[PATCH] i2c: at91: add a sanity check on i2c message length

[w.sang@pengutronix.de (Wolfram Sang)]

> >>Yes SMBUS quick command is supported but is not managed in the
> >>driver, we have to tell explicitly the IP that we want to send this
> >>command.
> >
> >Ok, so unless you want to implement the support, please update this
> >patch with a comment that SMBUS_QUICK is a TODO and remove the
> >SMBUS_QUICK capability.
> >
> 
> Implementation should not be a huge task, only one bit to set in a
> register but I have no device to test it.

'i2cdetect' from i2c-tools uses SMBUS_QUICK as one method to detect
chips. Most slaves (both I2C and SMBus) react to that, so that would do
in my book.

> Did you test the driver with SMBus compatible devices? Can I keep
> other SMBus capabilities from SMBUS_EMUL?

The rest should be fine.

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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