drm: Hide master MAP cleanup in drm_bufs.c
And again make sure it's a no-op for modern drivers. Another case of
dev->struct_mutex gone for modern drivers!
Note that the entirety of the legacy addmap interface is now protected
by DRIVER_MODESET. Note that just auditing kernel code is not enough,
since userspace loves to set up legacy maps on it's own for various
things - with ums userspace and kernel space share control over
resources.
v2: Also add a DRIVER_* check like for all other maps functions to
really short-circuit the code. And give drm_legacy_rmmap used by the
dev unregister code the same treatment.
v3:
- remove redundant return; (Alex, Chris)
- don't special case nouveau with DRIVER_KMS_LEGACY_CONTEXT.
v4: Again special case nouveau. The problem is not directly in the
ddx, but that it calls dri1 functions from the X server. And those do
call drmAddMap. Fixed only in
commit b1a630b48210d6a3c44994fce1b73273000ace5c
Author: Dave Airlie <airlied@redhat.com>
Date: Wed Nov 7 14:45:14 2012 +1000
nouveau: drop DRI1 device open interface.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461741618-12679-1-git-send-email-daniel.vetter@ffwll.ch
diff --git a/include/drm/drm_legacy.h b/include/drm/drm_legacy.h
index 3e69803..a5ef2c7 100644
--- a/include/drm/drm_legacy.h
+++ b/include/drm/drm_legacy.h
@@ -154,8 +154,10 @@
int drm_legacy_addmap(struct drm_device *d, resource_size_t offset,
unsigned int size, enum drm_map_type type,
enum drm_map_flags flags, struct drm_local_map **map_p);
-int drm_legacy_rmmap(struct drm_device *d, struct drm_local_map *map);
+void drm_legacy_rmmap(struct drm_device *d, struct drm_local_map *map);
int drm_legacy_rmmap_locked(struct drm_device *d, struct drm_local_map *map);
+void drm_legacy_master_rmmaps(struct drm_device *dev,
+ struct drm_master *master);
struct drm_local_map *drm_legacy_getsarea(struct drm_device *dev);
int drm_legacy_mmap(struct file *filp, struct vm_area_struct *vma);
