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Commit 617da00c authored by Zhiwu Song's avatar Zhiwu Song Committed by Wolfram Sang
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i2c: sirf: retry 3 times as sometimes we get random noack and timeout 



let i2c core retry 3 times as sometimes we get random noack and timeout
even when we access an existing i2c client.

Signed-off-by: default avatarZhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: default avatarBarry Song <Baohua.Song@csr.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 5ebffa6b

drivers/i2c/busses/i2c-sirf.c

+2 −1
Original line number Diff line number Diff line
@@ -229,7 +229,7 @@ static int i2c_sirfsoc_xfer_msg(struct sirfsoc_i2c *siic, struct i2c_msg *msg) 
		while (readl(siic->base + SIRFSOC_I2C_CTRL) & SIRFSOC_I2C_RESET)

			cpu_relax();

	}

	return siic->err_status ? -EIO : 0;

	return siic->err_status ? -EAGAIN : 0;

}



static u32 i2c_sirfsoc_func(struct i2c_adapter *adap)
@@ -333,6 +333,7 @@ static int i2c_sirfsoc_probe(struct platform_device *pdev) 


	adap->algo = &i2c_sirfsoc_algo;

	adap->algo_data = siic;

	adap->retries = 3;



	adap->dev.of_node = pdev->dev.of_node;

	adap->dev.parent = &pdev->dev;