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From: Lyude Paul <lyude@redhat.com>
To: dri-devel@lists.freedesktop.org
Cc: Sean Paul <sean@poorly.run>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/4] drm/dp_mst: Improve kdocs for drm_dp_check_act_status()
Date: Fri,  3 Apr 2020 16:07:53 -0400	[thread overview]
Message-ID: <20200403200757.886443-2-lyude@redhat.com> (raw)
In-Reply-To: <20200403200757.886443-1-lyude@redhat.com>

No functional changes.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Sean Paul <sean@poorly.run>
---
 drivers/gpu/drm/drm_dp_mst_topology.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 10d0315af513..2b9ce965f044 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -4462,10 +4462,14 @@ static int drm_dp_dpcd_write_payload(struct drm_dp_mst_topology_mgr *mgr,
 
 
 /**
- * drm_dp_check_act_status() - Check ACT handled status.
+ * drm_dp_check_act_status() - Polls for ACT handled status.
  * @mgr: manager to use
  *
- * Check the payload status bits in the DPCD for ACT handled completion.
+ * Tries waiting for the MST hub to finish updating it's payload table by
+ * polling for the ACT handled bit.
+ *
+ * Returns:
+ * 0 if the ACT was handled in time, negative error code on failure.
  */
 int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr)
 {
-- 
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 [PATCH 0/4] drm/dp_mst: drm_dp_check_act_status() fixes Lyude Paul
2020-04-03 20:07 ` Lyude Paul [this message]
2020-04-06 19:21   ` [PATCH 1/4] drm/dp_mst: Improve kdocs for drm_dp_check_act_status() 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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