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(parent: 0b4801a) | patch
powerpc/iommu: Avoid derefence before pointer check
authorBreno Leitao <leitao@debian.org>
Tue, 21 Aug 2018 18:44:48 +0000 (15:44 -0300)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 19 Sep 2018 11:58:09 +0000 (21:58 +1000)
commit266643e404a4cdb1a4500d44f5c61ba5115badf8
tree4eb2bb5bf308d08eb4791b8cd5b34f4863019cb2tree | snapshot
parent0b4801af92a4a5063105c575b05bd2ed05d37d5ccommit | diff
powerpc/iommu: Avoid derefence before pointer check

The tbl pointer is being derefenced by IOMMU_PAGE_SIZE prior the check
if it is not NULL.

Just moving the dereference code to after the check, where there will
be guarantee that 'tbl' will not be NULL.

Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/kernel/iommu.c diff | blob | history
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