Merge tag 'drm-misc-next-2021-01-19' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.12:

UAPI Changes:
- Fix fourcc macro for amlogic video fbc.

Cross-subsystem Changes:
- Export pci_rebar_bytes_to_size.
- Add a PCI quirk to increase bar0 for RX 5600 XT Pulse to max possible size.
- Convert devicetree bindings to use the OF graph schema.
- Update s6e63m0 bindings.
- Make omapfb2 DSI_CM incompatible with drm/omap2 DSI-CM because of
  module conflicts.
- Add Zack Rusin as vmwgfx maintainer.
- Add CONFIG_DMABUF_DEBUG for validating dma-buf users don't loo kat struct page when importing or detaching.

Core Changes:
- Remove references to drm_device.pdev
- Fix regression in ttm_bo_move_to_lru_tail().
- Assorted docbook updates.
- Do not send dp-mst hotplug events on error when probing.
- Move some agp macros to agpsupport.c, so it's not always compiled.
- Move drm_need_swiotlb.h to drm_cache.c
- Only build drm_memory.o for legacy drivers, and move CONFIG_DRM_VM to legacy.
- Nuke drm_device.hose
- Warn when the ttm resource manager is non-empty when disabling.
- Assorted small fixes.

Driver Changes:
- Small assorted fixes in radeon, v3d, hisilicon, mipi-dbi, panfrost, hibmc, vc4, amdgpu, vkms, vmwgfx.
- Move hisilicon to use simple encode.
- Add writeback connector to vkms.
- Add support for BT2020 to DE3.
- Use gem prime mmap helpers in vc4, and move the mmap function upwards.
- Use managed drm device, and cleanup error paths and display registers in vmwgfx.
- Use correct bus_format and connector_type for innolux_n116bge.
- Fix a lot of warnings with W=1 (Lee Jones)

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/5c3ad775-48ce-33ee-e4c6-a5e1e540f845@linux.intel.com

1 files changed, 10 insertions, 9 deletions

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index 34b2f111c01c..c2ce78c4edc3 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -1068,20 +1068,17 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
 	drm_gem_object_get(obj);
 
 	vma->vm_private_data = obj;
+	vma->vm_ops = obj->funcs->vm_ops;
 
 	if (obj->funcs->mmap) {
 		ret = obj->funcs->mmap(obj, vma);
-		if (ret) {
-			drm_gem_object_put(obj);
-			return ret;
-		}
+		if (ret)
+			goto err_drm_gem_object_put;
 		WARN_ON(!(vma->vm_flags & VM_DONTEXPAND));
 	} else {
-		if (obj->funcs->vm_ops)
-			vma->vm_ops = obj->funcs->vm_ops;
-		else {
-			drm_gem_object_put(obj);
-			return -EINVAL;
+		if (!vma->vm_ops) {
+			ret = -EINVAL;
+			goto err_drm_gem_object_put;
 		}
 
 		vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
@@ -1090,6 +1087,10 @@ int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
 	}
 
 	return 0;
+
+err_drm_gem_object_put:
+	drm_gem_object_put(obj);
+	return ret;
 }
 EXPORT_SYMBOL(drm_gem_mmap_obj);