i2c: Improve logging on failure to probe for ->class devices

While writing the i2c-imc driver, I noticed that the warning message
when the i2c core can't figure out how to probe is mostly useless.
This trivial patch improves it.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index d075df6..3d9ca2d 100644 (file)
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1665,7 +1665,8 @@ static int i2c_default_probe(struct i2c_adapter *adap, unsigned short addr)
                err = i2c_smbus_xfer(adap, addr, 0, I2C_SMBUS_READ, 0,
                                     I2C_SMBUS_BYTE, &dummy);
        else {
-               dev_warn(&adap->dev, "No suitable probing method supported\n");
+               dev_warn(&adap->dev, "No suitable probing method supported for address 0x%02X\n",
+                        addr);
                err = -EOPNOTSUPP;
        }