On Mon, Oct 28, 2013 at 10:55:49AM +0100, David Herrmann wrote:
> DRM_IOCTL_VERSION is a reliable way to get the driver-name and version
> information. It's not related to the interface-version (SET_VERSION ioctl)
> so we can safely enable it on render-nodes.
>
> Note that gbm uses udev-BUSID to load the correct mesa driver. However,
> the VERSION ioctl should be the more reliable way to do this (in case we
> add new DRM-bus drivers which have no BUSID or similar).
>
> Signed-off-by: David Herrmann <dh.herrmann@xxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> ---
> drivers/gpu/drm/drm_drv.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index 21cd5f5..e01168b 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -61,7 +61,7 @@ static int drm_version(struct drm_device *dev, void *data,
>
> /** Ioctl table */
> static const struct drm_ioctl_desc drm_ioctls[] = {
> - DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED),
> + DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, DRM_UNLOCKED|DRM_RENDER_ALLOW),
> DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
> DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
> DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
> --
> 1.8.4.1
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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