Bluetooth: btusb: Fix leaked runtime PM reference in btusb_reset

btusb_reset calls usb_autopm_get_interface to resume the device
before queuing a reset of it, but never calls the matching
usb_autopm_put_interface.

usb_queue_reset_device ends up in usb_reset_device(), and since
btusb provides no pre_reset/post_reset callbacks the interface is
merely unbound and rebound: the interface device object survives
this cycle, and so does its PM usage count, which is not cleared
when the driver is unbound.

As a result every reset permanently leaks a PM usage reference,
preventing the interface from being runtime suspended again until
it is unbound.

Set BTUSB_RESET flag before usb_queue_reset_device so that
btusb_disconnect drops the reference. If the flag is already set,
drop one reference.

Fixes: c9209b269afd ("Bluetooth: btusb: Introduce generic USB reset")
Assisted-by: Claude:qwen3.8-max
Signed-off-by: Jiajia Liu <liujiajia@kylinos.cn>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

0 files changed, 0 insertions, 0 deletions