Re: [PATCH V1 2/2] i2c: tegra: support for I2C_M_NOSTART protocolmangling

[Mark Brown]

On Tue, Apr 24, 2012 at 02:32:41PM +0200, Jean Delvare wrote:

> Please keep in mind that support for I2C_M_NOSTART at the bus driver
> level is optional. This means that device drivers are encouraged to not
> rely on it unconditionally. Originally the flag was meant to workaround

Yeah, for regmap we certainly have a fallback to kmalloc() a buffer as
needed in there already.  Like I say it's just an optimisation.

> If you want to do scatter-gather for I2C messages, I understand the
> benefit and I have no objection, and I agree that I2C_M_NOSTART lets
> you do that, but then:

> * We should allocate a new functionality flag for it.
> * We should update the documentation to reflect the two use cases.

That sounds like a good plan.  I'll try to get round to it if nobody
beats me to it.

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