From: Felix Gu Date: Sat, 21 Mar 2026 09:04:43 +0000 (+0800) Subject: i3c: master: dw-i3c: Balance PM runtime usage count on probe failure X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=19d6dd322c3f05550606dbfcbafb5f6989975c02;p=thirdparty%2Fkernel%2Flinux.git 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: fba0e56ee752 ("i3c: dw: Disable runtime PM on Agilex5 to avoid bus hang on IBI") Signed-off-by: Felix Gu Reviewed-by: Frank Li Link: https://patch.msgid.link/20260321-dw-i3c-1-v1-1-821623aac7bb@gmail.com Signed-off-by: Alexandre Belloni --- diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c index 3379cb16eeca..b87073d2f8af 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -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);