Commit dc0e5734 authored by Committed by Greg Kroah-Hartman
tty: serial: 8250_mtk: always resume the device in probe.
commit 100bc3e2bebf95506da57cbdf5f26b25f6da4c81 upstream. serial8250_register_8250_port calls uart_config_port, which calls config_port on the port before it tries to power on the port. So we need the port to be on before calling serial8250_register_8250_port. Change the code to always do a runtime resume in probe before registering port, and always do a runtime suspend in remove. This basically reverts the change in commit 68e5fc4a ("tty: serial: 8250_mtk: use pm_runtime callbacks for enabling"), but still use pm_runtime callbacks. Fixes: 68e5fc4a ("tty: serial: 8250_mtk: use pm_runtime callbacks for enabling") Signed-off-by: Peter Shih <firstname.lastname@example.org> Cc: stable <email@example.com> Signed-off-by: Greg Kroah-Hartman <firstname.lastname@example.org>
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