[PATCH 1/2] drm: report consistent errors when checking syncobj capibility

[Christian König]

Am 16.04.19 um 14:30 schrieb Lionel Landwerlin:
> We've been somewhat inconsistent when adding the new ioctl and
> returned ENODEV instead of EOPNOTSUPPORTED upon failing the syncobj
> capibility.
>
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
> Fixes: ea569910cbab98 ("drm/syncobj: add transition iotcls between binary and timeline v2")
> Fixes: 01d6c357837918 ("drm/syncobj: add support for timeline point wait v8")
> Cc: Dave Airlie <airlied at redhat.com>
> Cc: Christian König <christian.koenig at amd.com>
> Cc: Chunming Zhou <david1.zhou at amd.com>

Reviewed-by: Christian König <christian.koenig at amd.com> for the series.

How about also adding a DRM_CAP_TIMELINE_SYNCOBJ as Daniel suggested so 
that userspace can note that as well?

Thanks,
Christian.

> ---
>   drivers/gpu/drm/drm_syncobj.c | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
> index c534c5d46f1e..fb65f13d25cf 100644
> --- a/drivers/gpu/drm/drm_syncobj.c
> +++ b/drivers/gpu/drm/drm_syncobj.c
> @@ -756,7 +756,7 @@ drm_syncobj_transfer_ioctl(struct drm_device *dev, void *data,
>   	int ret;
>   
>   	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
> -		return -ENODEV;
> +		return -EOPNOTSUPP;
>   
>   	if (args->pad)
>   		return -EINVAL;
> @@ -1107,7 +1107,7 @@ drm_syncobj_timeline_wait_ioctl(struct drm_device *dev, void *data,
>   	int ret = 0;
>   
>   	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
> -		return -ENODEV;
> +		return -EOPNOTSUPP;
>   
>   	if (args->flags & ~(DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL |
>   			    DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT |