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drm/armada: use unlocked gem unreferencing 

For drm_gem_object_unreference callers are required to hold
dev->struct_mutex, which these paths don't. Enforcing this requirement
has become a bit more strict with

commit ef4c6270bf
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Oct 15 09:36:25 2015 +0200

    drm/gem: Check locking in drm_gem_object_unreference

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Daniel Vetter 2015-11-23 10:32:34 +01:00 committed by Russell King
parent 7cb410cdbd
commit 7a6f7133c5
2 changed files with 3 additions and 3 deletions
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2
drivers/gpu/drm/armada/armada_crtc.c
View File

@ -972,7 +972,7 @@ static void armada_drm_crtc_destroy(struct drm_crtc *crtc)
struct armada_private *priv = crtc->dev->dev_private;
if (dcrtc->cursor_obj)
drm_gem_object_unreference(&dcrtc->cursor_obj->obj);
drm_gem_object_unreference_unlocked(&dcrtc->cursor_obj->obj);
priv->dcrtc[dcrtc->num] = NULL;
drm_crtc_cleanup(&dcrtc->crtc);

4
drivers/gpu/drm/armada/armada_gem.c
View File

@ -352,13 +352,13 @@ int armada_gem_mmap_ioctl(struct drm_device *dev, void *data,
return -ENOENT;
if (!dobj->obj.filp) {
drm_gem_object_unreference(&dobj->obj);
drm_gem_object_unreference_unlocked(&dobj->obj);
return -EINVAL;
}
addr = vm_mmap(dobj->obj.filp, 0, args->size, PROT_READ | PROT_WRITE,
MAP_SHARED, args->offset);
drm_gem_object_unreference(&dobj->obj);
drm_gem_object_unreference_unlocked(&dobj->obj);
if (IS_ERR_VALUE(addr))
return addr;