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iommu/io-pgtable-arm: Fix pgtable allocation in selftest 

Commit 4b123757ee ("iommu/io-pgtable-arm: Make allocations
NUMA-aware") added a NUMA hint to page table allocation, but the pgtable
selftest doesn't provide an SMMU device parameter. Since dev_to_node
doesn't accept a NULL argument, add a special case for selftest.

Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Jean-Philippe Brucker 2018-06-18 12:27:54 +01:00 committed by Will Deacon
parent ce397d215c
commit fac83d29d9
1 changed files with 2 additions and 1 deletions
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3
drivers/iommu/io-pgtable-arm.c
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@ -237,7 +237,8 @@ static void *__arm_lpae_alloc_pages(size_t size, gfp_t gfp,
void *pages; void *pages;
VM_BUG_ON((gfp & __GFP_HIGHMEM)); VM_BUG_ON((gfp & __GFP_HIGHMEM));
p = alloc_pages_node(dev_to_node(dev), gfp | __GFP_ZERO, order); p = alloc_pages_node(dev ? dev_to_node(dev) : NUMA_NO_NODE,
gfp | __GFP_ZERO, order);
if (!p) if (!p)
return NULL; return NULL;