On 2021-06-17 15:20, Dmitry Baryshkov wrote:
We already clear the IRQ status register before processing IRQs, so do
not clear the register again. Especially do not clear the IRQ status
_after_ processing the IRQ as this way we can loose the event.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Reviewed-by: Abhinav Kumar <abhinavk@xxxxxxxxxxxxxx>
---
.../gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c | 17 -----------------
1 file changed, 17 deletions(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
index 2437b0c7c073..28e9b0d448db 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_interrupts.c
@@ -120,21 +120,6 @@ static const struct dpu_intr_reg dpu_intr_set[] =
{
#define DPU_IRQ_REG(irq_idx) (irq_idx / 32)
#define DPU_IRQ_MASK(irq_idx) (BIT(irq_idx % 32))
-static void dpu_hw_intr_clear_intr_status_nolock(struct dpu_hw_intr
*intr,
- int irq_idx)
-{
- int reg_idx;
-
- if (!intr)
- return;
-
- reg_idx = DPU_IRQ_REG(irq_idx);
- DPU_REG_WRITE(&intr->hw, dpu_intr_set[reg_idx].clr_off,
DPU_IRQ_MASK(irq_idx));
-
- /* ensure register writes go through */
- wmb();
-}
-
/**
* dpu_core_irq_callback_handler - dispatch core interrupts
* @arg: private data of callback handler
@@ -203,8 +188,6 @@ irqreturn_t dpu_core_irq(struct dpu_kms *dpu_kms)
dpu_core_irq_callback_handler(dpu_kms, irq_idx);
- dpu_hw_intr_clear_intr_status_nolock(intr, irq_idx);
-
/*
* When callback finish, clear the irq_status
* with the matching mask. Once irq_status
