target/linux/bcm27xx/patches-6.1/950-0952-drm-vc4-Fix-dlist-debug-not-resetting-the-next-entry.patch

   1 From 3660abb4a8523e988f1345985e89149804e50ebe Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 24 Aug 2023 15:36:21 +0100
   4 Subject: [PATCH] drm/vc4: Fix dlist debug not resetting the next entry pointer
   5
   6 The debug function to display the dlists didn't reset next_entry_start
   7 when starting each display, so resulting in not stopping the
   8 list at the correct place.
   9
  10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  11 ---
  12  drivers/gpu/drm/vc4/vc4_hvs.c | 3 ++-
  13  1 file changed, 2 insertions(+), 1 deletion(-)
  14
  15 --- a/drivers/gpu/drm/vc4/vc4_hvs.c
  16 +++ b/drivers/gpu/drm/vc4/vc4_hvs.c
  17 @@ -110,7 +110,7 @@ static int vc4_hvs_debugfs_dlist(struct
  18         struct vc4_dev *vc4 = to_vc4_dev(dev);
  19         struct vc4_hvs *hvs = vc4->hvs;
  20         struct drm_printer p = drm_seq_file_printer(m);
  21 -       unsigned int next_entry_start = 0;
  22 +       unsigned int next_entry_start;
  23         unsigned int i, j;
  24         u32 dlist_word, dispstat;
  25
  26 @@ -124,6 +124,7 @@ static int vc4_hvs_debugfs_dlist(struct
  27                 }
  28
  29                 drm_printf(&p, "HVS chan %u:\n", i);
  30 +               next_entry_start = 0;
  31
  32                 for (j = HVS_READ(SCALER_DISPLISTX(i)); j < 256; j++) {
  33                         dlist_word = readl((u32 __iomem *)vc4->hvs->dlist + j);