diff options
Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_mmu.c')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_mmu.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c index 762b1bd2a8c2..92ac995dd9c6 100644 --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c @@ -156,6 +156,9 @@ int panfrost_mmu_map(struct panfrost_gem_object *bo) struct sg_table *sgt; int ret; + if (WARN_ON(bo->is_mapped)) + return 0; + sgt = drm_gem_shmem_get_pages_sgt(obj); if (WARN_ON(IS_ERR(sgt))) return PTR_ERR(sgt); @@ -189,6 +192,7 @@ int panfrost_mmu_map(struct panfrost_gem_object *bo) pm_runtime_mark_last_busy(pfdev->dev); pm_runtime_put_autosuspend(pfdev->dev); + bo->is_mapped = true; return 0; } @@ -203,6 +207,9 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo) size_t unmapped_len = 0; int ret; + if (WARN_ON(!bo->is_mapped)) + return; + dev_dbg(pfdev->dev, "unmap: iova=%llx, len=%zx", iova, len); ret = pm_runtime_get_sync(pfdev->dev); @@ -230,6 +237,7 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo) pm_runtime_mark_last_busy(pfdev->dev); pm_runtime_put_autosuspend(pfdev->dev); + bo->is_mapped = false; } static void mmu_tlb_inv_context_s1(void *cookie) |