drm/radeon/kms: ignore unposted GPUs with no BIOS.

If we find a GPU but we can't find its BIOS and it isn't posted,
then ignore it.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/rs400.c b/drivers/gpu/drm/radeon/rs400.c
index f1de558..2e5b945 100644
--- a/drivers/gpu/drm/radeon/rs400.c
+++ b/drivers/gpu/drm/radeon/rs400.c
@@ -491,10 +491,9 @@
 			RREG32(R_0007C0_CP_STAT));
 	}
 	/* check if cards are posted or not */
-	if (!radeon_card_posted(rdev) && rdev->bios) {
-		DRM_INFO("GPU not posted. posting now...\n");
-		radeon_combios_asic_init(rdev->ddev);
-	}
+	if (radeon_boot_test_post_card(rdev) == false)
+		return -EINVAL;
+
 	/* Initialize clocks */
 	radeon_get_clock_info(rdev->ddev);
 	/* Get vram informations */