diff options
| -rw-r--r-- | drivers/gpu/drm/drm_lease.c | 39 | ||||
| -rw-r--r-- | include/uapi/drm/drm_mode.h | 3 |
2 files changed, 20 insertions, 22 deletions
diff --git a/drivers/gpu/drm/drm_lease.c b/drivers/gpu/drm/drm_lease.c index dee4f24a1808..d72c2fac0ff1 100644 --- a/drivers/gpu/drm/drm_lease.c +++ b/drivers/gpu/drm/drm_lease.c @@ -489,12 +489,6 @@ int drm_mode_create_lease_ioctl(struct drm_device *dev, if (!drm_core_check_feature(dev, DRIVER_MODESET)) return -EOPNOTSUPP; - /* need some objects */ - if (cl->object_count == 0) { - DRM_DEBUG_LEASE("no objects in lease\n"); - return -EINVAL; - } - if (cl->flags && (cl->flags & ~(O_CLOEXEC | O_NONBLOCK))) { DRM_DEBUG_LEASE("invalid flags\n"); return -EINVAL; @@ -510,23 +504,26 @@ int drm_mode_create_lease_ioctl(struct drm_device *dev, object_count = cl->object_count; - object_ids = memdup_user(u64_to_user_ptr(cl->object_ids), - array_size(object_count, sizeof(__u32))); - if (IS_ERR(object_ids)) { - ret = PTR_ERR(object_ids); - goto out_lessor; - } - + /* Handle leased objects, if any */ idr_init(&leases); + if (object_count != 0) { + object_ids = memdup_user(u64_to_user_ptr(cl->object_ids), + array_size(object_count, sizeof(__u32))); + if (IS_ERR(object_ids)) { + ret = PTR_ERR(object_ids); + idr_destroy(&leases); + goto out_lessor; + } - /* fill and validate the object idr */ - ret = fill_object_idr(dev, lessor_priv, &leases, - object_count, object_ids); - kfree(object_ids); - if (ret) { - DRM_DEBUG_LEASE("lease object lookup failed: %i\n", ret); - idr_destroy(&leases); - goto out_lessor; + /* fill and validate the object idr */ + ret = fill_object_idr(dev, lessor_priv, &leases, + object_count, object_ids); + kfree(object_ids); + if (ret) { + DRM_DEBUG_LEASE("lease object lookup failed: %i\n", ret); + idr_destroy(&leases); + goto out_lessor; + } } /* Allocate a file descriptor for the lease */ diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index e4a2570a6058..e1e351682872 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -1112,7 +1112,8 @@ struct drm_mode_destroy_blob { * Lease mode resources, creating another drm_master. * * The @object_ids array must reference at least one CRTC, one connector and - * one plane if &DRM_CLIENT_CAP_UNIVERSAL_PLANES is enabled. + * one plane if &DRM_CLIENT_CAP_UNIVERSAL_PLANES is enabled. Alternatively, + * the lease can be completely empty. */ struct drm_mode_create_lease { /** @object_ids: Pointer to array of object ids (__u32) */ |