From: Felix Gu <ustc.gu@gmail.com>
To: Mark Brown <broonie@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Ikjoon Jang <ikjn@chromium.org>
Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, Felix Gu <ustc.gu@gmail.com>
Subject: [PATCH] spi: mtk-nor: fix runtime PM usage count leak in probe error path
Date: Fri, 04 Sep 2026 23:51:29 +0800 [thread overview]
Message-ID: <20260904-mtk-nor-v1-1-cefdca098f83@gmail.com> (raw)
mtk_nor_probe() takes a runtime PM reference with
pm_runtime_get_noresume() before registering the controller, but the
error path never drops it.
Balance the get with pm_runtime_put_noidle() in the error path.
Fixes: 3bfd9103c7af ("spi: spi-mtk-nor: Add power management support")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
---
drivers/spi/spi-mtk-nor.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c
index 63f5139176c8..6b6e55d68048 100644
--- a/drivers/spi/spi-mtk-nor.c
+++ b/drivers/spi/spi-mtk-nor.c
@@ -929,6 +929,7 @@ static int mtk_nor_probe(struct platform_device *pdev)
return 0;
err_probe:
+ pm_runtime_put_noidle(&pdev->dev);
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
pm_runtime_dont_use_autosuspend(&pdev->dev);
---
base-commit: 9d80aa4617b32f5054c5aa471d06b66704854935
change-id: 20260904-mtk-nor-000ff9cb886f
Best regards,
--
Felix Gu <ustc.gu@gmail.com>
next reply other threads:[~2026-09-04 15:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-04 15:51 Felix Gu [this message]
2026-09-04 18:49 ` [PATCH] spi: mtk-nor: fix runtime PM usage count leak in probe error path Mark Brown
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