drm: cleanup exit path for module unload

The current sub-module unload exit path is a mess, it tries
to abuse the idr. Just keep a list of devices per driver struct
and free them in-order on rmmod.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 66c96ec66672..849c0a9fe7fd 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -270,6 +270,8 @@ int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
         if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
                 goto err_g2;
 
+        list_add_tail(&dev->driver_item, &driver->device_list);
+
         DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
                  driver->name, driver->major, driver->minor, driver->patchlevel,
                  driver->date, dev->primary->index);