[PATCH 10/11] drm/msm/mdp4: disable the vdd regulator on teardown

[Dmitry Baryshkov]

mdp4_kms_init() enables the optional vdd regulator, but only its error
path disables it again: unbinding the display leaves it on, and the
regulator core warns when the devm-managed exclusive handle is released
while enabled.

Disable it again in mdp4_destroy().

Fixes: c8afe684c95c ("drm/msm: basic KMS driver for snapdragon")
Assisted-by: LLM
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
index 62a79bdfca19..8529e7b2008d 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_kms.c
@@ -137,6 +137,9 @@ static void mdp4_destroy(struct msm_kms *kms)
 	if (mdp4_kms->rpm_enabled)
 		pm_runtime_disable(dev);
 
+	if (mdp4_kms->vdd)
+		regulator_disable(mdp4_kms->vdd);
+
 	mdp_kms_destroy(&mdp4_kms->base);
 }
 

-- 
2.47.3