dp_catalog_ctrl_reset() will software reset DP controller. But it will not reset programmable registers to default value. DP driver still have to clear mask bits to interrupt status registers to disable interrupts after software reset of controller. This patch removes the enable flag condition checking to always clear mask bits of interrupt status registers to disable interrupts if enable flag is false. Fixes: ba0a422be723 ("drm/msm/dp: do not initialize phy until plugin interrupt received") Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx> --- drivers/gpu/drm/msm/dp/dp_ctrl.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/dp/dp_ctrl.c b/drivers/gpu/drm/msm/dp/dp_ctrl.c index 38026f2..cbf3399 100644 --- a/drivers/gpu/drm/msm/dp/dp_ctrl.c +++ b/drivers/gpu/drm/msm/dp/dp_ctrl.c @@ -1379,8 +1379,13 @@ void dp_ctrl_reset_irq_ctrl(struct dp_ctrl *dp_ctrl, bool enable) dp_catalog_ctrl_reset(ctrl->catalog); - if (enable) - dp_catalog_ctrl_enable_irq(ctrl->catalog, enable); + /* + * all dp controller programmable registers will not + * be reset to default value after DP_SW_RESET + * therefore interrupt mask bits have to be updated + * to enable/disable interrupts + */ + dp_catalog_ctrl_enable_irq(ctrl->catalog, enable); } void dp_ctrl_phy_init(struct dp_ctrl *dp_ctrl) -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project