Commit 19d6dd32 authored by Felix Gu's avatar Felix Gu Committed by Alexandre Belloni
Browse files

i3c: master: dw-i3c: Balance PM runtime usage count on probe failure 



When DW_I3C_DISABLE_RUNTIME_PM_QUIRK is set, the probe function calls
pm_runtime_get_noresume() to prevent runtime suspend. However, if
i3c_master_register() fails, the error path does not balance this
call, leaving the usage count incremented.

Add pm_runtime_put_noidle() in the error cleanup path to properly
balance the usage count.

Fixes: fba0e56e ("i3c: dw: Disable runtime PM on Agilex5 to avoid bus hang on IBI")
Signed-off-by: default avatarFelix Gu <ustc.gu@gmail.com>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260321-dw-i3c-1-v1-1-821623aac7bb@gmail.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent bef1eef6

drivers/i3c/master/dw-i3c-master.c

+2 −0
Original line number Diff line number Diff line
@@ -1667,6 +1667,8 @@ int dw_i3c_common_probe(struct dw_i3c_master *master, 
	return 0;



err_disable_pm:

	if (master->quirks & DW_I3C_DISABLE_RUNTIME_PM_QUIRK)

		pm_runtime_put_noidle(&pdev->dev);

	pm_runtime_disable(&pdev->dev);

	pm_runtime_set_suspended(&pdev->dev);

	pm_runtime_dont_use_autosuspend(&pdev->dev);