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* [PATCH] drm/i915: Tune down WARN about incorrect VBT TC legacy flag
@ 2019-05-02 10:17 Imre Deak
  2019-05-02 12:09 ` Jani Nikula
                   ` (2 more replies)
  0 siblings, 3 replies; 7+ messages in thread
From: Imre Deak @ 2019-05-02 10:17 UTC (permalink / raw)
  To: intel-gfx; +Cc: Jani Nikula

Looks like VBT contains again the wrong information about a port's TypeC
legacy vs. DP-alt/TBT-alt type. There is no further issues after we
notice this and fix it up, so tune down the WARN to be a a DRM_ERROR.

This also avoids CI tainting the kernel and stopping the test run.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110578
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 4e7b8d29d733..07fa2670a677 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5230,9 +5230,12 @@ static bool icl_tc_port_connected(struct drm_i915_private *dev_priv,
 	 * WARN if we got a legacy port HPD, but VBT didn't mark the port as
 	 * legacy. Treat the port as legacy from now on.
 	 */
-	if (WARN_ON(!intel_dig_port->tc_legacy_port &&
-		    I915_READ(SDEISR) & SDE_TC_HOTPLUG_ICP(tc_port)))
+	if (!intel_dig_port->tc_legacy_port &&
+	    I915_READ(SDEISR) & SDE_TC_HOTPLUG_ICP(tc_port)) {
+		DRM_ERROR("VBT incorrectly claims port %c is not TypeC legacy\n",
+			  port_name(port));
 		intel_dig_port->tc_legacy_port = true;
+	}
 	is_legacy = intel_dig_port->tc_legacy_port;
 
 	/*
-- 
2.17.1

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^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2019-05-03 13:08 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2019-05-02 10:17 [PATCH] drm/i915: Tune down WARN about incorrect VBT TC legacy flag Imre Deak
2019-05-02 12:09 ` Jani Nikula
2019-05-03 12:35   ` Daniel Vetter
2019-05-03 13:08     ` Imre Deak
2019-05-02 14:11 ` ✓ Fi.CI.BAT: success for " Patchwork
2019-05-02 16:57 ` ✓ Fi.CI.IGT: " Patchwork
2019-05-02 20:05   ` Imre Deak

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