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| author | Takashi Iwai <tiwai@suse.de> | 2015-11-25 15:26:47 +0100 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2015-11-25 16:30:45 +0100 |
| commit | 13b13dfaaa39ab52b0f433c6744f4638793cbf7b (patch) | |
| tree | d7970f3a6bcf64a964d16fae92884ed07984a5b6 /drivers/gpu | |
| parent | drm/i915: Mark uneven memory banks on gen4 desktop as unknown swizzling (diff) | |
| download | linux-13b13dfaaa39ab52b0f433c6744f4638793cbf7b.tar.xz linux-13b13dfaaa39ab52b0f433c6744f4638793cbf7b.zip | |
drm/i915: Don't compare has_drrs strictly in pipe config
The commit [cfb23ed622d0: 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: cfb23ed622d0 ('drm/i915: Allow fuzzy matching in pipe_config_compare, v2')
Cc: <stable@vger.kernel.org> # v4.3+
Reported-and-tested-by: Max Lin <mlin@suse.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1448461607-16868-1-git-send-email-tiwai@suse.de
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 71860f8680f9..12a2e9d1f633 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -12460,7 +12460,6 @@ intel_pipe_config_compare(struct drm_device *dev, if (INTEL_INFO(dev)->gen < 8) { PIPE_CONF_CHECK_M_N(dp_m_n); - PIPE_CONF_CHECK_I(has_drrs); if (current_config->has_drrs) PIPE_CONF_CHECK_M_N(dp_m2_n2); } else |