i2c: Prevent log spam on some DVB adapters

Some DVB adapters do not support the special I2C transaction that we
use for probing purposes. There's no point in logging this event, as
there's nothing the user can do and in general there is no actual
problem. So, degrade one of these messages to a debug message, and
move the other one around so that it is only printed on bogus drivers.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Uwe Bugla <uwe.bugla@gmx.de>

diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 4ac33670797ff84857ea8da030b52736ca65a0cc..b346a687ab593a89834270e64b91f2b8b1c4c66f 100644 (file)
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -1190,8 +1190,8 @@ int i2c_probe(struct i2c_adapter *adapter,
                 && address_data->normal_i2c[0] == I2C_CLIENT_END)
                        return 0;
 
-               dev_warn(&adapter->dev, "SMBus Quick command not supported, "
-                        "can't probe for chips\n");
+               dev_dbg(&adapter->dev, "SMBus Quick command not supported, "
+                       "can't probe for chips\n");
                return -EOPNOTSUPP;
        }
 
@@ -1352,6 +1352,10 @@ static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver)
                }
        }
 
+       /* Stop here if the classes do not match */
+       if (!(adapter->class & driver->class))
+               goto exit_free;
+
        /* Stop here if we can't use SMBUS_QUICK */
        if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_QUICK)) {
                if (address_data->probe[0] == I2C_CLIENT_END
@@ -1364,10 +1368,6 @@ static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver)
                goto exit_free;
        }
 
-       /* Stop here if the classes do not match */
-       if (!(adapter->class & driver->class))
-               goto exit_free;
-
        /* Probe entries are done second, and are not affected by ignore
           entries either */
        for (i = 0; address_data->probe[i] != I2C_CLIENT_END; i += 2) {