[PATCH v6 2/5] i2c: Add STM32F4 I2C driver

[Wolfram Sang]

> > +	if (ret) {
> > +		dev_err(i2c_dev->dev, "bus not free\n");
> > +		ret = -EBUSY;
> 
> I'm not sure if "bus not free" deserves an error message. Wolfram?

I tend to agree. But I never enforced it up to now, never found the time
to double check if I could/should enforce it.

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