iio: mxs-lradc: simplify TS registration

This patch simplifies the TS registration of mxs-lradc by
using devm_input_allocate_device.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 2 insertions, 8 deletions

diff --git a/drivers/iio/adc/mxs-lradc.c b/drivers/iio/adc/mxs-lradc.c
index ad26da1edbee..3d1d3706bf9b 100644
--- a/drivers/iio/adc/mxs-lradc.c
+++ b/drivers/iio/adc/mxs-lradc.c
@@ -1120,18 +1120,16 @@ 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);
         if (!input)
                 return -ENOMEM;
 
         input->name = DRIVER_NAME;
         input->id.bustype = BUS_HOST;
-        input->dev.parent = dev;
         input->open = mxs_lradc_ts_open;
         input->close = mxs_lradc_ts_close;
 
@@ -1146,11 +1144,8 @@ 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 +1154,6 @@ static void mxs_lradc_ts_unregister(struct mxs_lradc *lradc)
                 return;
 
         mxs_lradc_disable_ts(lradc);
-        input_unregister_device(lradc->ts_input);
 }
 
 /*