drm/i915: Don't compare has_drrs strictly in pipe config
The commit [cfb23ed6: drm/i915: Allow fuzzy matching in pipe_config_compare, v2] relaxed the way to compare the pipe configurations, but one new comparison sneaked in there: it added the strict has_drrs value check. This causes a regression on many machines, typically HP laptops with a docking port, where the kernel spews warnings and eventually fails to set the mode properly like: [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch in has_drrs (expected 1, found 0) ------------[ cut here ]------------ WARNING: CPU: 0 PID: 79 at drivers/gpu/drm/i915/intel_display.c:12700 intel_modeset_check_state+0x5aa/0x870 [i915]() pipe state doesn't match! .... This patch just removes the check again for fixing the regression. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=104041 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92456 Bugzilla: https://bugzilla.suse.com/show_bug.cgi?id=956397 Fixes: cfb23ed6 ('drm/i915: Allow fuzzy matching in pipe_config_compare, v2') Cc: <stable@vger.kernel.org> # v4.3+ Reported-and-tested-by: NMax Lin <mlin@suse.com> Signed-off-by: NTakashi Iwai <tiwai@suse.de> Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1448461607-16868-1-git-send-email-tiwai@suse.deSigned-off-by: NJani Nikula <jani.nikula@intel.com>
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