drm/nouveau/nvif: extend nop ioctl to return nvif version identifier

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvif/client.c b/drivers/gpu/drm/nouveau/nvif/client.c
index 64d3d0c37a83..1ee9294eca2e 100644
--- a/drivers/gpu/drm/nouveau/nvif/client.c
+++ b/drivers/gpu/drm/nouveau/nvif/client.c
@@ -71,6 +71,10 @@ int
 nvif_client_init(const char *driver, const char *name, u64 device,
                  const char *cfg, const char *dbg, struct nvif_client *client)
 {
+        struct {
+                struct nvif_ioctl_v0 ioctl;
+                struct nvif_ioctl_nop_v0 nop;
+        } args = {};
         int ret, i;
 
         ret = nvif_object_init(NULL, 0, 0, NULL, 0, &client->object);
@@ -91,6 +95,11 @@ nvif_client_init(const char *driver, const char *name, u64 device,
                 }
         }
 
+        if (ret == 0) {
+                ret = nvif_client_ioctl(client, &args, sizeof(args));
+                client->version = args.nop.version;
+        }
+
         if (ret)
                 nvif_client_fini(client);
         return ret;