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From: Lyude Paul <lyude@redhat.com>
To: dri-devel@lists.freedesktop.org
Cc: "Daniel Vetter" <daniel@ffwll.ch>,
	"David Airlie" <airlied@linux.ie>,
	"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
	linux-kernel@vger.kernel.org,
	"Thomas Zimmermann" <tzimmermann@suse.de>,
	"Maxime Ripard" <mripard@kernel.org>,
	"Dave Airlie" <airlied@redhat.com>,
	"Todd Previte" <tprevite@gmail.com>
Subject: [PATCH 0/4] drm/dp_mst: drm_dp_check_act_status() fixes
Date: Fri,  3 Apr 2020 16:07:52 -0400	[thread overview]
Message-ID: <20200403200757.886443-1-lyude@redhat.com> (raw)

Noticed this while fixing some unrelated issues with NAKs being dropped
- we don't wait nearly long enough to receive ACTs from MST hubs in some
situations. Also, we take the time to refactor this function a bit.

This fixes some ACT timeouts I observed on an EVGA MST hub with i915.

Lyude Paul (4):
  drm/dp_mst: Improve kdocs for drm_dp_check_act_status()
  drm/dp_mst: Reformat drm_dp_check_act_status() a bit
  drm/dp_mst: Increase ACT retry timeout to 3s
  drm/dp_mst: Print errors on ACT timeouts

 drivers/gpu/drm/drm_dp_mst_topology.c | 50 ++++++++++++++++++---------
 1 file changed, 34 insertions(+), 16 deletions(-)

-- 
2.25.1


             reply	other threads:[~2020-04-03 20:08 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-03 20:07 Lyude Paul [this message]
2020-04-03 20:07 ` [PATCH 1/4] drm/dp_mst: Improve kdocs for drm_dp_check_act_status() Lyude Paul
2020-04-06 19:21   ` Sean Paul
2020-04-03 20:07 ` [PATCH 2/4] drm/dp_mst: Reformat drm_dp_check_act_status() a bit Lyude Paul
2020-04-06 19:23   ` Sean Paul
2020-04-06 19:27     ` Lyude Paul
2020-04-06 22:11     ` Lyude Paul
2020-04-03 20:07 ` [PATCH 3/4] drm/dp_mst: Increase ACT retry timeout to 3s Lyude Paul
2020-04-06 19:41   ` Sean Paul
2020-04-06 19:43     ` Lyude Paul
2020-04-06 19:48       ` Sean Paul
2020-04-03 20:07 ` [PATCH 4/4] drm/dp_mst: Print errors on ACT timeouts Lyude Paul
2020-04-06 19:43   ` Sean Paul

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