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usb: chipidea: fix usage_count leak when autosuspend_delay is negative

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The probe() calls pm_runtime_use_autosuspend(), but remove() does not call
pm_runtime_dont_use_autosuspend(). This can lead to a usage_count leak if
autosuspend_delay is set to a negative value.

The pm_runtime_use_autosuspend() also notes that it's important to undo
this with pm_runtime_dont_use_autosuspend() at driver exit time.

Fixes: 1f874edcb7 ("usb: chipidea: add runtime power management support")
Cc: stable <stable@kernel.org>
Assisted-by: Claude:claude-sonnet-4.6
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260716104126.2763454-1-xu.yang_2@oss.nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xu Yang 2026-07-16 18:41:26 +08:00 committed by Greg Kroah-Hartman
parent 4e0197fbb0
commit fc3afb5728
1 changed files with 1 additions and 0 deletions
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1
drivers/usb/chipidea/core.c
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@ -1250,6 +1250,7 @@ static void ci_hdrc_remove(struct platform_device *pdev)
usb_role_switch_unregister(ci->role_switch);
if (ci->supports_runtime_pm) {
pm_runtime_dont_use_autosuspend(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
pm_runtime_disable(&pdev->dev);
pm_runtime_put_noidle(&pdev->dev);