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authorDaniel Vetter <daniel.vetter@ffwll.ch>2016-04-27 09:20:18 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-04-27 10:14:17 +0200
commit40647e45b92b1da599048332ec8fbd40d8d29457 (patch)
tree03a7910a5d4ce575ec2817e7161e4b3d02213f85 /drivers/gpu/drm/drm_drv.c
parente975eef07cbca53691f504318609bb95c7e5f1ac (diff)
downloadblackbird-op-linux-40647e45b92b1da599048332ec8fbd40d8d29457.tar.gz
blackbird-op-linux-40647e45b92b1da599048332ec8fbd40d8d29457.zip
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
Diffstat (limited to 'drivers/gpu/drm/drm_drv.c')
-rw-r--r--drivers/gpu/drm/drm_drv.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 55273f8f3acb..e1fb52d4f72c 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -121,19 +121,11 @@ static void drm_master_destroy(struct kref *kref)
{
struct drm_master *master = container_of(kref, struct drm_master, refcount);
struct drm_device *dev = master->minor->dev;
- struct drm_map_list *r_list, *list_temp;
if (dev->driver->master_destroy)
dev->driver->master_destroy(dev, master);
- mutex_lock(&dev->struct_mutex);
- list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) {
- if (r_list->master == master) {
- drm_legacy_rmmap_locked(dev, r_list->map);
- r_list = NULL;
- }
- }
- mutex_unlock(&dev->struct_mutex);
+ drm_legacy_master_rmmaps(dev, master);
idr_destroy(&master->magic_map);
kfree(master->unique);
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