On Thu, Apr 21, 2016 at 08:11:16PM +0000, Stefan Wahren wrote:
> This patch simplifies the TS registration of mxs-lradc by
> using devm_input_allocate_device.
>
> Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
> ---
> drivers/iio/adc/mxs-lradc.c | 9 ++-------
> 1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/iio/adc/mxs-lradc.c b/drivers/iio/adc/mxs-lradc.c
> index ad26da1..223650b 100644
> --- a/drivers/iio/adc/mxs-lradc.c
> +++ b/drivers/iio/adc/mxs-lradc.c
> @@ -1120,12 +1120,11 @@ static int mxs_lradc_ts_register(struct mxs_lradc *lradc)
> {
> struct input_dev *input;
> struct device *dev = lradc->dev;
> - int ret;
>
> if (!lradc->use_touchscreen)
> return 0;
>
> - input = input_allocate_device();
> + input = devm_input_allocate_device(dev);
Also please drop "input->dev.parent = dev;" below.
> if (!input)
> return -ENOMEM;
>
> @@ -1146,11 +1145,8 @@ static int mxs_lradc_ts_register(struct mxs_lradc *lradc)
>
> lradc->ts_input = input;
> input_set_drvdata(input, lradc);
> - ret = input_register_device(input);
> - if (ret)
> - input_free_device(lradc->ts_input);
>
> - return ret;
> + return input_register_device(input);
> }
>
> static void mxs_lradc_ts_unregister(struct mxs_lradc *lradc)
> @@ -1159,7 +1155,6 @@ static void mxs_lradc_ts_unregister(struct mxs_lradc *lradc)
> return;
>
> mxs_lradc_disable_ts(lradc);
I do not think this is needed, since mxs_lradc_ts_close() does this for
us (and it will be called automatically if input device is open at
unregistration time), and if you remove this you can remove
mxs_lradc_ts_unregister() altogether.
> - input_unregister_device(lradc->ts_input);
> }
>
> /*
> --
> 1.7.9.5
>
Thanks.
--
Dmitry
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