From: Jani Nikula <jani.nikula@intel.com>
To: dri-devel@lists.freedesktop.org
Cc: jani.nikula@intel.com, intel-gfx@lists.freedesktop.org
Subject: [PATCH 2/2] drm/mst: use DP_GET_SINK_COUNT() for sink count in ESI
Date: Tue, 4 Jan 2022 20:48:57 +0200 [thread overview]
Message-ID: <20220104184857.784563-2-jani.nikula@intel.com> (raw)
In-Reply-To: <20220104184857.784563-1-jani.nikula@intel.com>
Take bit 7 into account when reading sink count from
DP_DEVICE_SERVICE_IRQ_VECTOR_ESI0.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
drivers/gpu/drm/drm_dp_mst_topology.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index f3d79eda94bb..ab4372e9fe43 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -4196,7 +4196,7 @@ int drm_dp_mst_hpd_irq(struct drm_dp_mst_topology_mgr *mgr, u8 *esi, bool *handl
int ret = 0;
int sc;
*handled = false;
- sc = esi[0] & 0x3f;
+ sc = DP_GET_SINK_COUNT(esi[0]);
if (sc != mgr->sink_count) {
mgr->sink_count = sc;
--
2.30.2
next prev parent reply other threads:[~2022-01-04 18:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-04 18:48 [PATCH 1/2] drm/dp: note that DPCD 0x2002-0x2003 match 0x200-0x201 Jani Nikula
2022-01-04 18:48 ` Jani Nikula [this message]
2022-01-10 16:01 ` [Intel-gfx] [PATCH 2/2] drm/mst: use DP_GET_SINK_COUNT() for sink count in ESI Ville Syrjälä
2022-01-10 16:01 ` [Intel-gfx] [PATCH 1/2] drm/dp: note that DPCD 0x2002-0x2003 match 0x200-0x201 Ville Syrjälä
2022-01-11 15:51 ` Jani Nikula
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