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dpaa2-eth: Initialize mutex used in one step timestamping path
commit 07dd448 upstream. 1588 Single Step Timestamping code path uses a mutex to enforce atomicity for two events: - update of ptp single step register - transmit ptp event packet Before this patch the mutex was not initialized. This caused unexpected crashes in the Tx function. Fixes: c552118 ("dpaa2-eth: support PTP Sync packet one-step timestamping") Signed-off-by: Radu Bulie <radu-andrei.bulie@nxp.com> Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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