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Diffstat (limited to 'drivers/gpu/drm/tegra/drm.c')
| -rw-r--r-- | drivers/gpu/drm/tegra/drm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c index ef215fef63d6..90041d5388d1 100644 --- a/drivers/gpu/drm/tegra/drm.c +++ b/drivers/gpu/drm/tegra/drm.c @@ -142,6 +142,7 @@ static int tegra_drm_load(struct drm_device *drm, unsigned long flags) DRM_DEBUG_DRIVER("IOMMU aperture initialized (%#llx-%#llx)\n", start, end); drm_mm_init(&tegra->mm, start, end - start + 1); + mutex_init(&tegra->mm_lock); } mutex_init(&tegra->clients_lock); @@ -208,6 +209,7 @@ config: if (tegra->domain) { iommu_domain_free(tegra->domain); drm_mm_takedown(&tegra->mm); + mutex_destroy(&tegra->mm_lock); } free: kfree(tegra); @@ -232,6 +234,7 @@ static void tegra_drm_unload(struct drm_device *drm) if (tegra->domain) { iommu_domain_free(tegra->domain); drm_mm_takedown(&tegra->mm); + mutex_destroy(&tegra->mm_lock); } kfree(tegra); @@ -878,7 +881,9 @@ static int tegra_debugfs_iova(struct seq_file *s, void *data) struct tegra_drm *tegra = drm->dev_private; struct drm_printer p = drm_seq_file_printer(s); + mutex_lock(&tegra->mm_lock); drm_mm_print(&tegra->mm, &p); + mutex_unlock(&tegra->mm_lock); return 0; } |