drm/i915: Update load-detect failure paths for modeset-rework
authorChris Wilson <chris@chris-wilson.co.uk>
Mon, 5 Nov 2012 22:25:08 +0000 (22:25 +0000)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Sun, 11 Nov 2012 22:51:47 +0000 (23:51 +0100)
After the rework, intel_set_mode() became a little better behaved in
restoring the current mode if we failed to apply the requested modeline.
However, the failure path for load-detect would clobber the existing
state, leading to an oops during BIOS takeover on older machines.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_display.c

index 029e008..6d8a5ed 100644 (file)
@@ -6600,24 +6600,19 @@ bool intel_get_load_detect_pipe(struct drm_connector *connector,
                DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
        if (IS_ERR(fb)) {
                DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
-               goto fail;
+               return false;
        }
 
        if (!intel_set_mode(crtc, mode, 0, 0, fb)) {
                DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
                if (old->release_fb)
                        old->release_fb->funcs->destroy(old->release_fb);
-               goto fail;
+               return false;
        }
 
        /* let the connector get through one full cycle before testing */
        intel_wait_for_vblank(dev, intel_crtc->pipe);
-
        return true;
-fail:
-       connector->encoder = NULL;
-       encoder->crtc = NULL;
-       return false;
 }
 
 void intel_release_load_detect_pipe(struct drm_connector *connector,