On Wed, May 4, 2016 at 8:29 AM, Daniel Vetter <daniel.vetter@xxxxxxxx> wrote:
> Embarrassingly while fixing up the old paths for i915 I managed to
> misplace a locking check for the new _unlocked paths. That's what I
> get for not retesting on radeon.
>
> Fixes: 9f0ba539d13a ("drm/gem: support BO freeing without dev->struct_mutex")
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Alex Deucher <alexdeucher@xxxxxxxxx>
> Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> Tested-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
> drivers/gpu/drm/drm_gem.c | 9 +++++----
> 1 file changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
> index 973eb8805ce0..f716308fb48c 100644
> --- a/drivers/gpu/drm/drm_gem.c
> +++ b/drivers/gpu/drm/drm_gem.c
> @@ -804,12 +804,13 @@ drm_gem_object_free(struct kref *kref)
> container_of(kref, struct drm_gem_object, refcount);
> struct drm_device *dev = obj->dev;
>
> - WARN_ON(!mutex_is_locked(&dev->struct_mutex));
> -
> - if (dev->driver->gem_free_object_unlocked)
> + if (dev->driver->gem_free_object_unlocked) {
> dev->driver->gem_free_object_unlocked(obj);
> - else if (dev->driver->gem_free_object)
> + } else if (dev->driver->gem_free_object) {
> + WARN_ON(!mutex_is_locked(&dev->struct_mutex));
> +
> dev->driver->gem_free_object(obj);
> + }
> }
> EXPORT_SYMBOL(drm_gem_object_free);
>
> --
> 2.8.1
>
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