diff options
Diffstat (limited to 'drivers/gpu/drm/tegra/gem.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/gem.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 8672f5d2f237..424569b53e57 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -128,12 +128,14 @@ static int tegra_bo_iommu_map(struct tegra_drm *tegra, struct tegra_bo *bo) if (!bo->mm) return -ENOMEM; + mutex_lock(&tegra->mm_lock); + err = drm_mm_insert_node_generic(&tegra->mm, bo->mm, bo->gem.size, PAGE_SIZE, 0, 0); if (err < 0) { dev_err(tegra->drm->dev, "out of I/O virtual memory: %zd\n", err); - goto free; + goto unlock; } bo->paddr = bo->mm->start; @@ -147,11 +149,14 @@ static int tegra_bo_iommu_map(struct tegra_drm *tegra, struct tegra_bo *bo) bo->size = err; + mutex_unlock(&tegra->mm_lock); + return 0; remove: drm_mm_remove_node(bo->mm); -free: +unlock: + mutex_unlock(&tegra->mm_lock); kfree(bo->mm); return err; } @@ -161,8 +166,11 @@ static int tegra_bo_iommu_unmap(struct tegra_drm *tegra, struct tegra_bo *bo) if (!bo->mm) return 0; + mutex_lock(&tegra->mm_lock); iommu_unmap(tegra->domain, bo->paddr, bo->size); drm_mm_remove_node(bo->mm); + mutex_unlock(&tegra->mm_lock); + kfree(bo->mm); return 0; |