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Commit 46f2832b authored by Jingchang Lu's avatar Jingchang Lu Committed by Wolfram Sang
Browse files

i2c: imx: enable clk before write to registers 



The module clk should be enabled before write to
its register in probe(), and the clk can be disabled
after.

Signed-off-by: default avatarJingchang Lu <b35083@freescale.com>
Reviewed-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent d533f049

drivers/i2c/busses/i2c-imx.c

+6 −0
Original line number Diff line number Diff line
@@ -543,6 +543,11 @@ static int __init i2c_imx_probe(struct platform_device *pdev) 
		return PTR_ERR(i2c_imx->clk);

	}



	ret = clk_prepare_enable(i2c_imx->clk);

	if (ret) {

		dev_err(&pdev->dev, "can't enable I2C clock\n");

		return ret;

	}

	/* Request IRQ */

	ret = devm_request_irq(&pdev->dev, irq, i2c_imx_isr, 0,

				pdev->name, i2c_imx);
@@ -580,6 +585,7 @@ static int __init i2c_imx_probe(struct platform_device *pdev) 


	/* Set up platform driver data */

	platform_set_drvdata(pdev, i2c_imx);

	clk_disable_unprepare(i2c_imx->clk);



	dev_dbg(&i2c_imx->adapter.dev, "claimed irq %d\n", irq);

	dev_dbg(&i2c_imx->adapter.dev, "device resources from 0x%x to 0x%x\n",