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path: root/drivers/gpu/drm/drm_ioctl.c
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Diffstat (limited to 'drivers/gpu/drm/drm_ioctl.c')
-rw-r--r--drivers/gpu/drm/drm_ioctl.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 0ad2c47f808f..fed22c2b98b6 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -229,6 +229,22 @@ static int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_
struct drm_crtc *crtc;
req->value = 0;
+
+ /* Only some caps make sense with UMS/render-only drivers. */
+ switch (req->capability) {
+ case DRM_CAP_TIMESTAMP_MONOTONIC:
+ req->value = drm_timestamp_monotonic;
+ return 0;
+ case DRM_CAP_PRIME:
+ req->value |= dev->driver->prime_fd_to_handle ? DRM_PRIME_CAP_IMPORT : 0;
+ req->value |= dev->driver->prime_handle_to_fd ? DRM_PRIME_CAP_EXPORT : 0;
+ return 0;
+ }
+
+ /* Other caps only work with KMS drivers */
+ if (!drm_core_check_feature(dev, DRIVER_MODESET))
+ return -ENOTSUPP;
+
switch (req->capability) {
case DRM_CAP_DUMB_BUFFER:
if (dev->driver->dumb_create)
@@ -243,13 +259,6 @@ static int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_
case DRM_CAP_DUMB_PREFER_SHADOW:
req->value = dev->mode_config.prefer_shadow;
break;
- case DRM_CAP_PRIME:
- req->value |= dev->driver->prime_fd_to_handle ? DRM_PRIME_CAP_IMPORT : 0;
- req->value |= dev->driver->prime_handle_to_fd ? DRM_PRIME_CAP_EXPORT : 0;
- break;
- case DRM_CAP_TIMESTAMP_MONOTONIC:
- req->value = drm_timestamp_monotonic;
- break;
case DRM_CAP_ASYNC_PAGE_FLIP:
req->value = dev->mode_config.async_page_flip;
break;