* [PATCH v1] drm/amd/dc: Fix a missing check bug in dm_dp_mst_detect()
@ 2021-04-09 0:57 wangyingjie55
2021-04-23 18:40 ` Alex Deucher
0 siblings, 1 reply; 2+ messages in thread
From: wangyingjie55 @ 2021-04-09 0:57 UTC (permalink / raw)
To: harry.wentland, sunpeng.li, alexander.deucher, christian.koenig,
airlied, daniel, mikita.lipski, eryk.brol, aurabindo.pillai,
Wayne.Lin, luben.tuikov
Cc: dri-devel, wangyingjie55, amd-gfx, linux-kernel
From: Yingjie Wang <wangyingjie55@126.com>
In dm_dp_mst_detect(), We should check whether or not @connector
has been unregistered from userspace. If the connector is unregistered,
we should return disconnected status.
Fixes: 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)")
Signed-off-by: Yingjie Wang <wangyingjie55@126.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 8ab0b9060d2b..103dfd0e9b65 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -271,6 +271,9 @@ dm_dp_mst_detect(struct drm_connector *connector,
struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
struct amdgpu_dm_connector *master = aconnector->mst_port;
+ if (drm_connector_is_unregistered(connector))
+ return connector_status_disconnected;
+
return drm_dp_mst_detect_port(connector, ctx, &master->mst_mgr,
aconnector->port);
}
--
2.7.4
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v1] drm/amd/dc: Fix a missing check bug in dm_dp_mst_detect()
2021-04-09 0:57 [PATCH v1] drm/amd/dc: Fix a missing check bug in dm_dp_mst_detect() wangyingjie55
@ 2021-04-23 18:40 ` Alex Deucher
0 siblings, 0 replies; 2+ messages in thread
From: Alex Deucher @ 2021-04-23 18:40 UTC (permalink / raw)
To: wangyingjie55
Cc: Tuikov, Luben, Eryk Brol, Leo (Sunpeng) Li, LKML,
Maling list - DRI developers, Dave Airlie, Aurabindo Pillai,
amd-gfx list, Wayne Lin, Deucher, Alexander, Lipski, Mikita,
Christian Koenig
Applied. Thanks!
Alex
On Thu, Apr 8, 2021 at 9:01 PM <wangyingjie55@126.com> wrote:
>
> From: Yingjie Wang <wangyingjie55@126.com>
>
> In dm_dp_mst_detect(), We should check whether or not @connector
> has been unregistered from userspace. If the connector is unregistered,
> we should return disconnected status.
>
> Fixes: 4562236b3bc0 ("drm/amd/dc: Add dc display driver (v2)")
> Signed-off-by: Yingjie Wang <wangyingjie55@126.com>
> ---
> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> index 8ab0b9060d2b..103dfd0e9b65 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
> @@ -271,6 +271,9 @@ dm_dp_mst_detect(struct drm_connector *connector,
> struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
> struct amdgpu_dm_connector *master = aconnector->mst_port;
>
> + if (drm_connector_is_unregistered(connector))
> + return connector_status_disconnected;
> +
> return drm_dp_mst_detect_port(connector, ctx, &master->mst_mgr,
> aconnector->port);
> }
> --
> 2.7.4
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
_______________________________________________
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dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
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