Now that the IOMMU is the master of it's own power we don't need to bring
up the GPU to do IOMMU operations. This is good because bringing up a6xx
requires the GMU so calling pm_runtime_get_sync() too early in the process
gets us into some nasty circular dependency situations.
Signed-off-by: Jordan Crouse <jcrouse@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/msm/msm_iommu.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iommu.c
index b23d33622f37..ccd93ac6a4d8 100644
--- a/drivers/gpu/drm/msm/msm_iommu.c
+++ b/drivers/gpu/drm/msm/msm_iommu.c
@@ -40,9 +40,7 @@ static int msm_iommu_attach(struct msm_mmu *mmu, const char * const *names,
struct msm_iommu *iommu = to_msm_iommu(mmu);
int ret;
- pm_runtime_get_sync(mmu->dev);
ret = iommu_attach_device(iommu->domain, mmu->dev);
- pm_runtime_put_sync(mmu->dev);
return ret;
}
@@ -52,9 +50,7 @@ static void msm_iommu_detach(struct msm_mmu *mmu, const char * const *names,
{
struct msm_iommu *iommu = to_msm_iommu(mmu);
- pm_runtime_get_sync(mmu->dev);
iommu_detach_device(iommu->domain, mmu->dev);
- pm_runtime_put_sync(mmu->dev);
}
static int msm_iommu_map(struct msm_mmu *mmu, uint64_t iova,
@@ -63,9 +59,7 @@ static int msm_iommu_map(struct msm_mmu *mmu, uint64_t iova,
struct msm_iommu *iommu = to_msm_iommu(mmu);
size_t ret;
-// pm_runtime_get_sync(mmu->dev);
ret = iommu_map_sg(iommu->domain, iova, sgt->sgl, sgt->nents, prot);
-// pm_runtime_put_sync(mmu->dev);
WARN_ON(ret < 0);
return (ret == len) ? 0 : -EINVAL;
@@ -76,9 +70,7 @@ static int msm_iommu_unmap(struct msm_mmu *mmu, uint64_t iova,
{
struct msm_iommu *iommu = to_msm_iommu(mmu);
- pm_runtime_get_sync(mmu->dev);
iommu_unmap(iommu->domain, iova, len);
- pm_runtime_put_sync(mmu->dev);
return 0;
}
--
2.17.1
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