target/linux/bcm27xx/patches-5.15/950-0619-drm-vc4-hvs-Remove-dlist-setup-duplication.patch

   1 From 5fa4e656501eed725b9151a38e5b55a45571bf31 Mon Sep 17 00:00:00 2001
   2 From: Maxime Ripard <maxime@cerno.tech>
   3 Date: Mon, 6 Dec 2021 16:17:56 +0100
   4 Subject: [PATCH] drm/vc4: hvs: Remove dlist setup duplication
   5
   6 Setting the DISPLISTx register needs to occur in every case, and we
   7 don't need to protect the register using the event_lock, so we can just
   8 move it after the if branches and simplify a bit the function.
   9
  10 Signed-off-by: Maxime Ripard <maxime@cerno.tech>
  11 ---
  12  drivers/gpu/drm/vc4/vc4_hvs.c | 9 +++------
  13  1 file changed, 3 insertions(+), 6 deletions(-)
  14
  15 --- a/drivers/gpu/drm/vc4/vc4_hvs.c
  16 +++ b/drivers/gpu/drm/vc4/vc4_hvs.c
  17 @@ -616,15 +616,12 @@ static void vc4_hvs_update_dlist(struct
  18                         crtc->state->event = NULL;
  19                 }
  20
  21 -               HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
  22 -                         vc4_state->mm.start);
  23 -
  24                 spin_unlock_irqrestore(&dev->event_lock, flags);
  25 -       } else {
  26 -               HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
  27 -                         vc4_state->mm.start);
  28         }
  29
  30 +       HVS_WRITE(SCALER_DISPLISTX(vc4_state->assigned_channel),
  31 +                 vc4_state->mm.start);
  32 +
  33         spin_lock_irqsave(&vc4_crtc->irq_lock, flags);
  34         vc4_crtc->current_dlist = vc4_state->mm.start;
  35         spin_unlock_irqrestore(&vc4_crtc->irq_lock, flags);