• Peter Shih's avatar
    tty: serial: 8250_mtk: always resume the device in probe. · 100bc3e2
    Peter Shih authored
    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: default avatarPeter Shih <pihsun@chromium.org>
    Cc: stable <stable@vger.kernel.org>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    100bc3e2
8250_mtk.c 7.47 KB