diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/5049-drm-amd-display-Add-NULL-check-for-enabling-dp-ss.patch')
| -rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/5049-drm-amd-display-Add-NULL-check-for-enabling-dp-ss.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/5049-drm-amd-display-Add-NULL-check-for-enabling-dp-ss.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/5049-drm-amd-display-Add-NULL-check-for-enabling-dp-ss.patch new file mode 100644 index 00000000..5364d941 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/5049-drm-amd-display-Add-NULL-check-for-enabling-dp-ss.patch @@ -0,0 +1,41 @@ +From ae6eac5a2e26cc7cf02a4e00c7e7917bccd0c8a2 Mon Sep 17 00:00:00 2001 +From: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> +Date: Mon, 30 Jul 2018 12:27:23 -0400 +Subject: [PATCH 5049/5725] drm/amd/display: Add NULL check for enabling dp ss + +[Why] + +The pointer for integrated_info can be NULL which causes the system to +do a null pointer deference and hang on boot. + +[How] + +Add a check to ensure that integrated_info is not null before enabling +DP ss. + +Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> +Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +Signed-off-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/display/dc/core/dc_link.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +index 574c041..c3ca109 100644 +--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c ++++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c +@@ -1038,7 +1038,9 @@ static bool construct( + link->link_index = init_params->link_index; + + link->link_id = bios->funcs->get_connector_id(bios, init_params->connector_index); +- link->dp_ss_off = !!dc_ctx->dc_bios->integrated_info->dp_ss_control;; ++ ++ if (dc_ctx->dc_bios->integrated_info) ++ link->dp_ss_off = !!dc_ctx->dc_bios->integrated_info->dp_ss_control; + + if (link->link_id.type != OBJECT_TYPE_CONNECTOR) { + dm_error("%s: Invalid Connector ObjectID from Adapter Service for connector index:%d! type %d expected %d\n", +-- +2.7.4 + |