From: Chiawen Huang chiawen.huang@amd.com
stable inclusion from stable-v5.10.112 commit 6906e05cf3ad2cfe704eda003de59aa0cb89b291 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5HL0X
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 7d56a154e22ffb3613fdebf83ec34d5225a22993 ]
[Why] disable/enable leads FEC mismatch between hw/sw FEC state.
[How] check FEC status to fastboot on/off.
Reviewed-by: Anthony Koo Anthony.Koo@amd.com Acked-by: Alex Hung alex.hung@amd.com Signed-off-by: Chiawen Huang chiawen.huang@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- drivers/gpu/drm/amd/display/dc/core/dc.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 93f5229c303e..ac5323596c65 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1173,6 +1173,10 @@ bool dc_validate_seamless_boot_timing(const struct dc *dc, if (!link->link_enc->funcs->is_dig_enabled(link->link_enc)) return false;
+ /* Check for FEC status*/ + if (link->link_enc->funcs->fec_is_active(link->link_enc)) + return false; + enc_inst = link->link_enc->funcs->get_dig_frontend(link->link_enc);
if (enc_inst == ENGINE_ID_UNKNOWN)