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authorBen Dooks <ben.dooks@codethink.co.uk>2014-01-26 16:05:34 +0000
committerWolfram Sang <wsa@the-dreams.de>2014-01-26 22:48:29 +0100
commit770540f029ba65a2658b5204d850565ab7f61f1b (patch)
treea9417aed98bb54fb0e85fce137dc84ed7d4b8ce0 /drivers/i2c
parent72fa818e8a3145ab3e345acbd3eccfa71a120702 (diff)
downloadlinux-770540f029ba65a2658b5204d850565ab7f61f1b.tar.bz2
i2c: rcar: do not print error if device nacks transfer
The i2c-rcar driver currently prints an error message if the master_xfer callback fails. However if the bus is being probed then lots of NAKs will be generated, causing the output of a number of errors printed. To solve this, disable the print if the error is not -EREMOTEIO. An example of running i2cdetect: 10: i2c-rcar e6530000.i2c: error -121 : 15 -- i2c-rcar e6530000.i2c: error -121 : 15 -- 12 i2c-rcar e6530000.i2c: error -121 : 15 -- i2c-rcar e6530000.i2c: error -121 : 15 -- i2c-rcar e6530000.i2c: error -121 : 15 -- i2c-rcar e6530000.i2c: error -121 : 15 -- i2c-rcar e6530000.i2c: error -121 : 15 -- i2c-rcar e6530000.i2c: error -121 : 15 Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/busses/i2c-rcar.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index 4f5be21d5740..fd4cd7f6b3ef 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -622,7 +622,7 @@ static int rcar_i2c_master_xfer(struct i2c_adapter *adap,
pm_runtime_put(dev);
- if (ret < 0)
+ if (ret < 0 && ret != -EREMOTEIO)
dev_err(dev, "error %d : %x\n", ret, priv->flags);
return ret;