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Bluetooth: hci_intel: fix usage_count leak when autosuspend_delay is negative

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intel_set_power() calls pm_runtime_use_autosuspend() when powering on
the device, but the power-off path does not call the matching
pm_runtime_dont_use_autosuspend() before disabling runtime PM.

If the autosuspend delay is set to a negative value while autosuspend
is enabled, the runtime PM core increments usage_count to prevent
runtime suspend. Without calling pm_runtime_dont_use_autosuspend()
during teardown, this reference is not dropped and usage_count remains
unbalanced.

Add the missing pm_runtime_dont_use_autosuspend() call before disabling
runtime PM.

This issue was found by manual code inspection.

Fixes: 74cdad37cd ("Bluetooth: hci_intel: Add runtime PM support")
Cc: stable@vger.kernel.org
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
This commit is contained in:
Guangshuo Li
2026-08-24 13:04:18 -04:00
committed by Luiz Augusto von Dentz
parent 853a92b97c
commit c7e9a8cb69
1 changed files with 1 additions and 0 deletions
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drivers/bluetooth/hci_intel.c
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@@ -345,6 +345,7 @@ static int intel_set_power(struct hci_uart *hu, bool powered)
devm_free_irq(&idev->pdev->dev, idev->irq, idev);
device_wakeup_disable(&idev->pdev->dev);
pm_runtime_dont_use_autosuspend(&idev->pdev->dev);
pm_runtime_disable(&idev->pdev->dev);
}
}