On 09. 07. 20, 15:56, Chuhong Yuan wrote:
> This driver calls ioremap() in probe, but it misses calling iounmap() in
> probe's error handler and remove.
> Add the missed calls to fix it.
>
> Fixes: 47d37d6f94cc ("serial: Add auart driver for i.MX23/28")
> Signed-off-by: Chuhong Yuan <hslester96@xxxxxxxxx>
> ---
> Changes in v2:
> - Use iounmap() instead of devm_ioremap() to fix the bugs.
Out of curiosity, what was wrong with devm_ioremap? I seem I cannot find
the reason...
> - Modify the subject and the description.
>
> drivers/tty/serial/mxs-auart.c | 12 ++++++++----
> 1 file changed, 8 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
> index b4f835e7de23..b784323a6a7b 100644
> --- a/drivers/tty/serial/mxs-auart.c
> +++ b/drivers/tty/serial/mxs-auart.c
> @@ -1698,21 +1698,21 @@ static int mxs_auart_probe(struct platform_device *pdev)
> irq = platform_get_irq(pdev, 0);
> if (irq < 0) {
> ret = irq;
> - goto out_disable_clks;
> + goto out_iounmap;
> }
>
> s->port.irq = irq;
> ret = devm_request_irq(&pdev->dev, irq, mxs_auart_irq_handle, 0,
> dev_name(&pdev->dev), s);
> if (ret)
> - goto out_disable_clks;
> + goto out_iounmap;
>
> platform_set_drvdata(pdev, s);
>
> ret = mxs_auart_init_gpios(s, &pdev->dev);
> if (ret) {
> dev_err(&pdev->dev, "Failed to initialize GPIOs.\n");
> - goto out_disable_clks;
> + goto out_iounmap;
> }
>
> /*
> @@ -1720,7 +1720,7 @@ static int mxs_auart_probe(struct platform_device *pdev)
> */
> ret = mxs_auart_request_gpio_irq(s);
> if (ret)
> - goto out_disable_clks;
> + goto out_iounmap;
>
> auart_port[s->port.line] = s;
>
> @@ -1746,6 +1746,9 @@ static int mxs_auart_probe(struct platform_device *pdev)
> mxs_auart_free_gpio_irq(s);
> auart_port[pdev->id] = NULL;
>
> +out_iounmap:
> + iounmap(s->port.membase);
> +
> out_disable_clks:
> if (is_asm9260_auart(s)) {
> clk_disable_unprepare(s->clk);
> @@ -1761,6 +1764,7 @@ static int mxs_auart_remove(struct platform_device *pdev)
> uart_remove_one_port(&auart_driver, &s->port);
> auart_port[pdev->id] = NULL;
> mxs_auart_free_gpio_irq(s);
> + iounmap(s->port.membase);
> if (is_asm9260_auart(s)) {
> clk_disable_unprepare(s->clk);
> clk_disable_unprepare(s->clk_ahb);
>
--
js
suse labs
