2015-04-24 12:31 GMT+02:00 Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>:
> On Fri, Apr 24, 2015 at 12:28:33PM +0200, Matthias Brugger wrote:
>> 2015-04-23 10:51 GMT+02:00 Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>:
>> > Just because of_clk_get() doesn't mean it should be used. Use devm_clk_get
>> > which is the correct function when a struct device * is available. Also
>> > since it's a devm function we can drop the calls to clk_put(). While at
>> > it also fix a wrong debug message.
>> >
>> > Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
>> > ---
>> > drivers/tty/serial/8250/8250_mtk.c | 7 ++-----
>> > 1 file changed, 2 insertions(+), 5 deletions(-)
>> >
>> > diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
>> > index 7a11fac..c6901dc 100644
>> > --- a/drivers/tty/serial/8250/8250_mtk.c
>> > +++ b/drivers/tty/serial/8250/8250_mtk.c
>> > @@ -131,18 +131,16 @@ static int mtk8250_probe_of(struct platform_device *pdev, struct uart_port *p,
>> > struct mtk8250_data *data)
>> > {
>> > int err;
>> > - struct device_node *np = pdev->dev.of_node;
>> >
>> > - data->uart_clk = of_clk_get(np, 0);
>> > + data->uart_clk = devm_clk_get(&pdev->dev, NULL);
>> > if (IS_ERR(data->uart_clk)) {
>> > - dev_warn(&pdev->dev, "Can't get timer clock\n");
>> > + dev_warn(&pdev->dev, "Can't get uart clock\n");
>> > return PTR_ERR(data->uart_clk);
>> > }
>> >
>> > err = clk_prepare_enable(data->uart_clk);
>> > if (err) {
>> > dev_warn(&pdev->dev, "Can't prepare clock\n");
>> > - clk_put(data->uart_clk);
>> > return err;
>> > }
>> > p->uartclk = clk_get_rate(data->uart_clk);
>> > @@ -216,7 +214,6 @@ static int mtk8250_remove(struct platform_device *pdev)
>> > serial8250_unregister_port(data->line);
>> > if (!IS_ERR(data->uart_clk)) {
>> > clk_disable_unprepare(data->uart_clk);
>> > - clk_put(data->uart_clk);
>> > }
>>
>> Please delete the braces.
>
> The if() is removed completly in the next patch anyway.
You are right. I propose to merge patch 2 and 3, so you get a clean code.
On the way, can you have a look on the commit message? For me it is
not clear what you want to say.
Cheers,
Matthias
--
motzblog.wordpress.com
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