With deferred fbdev setup we always need to forward hotplug events,
even if fbdev isn't fully set up yet. Otherwise the deferred setup
will neer happen.
Originally this check was added in
commit c45eb4fed12d278d3619f1904885bd0d7bcbf036 (tag: drm-intel-next-fixes-2016-08-05)
Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Date: Wed Jul 13 18:34:45 2016 +0100
drm/i915/fbdev: Check for the framebuffer before use
But the specific case of the hotplug function blowing up was fixed in
commit 50c3dc970a09b3b60422a58934cc27a413288bab
Author: Daniel Vetter <daniel.vetter@xxxxxxxx>
Date: Fri Jun 27 17:19:22 2014 +0200
drm/fb-helper: Fix hpd vs. initial config races
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_fbdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_fbdev.c b/drivers/gpu/drm/i915/intel_fbdev.c
index f11ee039ff45..5536591d3da0 100644
--- a/drivers/gpu/drm/i915/intel_fbdev.c
+++ b/drivers/gpu/drm/i915/intel_fbdev.c
@@ -821,7 +821,7 @@ void intel_fbdev_output_poll_changed(struct drm_device *dev)
{
struct intel_fbdev *ifbdev = to_i915(dev)->fbdev;
- if (ifbdev && ifbdev->vma)
+ if (ifbdev)
drm_fb_helper_hotplug_event(&ifbdev->helper);
}
--
2.13.2
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