drm: Propagate error from drm_fb_helper_init().

The previous commit fixes the problem, these commits make sure we actually
fail properly if it happens again.

I've squashed the commits from Chris since they are all fixing one issue.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_fb.c b/drivers/gpu/drm/radeon/radeon_fb.c
index e192acfbf0cd..dc1634bb0c11 100644
--- a/drivers/gpu/drm/radeon/radeon_fb.c
+++ b/drivers/gpu/drm/radeon/radeon_fb.c
@@ -363,6 +363,7 @@ int radeon_fbdev_init(struct radeon_device *rdev)
 {
         struct radeon_fbdev *rfbdev;
         int bpp_sel = 32;
+        int ret;
 
         /* select 8 bpp console on RN50 or 16MB cards */
         if (ASIC_IS_RN50(rdev) || rdev->mc.real_vram_size <= (32*1024*1024))
@@ -376,9 +377,14 @@ int radeon_fbdev_init(struct radeon_device *rdev)
         rdev->mode_info.rfbdev = rfbdev;
         rfbdev->helper.funcs = &radeon_fb_helper_funcs;
 
-        drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
-                           rdev->num_crtc,
-                           RADEONFB_CONN_LIMIT);
+        ret = drm_fb_helper_init(rdev->ddev, &rfbdev->helper,
+                                 rdev->num_crtc,
+                                 RADEONFB_CONN_LIMIT);
+        if (ret) {
+                kfree(rfbdev);
+                return ret;
+        }
+
         drm_fb_helper_single_add_all_connectors(&rfbdev->helper);
         drm_fb_helper_initial_config(&rfbdev->helper, bpp_sel);
         return 0;