From: Xiaogang.Chen <xiaogang.chen@amd.com> To: <amd-gfx@lists.freedesktop.org>, <harry.wentland@amd.com>, <dri-devel@lists.freedesktop.org>, <airlied@linux.ie> Cc: xiaogang.chen@amd.com Subject: [PATCH 1/2] drm: distinguish return value of drm_dp_check_and_send_link_address. Date: Mon, 4 Jan 2021 00:01:37 -0600 [thread overview] Message-ID: <1609740098-32603-1-git-send-email-xiaogang.chen@amd.com> (raw) From: Xiaogang Chen <xiaogang.chen@amd.com> drm_dp_check_and_send_link_address discovers MST device topology. It can return both positive and negative values. When it returns positive values there is no error found. If it returns negative values there is error found, such as get NAK , timeout, etc. Following drm_kms_helper_hotplug_event should be called when drm_dp_check_and_send_link_address returns positive value. Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.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 17dbed0..3ef5206 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2650,7 +2650,7 @@ static void drm_dp_mst_link_probe_work(struct work_struct *work) drm_dp_mst_topology_put_mstb(mstb); mutex_unlock(&mgr->probe_lock); - if (ret) + if (ret > 0) drm_kms_helper_hotplug_event(dev); } -- 2.7.4 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: Xiaogang.Chen <xiaogang.chen@amd.com> To: <amd-gfx@lists.freedesktop.org>, <harry.wentland@amd.com>, <dri-devel@lists.freedesktop.org>, <airlied@linux.ie> Cc: xiaogang.chen@amd.com Subject: [PATCH 1/2] drm: distinguish return value of drm_dp_check_and_send_link_address. Date: Mon, 4 Jan 2021 00:01:37 -0600 [thread overview] Message-ID: <1609740098-32603-1-git-send-email-xiaogang.chen@amd.com> (raw) From: Xiaogang Chen <xiaogang.chen@amd.com> drm_dp_check_and_send_link_address discovers MST device topology. It can return both positive and negative values. When it returns positive values there is no error found. If it returns negative values there is error found, such as get NAK , timeout, etc. Following drm_kms_helper_hotplug_event should be called when drm_dp_check_and_send_link_address returns positive value. Signed-off-by: Xiaogang Chen <xiaogang.chen@amd.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 17dbed0..3ef5206 100644 --- a/drivers/gpu/drm/drm_dp_mst_topology.c +++ b/drivers/gpu/drm/drm_dp_mst_topology.c @@ -2650,7 +2650,7 @@ static void drm_dp_mst_link_probe_work(struct work_struct *work) drm_dp_mst_topology_put_mstb(mstb); mutex_unlock(&mgr->probe_lock); - if (ret) + if (ret > 0) drm_kms_helper_hotplug_event(dev); } -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
next reply other threads:[~2021-01-04 6:02 UTC|newest] Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-04 6:01 Xiaogang.Chen [this message] 2021-01-04 6:01 ` [PATCH 1/2] drm: distinguish return value of drm_dp_check_and_send_link_address Xiaogang.Chen 2021-01-04 6:01 ` [PATCH 2/2] drm/amdgpu/display: buffer INTERRUPT_LOW_IRQ_CONTEXT interrupt work Xiaogang.Chen 2021-01-04 6:01 ` Xiaogang.Chen 2021-01-12 6:37 ` Chen, Xiaogang 2021-01-12 6:37 ` Chen, Xiaogang 2021-01-13 0:54 ` Chen, Xiaogang 2021-01-13 4:54 ` Andrey Grodzovsky 2021-01-13 4:54 ` Andrey Grodzovsky 2021-01-14 5:11 ` Chen, Xiaogang 2021-01-14 5:11 ` Chen, Xiaogang 2021-01-14 7:24 ` Andrey Grodzovsky 2021-01-14 7:24 ` Andrey Grodzovsky 2021-01-15 7:21 ` Chen, Xiaogang 2021-01-15 7:21 ` Chen, Xiaogang 2021-01-19 22:29 ` Andrey Grodzovsky 2021-01-19 22:29 ` Andrey Grodzovsky 2021-01-22 20:55 ` Chen, Xiaogang 2021-01-22 20:55 ` Chen, Xiaogang 2021-02-26 22:52 ` Aurabindo Pillai 2021-02-26 22:52 ` Aurabindo Pillai 2021-01-12 6:36 ` [PATCH 1/2] drm: distinguish return value of drm_dp_check_and_send_link_address Chen, Xiaogang 2021-01-12 6:36 ` Chen, Xiaogang 2021-01-12 9:21 ` Simon Ser 2021-01-12 9:21 ` Simon Ser 2021-01-12 14:45 ` Simon Ser 2021-01-12 14:45 ` Simon Ser
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