USB: serial: cp210x: disable interface on errors in open (bcbb9d81) · Commits · 戴 / test

Try to disable the serial interface in the unlikely event that generic open() fails. Link: https://lore.kernel.org/r/20200713105517.27796-2-johan@kernel.org Reviewed-by:

drivers/usb/serial/cp210x.c

+10 −1

Original line number	Diff line number	Diff line
		@@ -824,7 +824,16 @@ static int cp210x_open(struct tty_struct tty, struct usb_serial_port port)
		if (tty)
		cp210x_change_speed(tty, port, NULL);

		return usb_serial_generic_open(tty, port);
		result = usb_serial_generic_open(tty, port);
		if (result)
		goto err_disable;

		return 0;

		err_disable:
		cp210x_write_u16_reg(port, CP210X_IFC_ENABLE, UART_DISABLE);

		return result;
		}

		static void cp210x_close(struct usb_serial_port *port)