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| author | Joerg Roedel <jroedel@suse.de> | 2015-12-21 12:50:54 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2015-12-28 17:18:50 +0100 |
| commit | a7fb668fd88c979e790f0c324a1a6d749a8c5a60 (patch) | |
| tree | 9fb7c02a178944b525505bef4ff98dce746e5ebf /drivers/iommu/amd_iommu.c | |
| parent | iommu/amd: Constify mmu_notifier_ops structures (diff) | |
| download | linux-a7fb668fd88c979e790f0c324a1a6d749a8c5a60.tar.xz linux-a7fb668fd88c979e790f0c324a1a6d749a8c5a60.zip | |
iommu/amd: Warn only once on unexpected pte value
This prevents possible flooding of the kernel log.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 8b2be1e7714f..3cdfac6024a5 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2328,7 +2328,7 @@ static dma_addr_t dma_ops_domain_map(struct dma_ops_domain *dom, else if (direction == DMA_BIDIRECTIONAL) __pte |= IOMMU_PTE_IR | IOMMU_PTE_IW; - WARN_ON(*pte); + WARN_ON_ONCE(*pte); *pte = __pte; @@ -2357,7 +2357,7 @@ static void dma_ops_domain_unmap(struct dma_ops_domain *dom, pte += PM_LEVEL_INDEX(0, address); - WARN_ON(!*pte); + WARN_ON_ONCE(!*pte); *pte = 0ULL; } |