powerpc/powernv: Fix NVRAM sleep in invalid context when crashing

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commit c1d2a31397 upstream.

Similarly to opal_event_shutdown, opal_nvram_write can be called in
the crash path with irqs disabled. Special case the delay to avoid
sleeping in invalid context.

Fixes: 3b8070335f ("powerpc/powernv: Fix OPAL NVRAM driver OPAL_BUSY loops")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Nicholas Piggin 2018-05-15 01:59:47 +10:00 • committed by Ben Hutchings

parent 9257151618

commit 05e362bb0d

1 changed files with 12 additions and 2 deletions

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arch/powerpc/platforms/powernv/opal-nvram.c

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