Merge branch 'smsc95xx-deadlock'
Lukas Wunner says:
====================
Deadlock no more in LAN95xx
Second attempt at fixing a runtime resume deadlock in the LAN95xx USB driver:
In short, the driver isn't using the "nopm" register accessors in portions
of its runtime resume path, causing a deadlock. I'm fixing that by
auto-detecting whether nopm accessors shall be used, instead of
having to explicitly call them wherever it's necessary.
As a byproduct, code size shrinks significantly (see diffstat below).
Back in April I submitted a first attempt which was rejected by Alan Stern:
https://lore.kernel.org/all/
6710d8c18ff54139cdc538763ba544187c5a0cee.
1651041411.git.lukas@wunner.de/
That approach only detected whether a PM callback is running concurrently,
not whether the access is performed by the PM callback. I've come up with
a different approach which should resolve the objection (see patch [1/3]).
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Signed-off-by: David S. Miller <davem@davemloft.net>