From 8bc14183988849e99046595785ceadbe0b88f7a7 Mon Sep 17 00:00:00 2001 From: Robin Chen Date: Thu, 8 Sep 2022 21:42:10 +0800 Subject: [PATCH] drm/amd/display: Revise Sink device string ID [Why] The Sink device string ID1/ID2 use 5 bytes instead of 6 bytes, so the driver should compare the first 5 bytes only. Reviewed-by: Anthony Koo Acked-by: Wayne Lin Signed-off-by: Robin Chen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c | 7 ++++--- drivers/gpu/drm/amd/display/include/ddc_service_types.h | 4 ++-- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c index 0df06740ec39..bec5e9f787fc 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_psr.c @@ -393,17 +393,18 @@ static bool dmub_psr_copy_settings(struct dmub_psr *dmub, if (copy_settings_data->dsc_enable_status && link->dpcd_caps.sink_dev_id == DP_DEVICE_ID_38EC11 && !memcmp(link->dpcd_caps.sink_dev_id_str, DP_SINK_DEVICE_STR_ID_1, - sizeof(link->dpcd_caps.sink_dev_id_str))) + sizeof(DP_SINK_DEVICE_STR_ID_1))) link->psr_settings.force_ffu_mode = 1; else link->psr_settings.force_ffu_mode = 0; copy_settings_data->force_ffu_mode = link->psr_settings.force_ffu_mode; if (link->fec_state == dc_link_fec_enabled && + link->dpcd_caps.sink_dev_id == DP_DEVICE_ID_38EC11 && (!memcmp(link->dpcd_caps.sink_dev_id_str, DP_SINK_DEVICE_STR_ID_1, - sizeof(link->dpcd_caps.sink_dev_id_str)) || + sizeof(DP_SINK_DEVICE_STR_ID_1)) || !memcmp(link->dpcd_caps.sink_dev_id_str, DP_SINK_DEVICE_STR_ID_2, - sizeof(link->dpcd_caps.sink_dev_id_str)))) + sizeof(DP_SINK_DEVICE_STR_ID_2)))) copy_settings_data->debug.bitfields.force_wakeup_by_tps3 = 1; else copy_settings_data->debug.bitfields.force_wakeup_by_tps3 = 0; diff --git a/drivers/gpu/drm/amd/display/include/ddc_service_types.h b/drivers/gpu/drm/amd/display/include/ddc_service_types.h index 05096c644a60..a7ba5bd8dc16 100644 --- a/drivers/gpu/drm/amd/display/include/ddc_service_types.h +++ b/drivers/gpu/drm/amd/display/include/ddc_service_types.h @@ -128,8 +128,8 @@ struct av_sync_data { uint8_t aud_del_ins3;/* DPCD 0002Dh */ }; -static const uint8_t DP_SINK_DEVICE_STR_ID_1[] = {7, 1, 8, 7, 3, 0}; -static const uint8_t DP_SINK_DEVICE_STR_ID_2[] = {7, 1, 8, 7, 5, 0}; +static const uint8_t DP_SINK_DEVICE_STR_ID_1[] = {7, 1, 8, 7, 3}; +static const uint8_t DP_SINK_DEVICE_STR_ID_2[] = {7, 1, 8, 7, 5}; static const u8 DP_SINK_BRANCH_DEV_NAME_7580[] = "7580\x80u"; -- 2.39.5