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drm/amd/display: Check if set_blank_data_double_buffer exists before call 

Not all ASIC types have this function implemented - check before
calling.

Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Reviewed-by: Julian Parkin <jparkin@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Vitaly Prosyak 2019-07-19 16:07:33 -05:00 committed by Alex Deucher
parent 92a3701c43
commit 90830e840e
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
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@ -721,7 +721,8 @@ static void false_optc_underflow_wa(
dc->hwss.wait_for_mpcc_disconnect(dc, dc->res_pool, old_pipe_ctx);
}
tg->funcs->set_blank_data_double_buffer(tg, true);
if (tg->funcs->set_blank_data_double_buffer)
tg->funcs->set_blank_data_double_buffer(tg, true);
if (tg->funcs->is_optc_underflow_occurred(tg) && !underflow)
tg->funcs->clear_optc_underflow(tg);