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[ Upstream commit7ce98fb6c5] SBE fifo operations should be allowed while the SBE is in any of the "IPL" states. Operations should succeed in this state. Fixes:9f4a8a2d7ffsi/sbefifo: Add driver for the SBE FIFO Reviewed-by: Joel Stanley <joel@jms.id.au> Tested-by: Alistair Popple <alistair@popple.id.au> Signed-off-by: Eddie James <eajames@linux.ibm.com> Link: https://lore.kernel.org/r/1561575415-3282-1-git-send-email-eajames@linux.ibm.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>