linux-kernel - [PATCH v2 2/4] iio: adc: xilinx: use helper variable for &pdev->dev

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Date:   Mon,  2 Nov 2020 15:22:26 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Michal Simek <michal.simek@...inx.com>
Cc:     linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH v2 2/4] iio: adc: xilinx: use helper variable for &pdev->dev

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

It's more elegant to use a helper local variable to store the address
of the underlying struct device than to dereference pdev everywhere.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
---
 drivers/iio/adc/xilinx-xadc-core.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index f93c34fe5873..8494eb424b33 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -1186,6 +1186,7 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 
 static int xadc_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	const struct of_device_id *id;
 	struct iio_dev *indio_dev;
 	unsigned int bipolar_mask;
@@ -1195,10 +1196,10 @@ static int xadc_probe(struct platform_device *pdev)
 	int irq;
 	int i;
 
-	if (!pdev->dev.of_node)
+	if (!dev->of_node)
 		return -ENODEV;
 
-	id = of_match_node(xadc_of_match_table, pdev->dev.of_node);
+	id = of_match_node(xadc_of_match_table, dev->of_node);
 	if (!id)
 		return -EINVAL;
 
@@ -1206,7 +1207,7 @@ static int xadc_probe(struct platform_device *pdev)
 	if (irq <= 0)
 		return -ENXIO;
 
-	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*xadc));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*xadc));
 	if (!indio_dev)
 		return -ENOMEM;
 
@@ -1226,7 +1227,7 @@ static int xadc_probe(struct platform_device *pdev)
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &xadc_info;
 
-	ret = xadc_parse_dt(indio_dev, pdev->dev.of_node, &conf0);
+	ret = xadc_parse_dt(indio_dev, dev->of_node, &conf0);
 	if (ret)
 		return ret;
 
@@ -1250,7 +1251,7 @@ static int xadc_probe(struct platform_device *pdev)
 		}
 	}
 
-	xadc->clk = devm_clk_get(&pdev->dev, NULL);
+	xadc->clk = devm_clk_get(dev, NULL);
 	if (IS_ERR(xadc->clk)) {
 		ret = PTR_ERR(xadc->clk);
 		goto err_free_samplerate_trigger;
@@ -1276,7 +1277,7 @@ static int xadc_probe(struct platform_device *pdev)
 	}
 
 	ret = request_irq(xadc->irq, xadc->ops->interrupt_handler, 0,
-			dev_name(&pdev->dev), indio_dev);
+			  dev_name(dev), indio_dev);
 	if (ret)
 		goto err_clk_disable_unprepare;
 
-- 
2.29.1