提交 d61a0686 编写于 作者: B Ben Skeggs 提交者: Dave Airlie

drm/kms: allow drm_mode_group with no objects

Sometimes we could be controlling a device (such as an NVIDIA Tesla) that
has no crtcs/encoders/connectors.

One could argue that the driver should unset DRIVER_MODESET in this case,
but that changes a whole heap of the DRM's other behaviours, and it's much
easier to just be a modesetting driver without any outputs.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
上级 ccd6895d
......@@ -886,9 +886,6 @@ int drm_mode_group_init(struct drm_device *dev, struct drm_mode_group *group)
total_objects += dev->mode_config.num_connector;
total_objects += dev->mode_config.num_encoder;
if (total_objects == 0)
return -EINVAL;
group->id_list = kzalloc(total_objects * sizeof(uint32_t), GFP_KERNEL);
if (!group->id_list)
return -ENOMEM;
......
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