diff options
Diffstat (limited to 'common/recipes-kernel/linux/files/0593-drm-amd-dal-do-not-use-MST-sink-for-regular-connecto.patch')
| -rw-r--r-- | common/recipes-kernel/linux/files/0593-drm-amd-dal-do-not-use-MST-sink-for-regular-connecto.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/files/0593-drm-amd-dal-do-not-use-MST-sink-for-regular-connecto.patch b/common/recipes-kernel/linux/files/0593-drm-amd-dal-do-not-use-MST-sink-for-regular-connecto.patch new file mode 100644 index 00000000..40596ee6 --- /dev/null +++ b/common/recipes-kernel/linux/files/0593-drm-amd-dal-do-not-use-MST-sink-for-regular-connecto.patch @@ -0,0 +1,42 @@ +From d4a92b1b70422f7a67d28503d7beb3ed5fce9a7e Mon Sep 17 00:00:00 2001 +From: Mykola Lysenko <Mykola.Lysenko@amd.com> +Date: Wed, 9 Dec 2015 19:34:30 +0800 +Subject: [PATCH 0593/1110] drm/amd/dal: do not use MST sink for regular + connector + +This fix is intention to block set mode on non-MST when +MST branch was disconnected. It is temporary, proper fix +based on sink refcounts will be applied + +Signed-off-by: Harry Wentland <harry.wentland@amd.com> +Acked-by: Harry Wentland<harry.wentland@amd.com> +--- + drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm.c | 8 ++++++++ + 1 file changed, 8 insertions(+) + +diff --git a/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm.c +index 9bb8165..e68598f 100644 +--- a/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm.c ++++ b/drivers/gpu/drm/amd/dal/amdgpu_dm/amdgpu_dm.c +@@ -736,10 +736,18 @@ void amdgpu_dm_update_connector_after_detect( + /* MST handled by drm_mst framework */ + if (aconnector->mst_mgr.mst_state) + return; ++ + if (!dm_get_sink_from_link(dc_link, aconnector, &sink)) { + return; + } + ++ /* ++ * TODO: temporary guard to look for proper fix ++ * if this sink is MST sink, we should not do anything ++ */ ++ if (sink && sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT_MST) ++ return; ++ + if (aconnector->dc_sink == sink) { + /* We got a DP short pulse (Link Loss, DP CTS, etc...). + * Do nothing!! */ +-- +2.7.4 + |