From: Sung Joon Kim <[email protected]> [why & how] User interface cannot guarantee system is in idle state, so need to ensure we exit idle state before accessing any HW data.
Reviewed-by: Nicholas Kazlauskas <[email protected]> Acked-by: Aurabindo Pillai <[email protected]> Signed-off-by: Sung Joon Kim <[email protected]> --- drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c index 930fd929e93a..8c5e7f858be3 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c +++ b/drivers/gpu/drm/amd/display/dc/dce/dmub_abm.c @@ -64,11 +64,15 @@ static void dmub_abm_init_ex(struct abm *abm, uint32_t backlight) static unsigned int dmub_abm_get_current_backlight_ex(struct abm *abm) { + dc_allow_idle_optimizations(abm->ctx->dc, false); + return dmub_abm_get_current_backlight(abm); } static unsigned int dmub_abm_get_target_backlight_ex(struct abm *abm) { + dc_allow_idle_optimizations(abm->ctx->dc, false); + return dmub_abm_get_target_backlight(abm); } -- 2.39.2
