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35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
From d64998e5fc5894eb37f142b7259fa3bec091abbc Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Date: Thu, 24 Aug 2023 15:36:21 +0100
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Subject: [PATCH 0599/1085] drm/vc4: Fix dlist debug not resetting the next
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entry pointer
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The debug function to display the dlists didn't reset next_entry_start
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when starting each display, so resulting in not stopping the
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list at the correct place.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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---
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drivers/gpu/drm/vc4/vc4_hvs.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_hvs.c
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+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
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@@ -110,7 +110,7 @@ static int vc4_hvs_debugfs_dlist(struct
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struct vc4_dev *vc4 = to_vc4_dev(dev);
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struct vc4_hvs *hvs = vc4->hvs;
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struct drm_printer p = drm_seq_file_printer(m);
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- unsigned int next_entry_start = 0;
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+ unsigned int next_entry_start;
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unsigned int i, j;
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u32 dlist_word, dispstat;
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@@ -124,6 +124,7 @@ static int vc4_hvs_debugfs_dlist(struct
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}
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drm_printf(&p, "HVS chan %u:\n", i);
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+ next_entry_start = 0;
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for (j = HVS_READ(SCALER_DISPLISTX(i)); j < 256; j++) {
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dlist_word = readl((u32 __iomem *)vc4->hvs->dlist + j);
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