From: Daniel Vetter Date: Sun, 13 Apr 2014 10:00:33 +0000 (+0200) Subject: drm/i915: Don't check gmch state on inherited configs X-Git-Tag: omap-for-v3.16/pm-signed~33^2~7^2~5 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9953599bc02dbc1d3330e6a0bfc6c50e9dffcac6;p=pandora-kernel.git drm/i915: Don't check gmch state on inherited configs ... our current modeset code isn't good enough yet to handle this. The scenario is: 1. BIOS sets up a cloned config with lvds+external screen on the same pipe, e.g. pipe B. 2. We read out that state for pipe B and assign the gmch_pfit state to it. 3. The initial modeset switches the lvds to pipe A but due to lack of atomic modeset we don't recompute the config of pipe B. -> both pipes now claim (in the sw pipe config structure) to use the gmch_pfit, which just won't work. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=74081 Tested-by: max Cc: Alan Stern Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter Signed-off-by: Jani Nikula --- Reading git-diff-tree failed