linux-kernel - [PATCH 3.19.y-ckt 043/102] drm/dp-mst: Remove debug WARN

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Message-Id: <1442944358-1248-44-git-send-email-kamal@canonical.com>
Date:	Tue, 22 Sep 2015 10:51:39 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Dave Airlie <airlied@...il.com>,
	Daniel Vetter <daniel.vetter@...el.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 043/102] drm/dp-mst: Remove debug WARN_ON

3.19.8-ckt7 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Daniel Vetter <daniel.vetter@...ll.ch>

commit 42639ba554655c280ae6cb72df0522b1201f2961 upstream.

Apparently been in there since forever and fairly easy to hit when
hotplugging really fast. I can do that since my mst hub has a manual
button to flick the hpd line for reprobing. The resulting WARNING spam
isn't pretty.

Cc: Dave Airlie <airlied@...il.com>
Reviewed-by: Thierry Reding <treding@...dia.com>
Reviewed-by: Ander Conselvan de Oliveira <conselvan2@...il.com>
Signed-off-by: Daniel Vetter <daniel.vetter@...el.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/gpu/drm/drm_dp_mst_topology.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 30308ab..8239563 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1290,7 +1290,6 @@ retry:
 				goto retry;
 			}
 			DRM_DEBUG_KMS("failed to dpcd write %d %d\n", tosend, ret);
-			WARN(1, "fail\n");
 
 			return -EIO;
 		}
-- 
1.9.1

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