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drm/i915: implement crtc helper semantics relied upon by the fb helper

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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.

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2012-07-10 17:53:42 +02:00
parent 2e43105183
commit 431e50f799
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/intel_display.c
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@ -6934,6 +6934,12 @@ static int intel_crtc_set_config(struct drm_mode_set *set)
if (!set->mode) if (!set->mode)
set->fb = NULL; 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) { if (set->fb) {
DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n",
set->crtc->base.id, set->fb->base.id, set->crtc->base.id, set->fb->base.id,