[PATCH AUTOSEL 5.2 026/171] drm/amd/display: Disable ABM before destroy ABM struct

Sasha Levin sashal at kernel.org
Fri Jul 19 03:54:17 UTC 2019

From: Paul Hsieh <paul.hsieh at amd.com>

[ Upstream commit 1090d58d4815b1fcd95a80987391006c86398b4c ]

When disable driver, OS will set backlight optimization
then do stop device.  But this flag will cause driver to
enable ABM when driver disabled.

Send ABM disable command before destroy ABM construct

Signed-off-by: Paul Hsieh <paul.hsieh at amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo at amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
 drivers/gpu/drm/amd/display/dc/dce/dce_abm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c
index da96229db53a..2959c3c9390b 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_abm.c
@@ -473,6 +473,8 @@ void dce_abm_destroy(struct abm **abm)
 	struct dce_abm *abm_dce = TO_DCE_ABM(*abm);
+	abm_dce->base.funcs->set_abm_immediate_disable(*abm);
 	*abm = NULL;

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