandc->regs);
devm_pm_runtime_enable(&pdev->dev);
ret = devm_pm_runtime_enable(&pdev->dev);
if (ret)
return ret;
ret = pm_runtime_resume_and_get(&pdev->dev);
if (ret < 0)
return ret;