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| author | Will Deacon <will@kernel.org> | 2024-07-12 17:53:39 +0200 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-07-12 17:53:39 +0200 |
| commit | 5012650a15e4eea14bcd34be1feffb57ee91940d (patch) | |
| tree | 4c6ce60f7dbca3d389d2aa6eab16ab17ab69b80f | |
| parent | Merge branch 'iommu/allwinner/sun50i' into iommu/next (diff) | |
| parent | iommu/amd: Use try_cmpxchg64() in v2_alloc_pte() (diff) | |
| download | linux-5012650a15e4eea14bcd34be1feffb57ee91940d.tar.xz linux-5012650a15e4eea14bcd34be1feffb57ee91940d.zip | |
Merge branch 'iommu/amd/amd-vi' into iommu/next
* iommu/amd/amd-vi:
iommu/amd: Use try_cmpxchg64() in v2_alloc_pte()
| -rw-r--r-- | drivers/iommu/amd/io_pgtable_v2.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd/io_pgtable_v2.c b/drivers/iommu/amd/io_pgtable_v2.c index 78ac37c5ccc1..664e91c88748 100644 --- a/drivers/iommu/amd/io_pgtable_v2.c +++ b/drivers/iommu/amd/io_pgtable_v2.c @@ -158,7 +158,7 @@ static u64 *v2_alloc_pte(int nid, u64 *pgd, unsigned long iova, __npte = set_pgtable_attr(page); /* pte could have been changed somewhere. */ - if (cmpxchg64(pte, __pte, __npte) != __pte) + if (!try_cmpxchg64(pte, &__pte, __npte)) iommu_free_page(page); else if (IOMMU_PTE_PRESENT(__pte)) *updated = true; |