iio: adc: sc27xx: Introduce local variable 'struct device *dev'

Introduce local variable 'struct device *dev' and use it instead of
dereferencing it repeatly.

Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/sc27xx_adc.c b/drivers/iio/adc/sc27xx_adc.c
index f7f7a18..ec86f64 100644 (file)
--- a/drivers/iio/adc/sc27xx_adc.c
+++ b/drivers/iio/adc/sc27xx_adc.c
@@ -504,88 +504,89 @@ static void sc27xx_adc_free_hwlock(void *_data)
 
 static int sc27xx_adc_probe(struct platform_device *pdev)
 {
-       struct device_node *np = pdev->dev.of_node;
+       struct device *dev = &pdev->dev;
+       struct device_node *np = dev->of_node;
        struct sc27xx_adc_data *sc27xx_data;
        struct iio_dev *indio_dev;
        int ret;
 
-       indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*sc27xx_data));
+       indio_dev = devm_iio_device_alloc(dev, sizeof(*sc27xx_data));
        if (!indio_dev)
                return -ENOMEM;
 
        sc27xx_data = iio_priv(indio_dev);
 
-       sc27xx_data->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+       sc27xx_data->regmap = dev_get_regmap(dev->parent, NULL);
        if (!sc27xx_data->regmap) {
-               dev_err(&pdev->dev, "failed to get ADC regmap\n");
+               dev_err(dev, "failed to get ADC regmap\n");
                return -ENODEV;
        }
 
        ret = of_property_read_u32(np, "reg", &sc27xx_data->base);
        if (ret) {
-               dev_err(&pdev->dev, "failed to get ADC base address\n");
+               dev_err(dev, "failed to get ADC base address\n");
                return ret;
        }
 
        sc27xx_data->irq = platform_get_irq(pdev, 0);
        if (sc27xx_data->irq < 0) {
-               dev_err(&pdev->dev, "failed to get ADC irq number\n");
+               dev_err(dev, "failed to get ADC irq number\n");
                return sc27xx_data->irq;
        }
 
        ret = of_hwspin_lock_get_id(np, 0);
        if (ret < 0) {
-               dev_err(&pdev->dev, "failed to get hwspinlock id\n");
+               dev_err(dev, "failed to get hwspinlock id\n");
                return ret;
        }
 
        sc27xx_data->hwlock = hwspin_lock_request_specific(ret);
        if (!sc27xx_data->hwlock) {
-               dev_err(&pdev->dev, "failed to request hwspinlock\n");
+               dev_err(dev, "failed to request hwspinlock\n");
                return -ENXIO;
        }
 
-       ret = devm_add_action(&pdev->dev, sc27xx_adc_free_hwlock,
+       ret = devm_add_action(dev, sc27xx_adc_free_hwlock,
                              sc27xx_data->hwlock);
        if (ret) {
                sc27xx_adc_free_hwlock(sc27xx_data->hwlock);
-               dev_err(&pdev->dev, "failed to add hwspinlock action\n");
+               dev_err(dev, "failed to add hwspinlock action\n");
                return ret;
        }
 
        init_completion(&sc27xx_data->completion);
-       sc27xx_data->dev = &pdev->dev;
+       sc27xx_data->dev = dev;
 
        ret = sc27xx_adc_enable(sc27xx_data);
        if (ret) {
-               dev_err(&pdev->dev, "failed to enable ADC module\n");
+               dev_err(dev, "failed to enable ADC module\n");
                return ret;
        }
 
-       ret = devm_add_action(&pdev->dev, sc27xx_adc_disable, sc27xx_data);
+       ret = devm_add_action(dev, sc27xx_adc_disable, sc27xx_data);
        if (ret) {
                sc27xx_adc_disable(sc27xx_data);
-               dev_err(&pdev->dev, "failed to add ADC disable action\n");
+               dev_err(dev, "failed to add ADC disable action\n");
                return ret;
        }
 
-       ret = devm_request_threaded_irq(&pdev->dev, sc27xx_data->irq, NULL,
+       ret = devm_request_threaded_irq(dev, sc27xx_data->irq, NULL,
                                        sc27xx_adc_isr, IRQF_ONESHOT,
                                        pdev->name, sc27xx_data);
        if (ret) {
-               dev_err(&pdev->dev, "failed to request ADC irq\n");
+               dev_err(dev, "failed to request ADC irq\n");
                return ret;
        }
 
-       indio_dev->dev.parent = &pdev->dev;
-       indio_dev->name = dev_name(&pdev->dev);
+       indio_dev->dev.parent = dev;
+       indio_dev->name = dev_name(dev);
        indio_dev->modes = INDIO_DIRECT_MODE;
        indio_dev->info = &sc27xx_info;
        indio_dev->channels = sc27xx_channels;
        indio_dev->num_channels = ARRAY_SIZE(sc27xx_channels);
-       ret = devm_iio_device_register(&pdev->dev, indio_dev);
+       ret = devm_iio_device_register(dev, indio_dev);
        if (ret)
-               dev_err(&pdev->dev, "could not register iio (ADC)");
+               dev_err(dev, "could not register iio (ADC)");
 
        return ret;
 }