Re: [PATCH 1/5] hwmon: ina2xx: bail-out from ina2xx_probe() in case of configuration errors

From: Guenter Roeck
Date: Tue Nov 25 2014 - 13:31:14 EST


On 11/25/2014 10:22 AM, Bartosz Golaszewski wrote:
2014-11-25 18:59 GMT+01:00 Guenter Roeck <linux@xxxxxxxxxxxx>:
It seems to me this is a problem of your architecture. That doesn't
make it a generic problem. Your architecture should detect that a
probe was disconnected and de-instantiate the device automatically
if so, and re-instantiate it if it is re-inserted. Ultimately this
should be done with, for example, devicetree overlays.

You're right and it's planned to be done this way in the future, when
this project exits its prototype phase (around Q2 2015). Nevertheless
I still think that if we're adding a set function, it should behave
like the getters and check the value returned by
i2c_smbus_write_word_swapped().


I do not question that. I question changing the return value to -ENODEV.

Repeating my earlier question: Is the resistor value changed by software
or by changing the probe ?

Thanks,
Guenter

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