Yikes!
But yeah, we have to do this until someone volunteers to clean up the
fb helper and rid it of its incetious relationship with the crtc
helper code.
Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
---
drivers/gpu/drm/i915/intel_display.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index d11d866..c38d503 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6860,6 +6860,12 @@ static int intel_crtc_set_config(struct drm_mode_set
*set)
if (!set->mode)
set->fb = NULL;
+ /* The fb helper likes to play gross jokes with ->mode_set_config.
+ * Unfortunately the crtc helper doesn't do much at all for this case,
+ * so we have to cope with this madness until the fb helper is fixed
up. */
+ if (set->fb && set->num_connectors == 0)
+ return 0;
+
if (set->fb) {
DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i
%i)\n",
set->crtc->base.id, set->fb->base.id,
--
1.7.10.4
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