On Mon, Jan 30, 2017 at 1:41 PM, Philipp Zabel <p.za...@pengutronix.de> wrote:
> As of commit bb475230b8e5 ("reset: make optional functions really
> optional"), the reset framework API calls use NULL pointers to describe
> optional, non-present reset controls.
Eventually!
FWIW:
Reviewed-by: Andy Shevchenko <andy.shevche...@gmail.com>
>
> This allows to return errors from devm_reset_control_get_optional and to
> call reset_control_(de)assert unconditionally.
>
> Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
> Cc: Chen-Yu Tsai <w...@csie.org>
> Cc: Maxime Ripard <maxime.rip...@free-electrons.com>
> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
> ---
> drivers/tty/serial/8250/8250_dw.c | 13 +++++--------
> 1 file changed, 5 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/tty/serial/8250/8250_dw.c
> b/drivers/tty/serial/8250/8250_dw.c
> index c89fafc972b69..b8b911adff471 100644
> --- a/drivers/tty/serial/8250/8250_dw.c
> +++ b/drivers/tty/serial/8250/8250_dw.c
> @@ -503,12 +503,11 @@ static int dw8250_probe(struct platform_device *pdev)
> }
>
> data->rst = devm_reset_control_get_optional(dev, NULL);
> - if (IS_ERR(data->rst) && PTR_ERR(data->rst) == -EPROBE_DEFER) {
> - err = -EPROBE_DEFER;
> + if (IS_ERR(data->rst)) {
> + err = PTR_ERR(data->rst);
> goto err_pclk;
> }
> - if (!IS_ERR(data->rst))
> - reset_control_deassert(data->rst);
> + reset_control_deassert(data->rst);
>
> dw8250_quirks(p, data);
>
> @@ -540,8 +539,7 @@ static int dw8250_probe(struct platform_device *pdev)
> return 0;
>
> err_reset:
> - if (!IS_ERR(data->rst))
> - reset_control_assert(data->rst);
> + reset_control_assert(data->rst);
>
> err_pclk:
> if (!IS_ERR(data->pclk))
> @@ -562,8 +560,7 @@ static int dw8250_remove(struct platform_device *pdev)
>
> serial8250_unregister_port(data->line);
>
> - if (!IS_ERR(data->rst))
> - reset_control_assert(data->rst);
> + reset_control_assert(data->rst);
>
> if (!IS_ERR(data->pclk))
> clk_disable_unprepare(data->pclk);
> --
> 2.11.0
>
--
With Best Regards,
Andy Shevchenko
