linux-kernel - [PATCH] pwm: vt8500: Rename variable pointing to driver private data

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Date:   Wed,  9 Feb 2022 14:47:55 +0800
From:   zhaoxiao <zhaoxiao@...ontech.com>
To:     thierry.reding@...il.com, lee.jones@...aro.org
Cc:     u.kleine-koenig@...gutronix.de,
        linux-arm-kernel@...ts.infradead.org, linux-pwm@...r.kernel.org,
        linux-kernel@...r.kernel.org, zhaoxiao <zhaoxiao@...ontech.com>
Subject: [PATCH] pwm: vt8500: Rename variable pointing to driver private data

Status quo is that variables of type struct vt8500_chip * are named
"pwm", "chip" or "pc". The two formers are all not optimal because
usually only struct pwm_device * variables are named "pwm" and "chip" is
usually used for variabled of type struct pwm_chip *.

So consistently use the same and non-conflicting name "pc".

Signed-off-by: zhaoxiao <zhaoxiao@...ontech.com>
---
 drivers/pwm/pwm-vt8500.c | 38 +++++++++++++++++++-------------------
 1 file changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/pwm/pwm-vt8500.c b/drivers/pwm/pwm-vt8500.c
index 7170a315535b..fc0a572f7d06 100644
--- a/drivers/pwm/pwm-vt8500.c
+++ b/drivers/pwm/pwm-vt8500.c
@@ -235,7 +235,7 @@ MODULE_DEVICE_TABLE(of, vt8500_pwm_dt_ids);
 
 static int vt8500_pwm_probe(struct platform_device *pdev)
 {
-	struct vt8500_chip *chip;
+	struct vt8500_chip *pc;
 	struct device_node *np = pdev->dev.of_node;
 	int ret;
 
@@ -244,48 +244,48 @@ static int vt8500_pwm_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
-	if (chip == NULL)
+	pc = devm_kzalloc(&pdev->dev, sizeof(*pc), GFP_KERNEL);
+	if (pc == NULL)
 		return -ENOMEM;
 
-	chip->chip.dev = &pdev->dev;
-	chip->chip.ops = &vt8500_pwm_ops;
-	chip->chip.npwm = VT8500_NR_PWMS;
+	pc->chip.dev = &pdev->dev;
+	pc->chip.ops = &vt8500_pwm_ops;
+	pc->chip.npwm = VT8500_NR_PWMS;
 
-	chip->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(chip->clk)) {
+	pc->clk = devm_clk_get(&pdev->dev, NULL);
+	if (IS_ERR(pc->clk)) {
 		dev_err(&pdev->dev, "clock source not specified\n");
-		return PTR_ERR(chip->clk);
+		return PTR_ERR(pc->clk);
 	}
 
-	chip->base = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(chip->base))
-		return PTR_ERR(chip->base);
+	pc->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(pc->base))
+		return PTR_ERR(pc->base);
 
-	ret = clk_prepare(chip->clk);
+	ret = clk_prepare(pc->clk);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to prepare clock\n");
 		return ret;
 	}
 
-	ret = pwmchip_add(&chip->chip);
+	ret = pwmchip_add(&pc->chip);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to add PWM chip\n");
-		clk_unprepare(chip->clk);
+		clk_unprepare(pc->clk);
 		return ret;
 	}
 
-	platform_set_drvdata(pdev, chip);
+	platform_set_drvdata(pdev, pc);
 	return ret;
 }
 
 static int vt8500_pwm_remove(struct platform_device *pdev)
 {
-	struct vt8500_chip *chip = platform_get_drvdata(pdev);
+	struct vt8500_chip *pc = platform_get_drvdata(pdev);
 
-	pwmchip_remove(&chip->chip);
+	pwmchip_remove(&pc->chip);
 
-	clk_unprepare(chip->clk);
+	clk_unprepare(pc->clk);
 
 	return 0;
 }
-- 
2.20.1