drm/nouveau/kms: don't fail if there's no dcb table entries

Fixes module not loading on Tesla K20.

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

diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 6aa2137..e09817d 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -1878,9 +1878,6 @@ parse_dcb_table(struct drm_device *dev, struct nvbios *bios)
        if (dcb->version < 0x21)
                merge_like_dcb_entries(dev, dcb);
 
-       if (!dcb->entries)
-               return -ENXIO;
-
        /* dump connector table entries to log, if any exist */
        idx = -1;
        while ((conn = olddcb_conn(dev, ++idx))) {

diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index f17dc2a..0b6c296 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -332,10 +332,15 @@ nouveau_display_create(struct drm_device *dev)
 
        if (nouveau_modeset == 1 ||
            (nouveau_modeset < 0 && pclass == PCI_CLASS_DISPLAY_VGA)) {
-               if (nv_device(drm->device)->card_type < NV_50)
-                       ret = nv04_display_create(dev);
-               else
-                       ret = nv50_display_create(dev);
+               if (drm->vbios.dcb.entries) {
+                       if (nv_device(drm->device)->card_type < NV_50)
+                               ret = nv04_display_create(dev);
+                       else
+                               ret = nv50_display_create(dev);
+               } else {
+                       ret = 0;
+               }
+
                if (ret)
                        goto disp_create_err;