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H A Dfsi-scom.cdiff 162c3946734d1f1950b413bbb3182d76d5be484b Tue Jun 12 07:19:07 CEST 2018 Benjamin Herrenschmidt <benh@kernel.crashing.org> fsi: scom: Add mutex around FSI2PIB accesses

Otherwise, multiple clients can open the driver and attempt
to access the PIB at the same time, thus clobbering each other
in the process.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Eddie James <eajames@linux.vnet.ibm.com>