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| author | Hiroshi DOYU <hdoyu@nvidia.com> | 2012-06-27 12:54:01 +0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-07-02 11:56:44 +0200 |
| commit | 8f53dc724a83a0082184fa27df80c25c7df47340 (patch) | |
| tree | ae15ec7282706da6947bd97d87354d7dbe58b6b0 /drivers/iommu/tegra-smmu.c | |
| parent | ac1534a55d1e87d59a21c09c570605933b551480 (diff) | |
| download | linux-8f53dc724a83a0082184fa27df80c25c7df47340.tar.gz linux-8f53dc724a83a0082184fa27df80c25c7df47340.tar.bz2 linux-8f53dc724a83a0082184fa27df80c25c7df47340.zip | |
iommu/tegra: smmu: Fix unsleepable memory allocation
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 <hdoyu@nvidia.com>
Reported-by: Chris Wright <chrisw@sous-sol.org>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/tegra-smmu.c')
| -rw-r--r-- | 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 ecd679043d77..3f3d09d560ea 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"); |