From 617da00cb11b75a17a271147e616296f754f591b Mon Sep 17 00:00:00 2001 From: Zhiwu Song Date: Tue, 13 Aug 2013 17:11:31 +0800 Subject: [PATCH] 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: Zhiwu Song Signed-off-by: Barry Song Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-sirf.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-sirf.c b/drivers/i2c/busses/i2c-sirf.c index 30ae3780b7bf..6784f7f527a4 100644 --- a/drivers/i2c/busses/i2c-sirf.c +++ b/drivers/i2c/busses/i2c-sirf.c @@ -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; -- 2.39.5