allo_pdir() is called in smmu_iommu_domain_init() with spin_lock held. memory allocations in it have to be atomic/unsleepable.
Signed-off-by: Hiroshi DOYU <[email protected]> Reported-by: Chris Wright <[email protected]> Acked-by: Chris Wright <[email protected]> --- drivers/iommu/tegra-smmu.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index ecd6790..3f3d09d 100644 --- a/drivers/iommu/tegra-smmu.c +++ b/drivers/iommu/tegra-smmu.c @@ -550,13 +550,13 @@ static int alloc_pdir(struct smmu_as *as) return 0; as->pte_count = devm_kzalloc(smmu->dev, - sizeof(as->pte_count[0]) * SMMU_PDIR_COUNT, GFP_KERNEL); + sizeof(as->pte_count[0]) * SMMU_PDIR_COUNT, GFP_ATOMIC); if (!as->pte_count) { dev_err(smmu->dev, "failed to allocate smmu_device PTE cunters\n"); return -ENOMEM; } - as->pdir_page = alloc_page(GFP_KERNEL | __GFP_DMA); + as->pdir_page = alloc_page(GFP_ATOMIC | __GFP_DMA); if (!as->pdir_page) { dev_err(smmu->dev, "failed to allocate smmu_device page directory\n"); -- 1.7.5.4 _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
