linux-kernel - [PATCH 4.1 16/84] drm/dp-mst: Remove debug WARN

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Message-Id: <20150814174210.701607001@linuxfoundation.org>
Date:	Fri, 14 Aug 2015 10:41:44 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dave Airlie <airlied@...il.com>,
	Thierry Reding <treding@...dia.com>,
	Ander Conselvan de Oliveira <conselvan2@...il.com>,
	Daniel Vetter <daniel.vetter@...el.com>
Subject: [PATCH 4.1 16/84] drm/dp-mst: Remove debug WARN_ON

4.1-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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/drm_dp_mst_topology.c |    1 -
 1 file changed, 1 deletion(-)

--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1294,7 +1294,6 @@ retry:
 				goto retry;
 			}
 			DRM_DEBUG_KMS("failed to dpcd write %d %d\n", tosend, ret);
-			WARN(1, "fail\n");
 
 			return -EIO;
 		}


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