From 770540f029ba65a2658b5204d850565ab7f61f1b Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Sun, 26 Jan 2014 16:05:34 +0000 Subject: [PATCH] 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 Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-rcar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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; -- 2.39.5