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drm/i915: Fixup legacy plane->crtc link for initial fb config
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 25 Mar 2015 17:30:38 +0000 (18:30 +0100)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Thu, 26 Mar 2015 12:04:37 +0000 (13:04 +0100)
commit5097f8c72a38128e99ae2869e397a2f43d0a0b51
tree780b739c80842c3d98af1505487b97fd34abc93f
parentab585dea120fa20313b1b5a3be2b3d614f094678
drm/i915: Fixup legacy plane->crtc link for initial fb config

This is a very similar bug in the load detect code fixed in

commit 9128b040eb774e04bc23777b005ace2b66ab2a85
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Tue Mar 3 17:31:21 2015 +0100

    drm/i915: Fix modeset state confusion in the load detect code

But this time around it was the initial fb code that forgot to update
the plane->crtc pointer. Otherwise it's the exact same bug, with the
exact same restrains (any set_config call/ioctl that doesn't disable
the pipe papers over the bug for free, so fairly hard to hit in normal
testing). So if you want the full explanation just go read that one
over there - it's rather long ...

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Reported-and-tested-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_display.c