RE: [PATCH v1 1/2] ACPI: NFIT: Fix memory leak, and local use of devm_*()

[Dan Williams]

Michal Wilczynski wrote:
> devm_*() family of functions purpose is managing memory attached to a
> device. So in general it should only be used for allocations that should
> last for the whole lifecycle of the device. This is not the case for
> acpi_nfit_init_interleave_set(). There are two allocations that are only
> used locally in this function. What's more - if the function exits on
> error path memory is never freed. It's still attached to dev and would
> be freed on device detach, so this leak could be called a 'local leak'.

This analysis is incorrect devm cleans up on driver ->probe() failure in
addition to ->remove(), and these error returns result in ->probe()
failures. No leak, i.e. this is not a fix.

The conversion to modern probe is ok if you want to resubmit that one
without this intervening change.