IIO: ADC: stm32-dfsdm: code optimization

Use of_device_get_match_data to optimize the source code.
No check is needed on dev_data as match table is defined in driver.

Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 2 insertions, 15 deletions

diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
index 5e871404f565..3fe9b34ac6af 100644
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -1087,18 +1087,11 @@ static int stm32_dfsdm_adc_probe(struct platform_device *pdev)
         struct device_node *np = dev->of_node;
         const struct stm32_dfsdm_dev_data *dev_data;
         struct iio_dev *iio;
-        const struct of_device_id *of_id;
         char *name;
         int ret, irq, val;
 
-        of_id = of_match_node(stm32_dfsdm_adc_match, np);
-        if (!of_id->data) {
-                dev_err(&pdev->dev, "Data associated to device is missing\n");
-                return -EINVAL;
-        }
-
-        dev_data = (const struct stm32_dfsdm_dev_data *)of_id->data;
 
+        dev_data = of_device_get_match_data(dev);
         iio = devm_iio_device_alloc(dev, sizeof(*adc));
         if (!iio) {
                 dev_err(dev, "%s: Failed to allocate IIO\n", __func__);
diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c
index 6cd655f8239b..6290332cfd3f 100644
--- a/drivers/iio/adc/stm32-dfsdm-core.c
+++ b/drivers/iio/adc/stm32-dfsdm-core.c
@@ -242,7 +242,6 @@ MODULE_DEVICE_TABLE(of, stm32_dfsdm_of_match);
 static int stm32_dfsdm_probe(struct platform_device *pdev)
 {
         struct dfsdm_priv *priv;
-        const struct of_device_id *of_id;
         const struct stm32_dfsdm_dev_data *dev_data;
         struct stm32_dfsdm *dfsdm;
         int ret;
@@ -253,13 +252,8 @@ static int stm32_dfsdm_probe(struct platform_device *pdev)
 
         priv->pdev = pdev;
 
-        of_id = of_match_node(stm32_dfsdm_of_match, pdev->dev.of_node);
-        if (!of_id->data) {
-                dev_err(&pdev->dev, "Data associated to device is missing\n");
-                return -EINVAL;
-        }
+        dev_data = of_device_get_match_data(&pdev->dev);
 
-        dev_data = (const struct stm32_dfsdm_dev_data *)of_id->data;
         dfsdm = &priv->dfsdm;
         dfsdm->fl_list = devm_kcalloc(&pdev->dev, dev_data->num_filters,
                                       sizeof(*dfsdm->fl_list), GFP_KERNEL);