2009/5/11 Mark Brown <broonie@xxxxxxxxxxxxx>: > On Mon, May 11, 2009 at 11:31:51AM +0100, Michael Abbott wrote: > >> static struct i2c_pxa_platform_data xcep_i2c_platform_data = { >> .class = I2C_CLASS_HWMON >> }; > >> ... >> pxa_set_i2c_info(&xcep_i2c_platform_data); > >> This is called in the .init_machine method, and the target system is a >> PXA255. > >> However, after the error messages on startup, all the sensors seem to be >> detected and seem to be operating normally. > > These errors occur when attempting to talk to non-existant devices which > is almost certainly going to happen with the class based device probing > since the kernel will probe for each device at each possible address on > each I2C bus. > that happen when the device driver registered but the hardware doesnot exist.i once met this when my camera driver could not find the hardware camera. thanks --wxc200 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html