tree 3e46821fac9d3de604466b55345c2b267d157355
parent c7d5a0050773e98d1094eaa9f2a1a793fafac300
author David S. Miller <davem@davemloft.net> 1267635963 -0800
committer David S. Miller <davem@davemloft.net> 1267635963 -0800

sparc64: Make prom entry spinlock NMI safe.

If we do something like try to print to the OF console from an NMI
while we're already in OpenFirmware, we'll deadlock on the spinlock.

Use a raw spinlock and disable NMIs when we take it.

Signed-off-by: David S. Miller <davem@davemloft.net>