linux-kernel - [PATCH 1/2] i2c: imx: use devm_request_threaded

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Message-Id: <1603441103-17735-1-git-send-email-peng.fan@nxp.com>
Date:   Fri, 23 Oct 2020 16:18:22 +0800
From:   peng.fan@....com
To:     shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com
Cc:     kernel@...gutronix.de, linux-imx@....com,
        linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH 1/2] i2c: imx: use devm_request_threaded_irq to simplify code

From: Peng Fan <peng.fan@....com>

Use devm_request_threaded_irq to simplify code

Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/i2c/busses/i2c-imx.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index e6f8d6e45a15..ba9d639223ec 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -1216,8 +1216,8 @@ static int i2c_imx_probe(struct platform_device *pdev)
 		goto rpm_disable;
 
 	/* Request IRQ */
-	ret = request_threaded_irq(irq, i2c_imx_isr, NULL, IRQF_SHARED,
-				   pdev->name, i2c_imx);
+	ret = devm_request_threaded_irq(&pdev->dev, irq, i2c_imx_isr, NULL, IRQF_SHARED,
+					pdev->name, i2c_imx);
 	if (ret) {
 		dev_err(&pdev->dev, "can't claim irq %d\n", irq);
 		goto rpm_disable;
@@ -1265,7 +1265,6 @@ static int i2c_imx_probe(struct platform_device *pdev)
 
 clk_notifier_unregister:
 	clk_notifier_unregister(i2c_imx->clk, &i2c_imx->clk_change_nb);
-	free_irq(irq, i2c_imx);
 rpm_disable:
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
@@ -1278,7 +1277,7 @@ static int i2c_imx_probe(struct platform_device *pdev)
 static int i2c_imx_remove(struct platform_device *pdev)
 {
 	struct imx_i2c_struct *i2c_imx = platform_get_drvdata(pdev);
-	int irq, ret;
+	int ret;
 
 	ret = pm_runtime_get_sync(&pdev->dev);
 	if (ret < 0)
@@ -1298,9 +1297,6 @@ static int i2c_imx_remove(struct platform_device *pdev)
 	imx_i2c_write_reg(0, i2c_imx, IMX_I2C_I2SR);
 
 	clk_notifier_unregister(i2c_imx->clk, &i2c_imx->clk_change_nb);
-	irq = platform_get_irq(pdev, 0);
-	if (irq >= 0)
-		free_irq(irq, i2c_imx);
 	clk_disable_unprepare(i2c_imx->clk);
 
 	pm_runtime_put_noidle(&pdev->dev);
-- 
2.28.0