[PATCH] spi: mtk-nor: fix runtime PM usage count leak in probe error path

From: Felix Gu

Date: Fri Sep 04 2026 - 12:14:58 EST


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@xxxxxxxxx>
---
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@xxxxxxxxx>