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drm: Return -EOPNOTSUPP in drm_setclientcap() when driver do not support KMS 

All DRM_CLIENT capabilities are tied to KMS support, so returning
-EOPNOTSUPP when KMS is not supported.

v2: returning -EOPNOTSUPP(same value as posix ENOTSUP and available
in uapi) instead of -ENOTSUPP

v3: adding comments about the feature requirement about capabilities

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180918174809.17123-1-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2018-09-18 10:48:09 -07:00 committed by Daniel Vetter
parent 14e86c0141
commit adbc8208e6
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/drm_ioctl.c
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@ -306,6 +306,12 @@ drm_setclientcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
struct drm_set_client_cap *req = data;
/* No render-only settable capabilities for now */
/* Below caps that only works with KMS drivers */
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EOPNOTSUPP;
switch (req->capability) {
case DRM_CLIENT_CAP_STEREO_3D:
if (req->value > 1)