On Sat, Dec 26, 2015 at 09:52:11AM +0100, SF Markus Elfring wrote:
> >> The kfree() function was called in one case by the
> >> acpi_i2c_space_handler() function during error handling
> >> even if the passed variable "client" contained a null pointer.
> > 
> > This is OK. kfree() is known to be NULL-tolerant and we rely on it in
> > various places to keep the code simpler.
> I would appreciate if an unnecessary function call can be avoided here
> so that the affected exception handling can become also a bit more efficient.

Simpler code is easier to maintain. See your patch, you didn't get it
correctly at your first try. Also, this is not a hot path, so I see
it as a micro-optimization also adding complexity. I don't favor that.

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