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| author | Zhiwu Song <Zhiwu.Song@csr.com> | 2013-08-13 17:11:31 +0800 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2013-08-28 11:46:03 +0200 |
| commit | 617da00cb11b75a17a271147e616296f754f591b (patch) | |
| tree | 51c4be3af32c849491b5c8dce881f3d4a988d2c0 /drivers/i2c | |
| parent | 5ebffa6b5e0c43edbdd41e5bc53137547a1378cb (diff) | |
| download | blackbird-op-linux-617da00cb11b75a17a271147e616296f754f591b.tar.gz blackbird-op-linux-617da00cb11b75a17a271147e616296f754f591b.zip | |
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 <Zhiwu.Song@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-sirf.c | 3 |
1 files changed, 2 insertions, 1 deletions
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; |
