Commit 6dae1421 authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Paul Mundt
Browse files

serial: sh-sci: Fix probe error paths 



When probing fails, the driver must not try to cleanup resources that
have not been initialized. Fix this.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 37778088

drivers/tty/serial/sh-sci.c

+23 −13
Original line number Diff line number Diff line
@@ -2179,6 +2179,16 @@ static int __devinit sci_init_single(struct platform_device *dev, 
	return 0;

}



static void sci_cleanup_single(struct sci_port *port)

{

	sci_free_gpios(port);



	clk_put(port->iclk);

	clk_put(port->fclk);



	pm_runtime_disable(port->port.dev);

}



#ifdef CONFIG_SERIAL_SH_SCI_CONSOLE

static void serial_console_putchar(struct uart_port *port, int ch)

{
@@ -2360,14 +2370,10 @@ static int sci_remove(struct platform_device *dev) 
	cpufreq_unregister_notifier(&port->freq_transition,

				    CPUFREQ_TRANSITION_NOTIFIER);



	sci_free_gpios(port);



	uart_remove_one_port(&sci_uart_driver, &port->port);



	clk_put(port->iclk);

	clk_put(port->fclk);

	sci_cleanup_single(port);



	pm_runtime_disable(&dev->dev);

	return 0;

}
@@ -2392,7 +2398,13 @@ static int __devinit sci_probe_single(struct platform_device *dev, 
	if (ret)

		return ret;



	return uart_add_one_port(&sci_uart_driver, &sciport->port);

	ret = uart_add_one_port(&sci_uart_driver, &sciport->port);

	if (ret) {

		sci_cleanup_single(sciport);

		return ret;

	}



	return 0;

}



static int __devinit sci_probe(struct platform_device *dev)
@@ -2413,24 +2425,22 @@ static int __devinit sci_probe(struct platform_device *dev) 


	ret = sci_probe_single(dev, dev->id, p, sp);

	if (ret)

		goto err_unreg;

		return ret;



	sp->freq_transition.notifier_call = sci_notifier;



	ret = cpufreq_register_notifier(&sp->freq_transition,

					CPUFREQ_TRANSITION_NOTIFIER);

	if (unlikely(ret < 0))

		goto err_unreg;

	if (unlikely(ret < 0)) {

		sci_cleanup_single(sp);

		return ret;

	}



#ifdef CONFIG_SH_STANDARD_BIOS

	sh_bios_gdb_detach();

#endif



	return 0;



err_unreg:

	sci_remove(dev);

	return ret;

}



static int sci_suspend(struct device *dev)