huhai 5ed5f8db95 powerpc/4xx: Don't unmap NULL mbase
[ Upstream commit bcec081ecc940fc38730b29c743bbee661164161 ]

Signed-off-by: huhai <huhai@tj.kylinos.cn>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200521072648.1254699-1-mpe@ellerman.id.au
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-24 17:50:36 +02:00
..
2020-05-10 10:31:31 +02:00
2019-09-27 13:02:19 -07:00
2020-01-14 20:08:35 +01:00