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openmptcprouter/6.1/target/linux/bcm27xx/patches-6.1/0577-drm-vc4-hvs-Move-the-dlist-allocation-destruction-to.patch

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From 63fc438c124a1435d083d69c6d169d40ac6a7c79 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Wed, 25 Jan 2023 12:54:36 +0100
Subject: [PATCH 577/726] drm/vc4: hvs: Move the dlist allocation destruction
to a function
We'll need to destroy a dlist allocation in multiple code paths, so
let's move it to a separate function.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_hvs.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hvs.c b/drivers/gpu/drm/vc4/vc4_hvs.c
index c9c7b841385d..c39e44d53ea3 100644
--- a/drivers/gpu/drm/vc4/vc4_hvs.c
+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
@@ -466,6 +466,18 @@ vc4_hvs_alloc_dlist_entry(struct vc4_hvs *hvs,
return alloc;
}
+static void vc4_hvs_free_dlist_entry_locked(struct vc4_hvs *hvs,
+ struct vc4_hvs_dlist_allocation *alloc)
+{
+ lockdep_assert_held(&hvs->mm_lock);
+
+ if (!list_empty(&alloc->node))
+ list_del(&alloc->node);
+
+ drm_mm_remove_node(&alloc->mm_node);
+ kfree(alloc);
+}
+
void vc4_hvs_mark_dlist_entry_stale(struct vc4_hvs *hvs,
struct vc4_hvs_dlist_allocation *alloc)
{
@@ -553,9 +565,7 @@ static void vc4_hvs_dlist_free_work(struct work_struct *work)
if (!vc4_hvs_frcnt_lte(cur->target_frame_count, frcnt))
continue;
- list_del(&cur->node);
- drm_mm_remove_node(&cur->mm_node);
- kfree(cur);
+ vc4_hvs_free_dlist_entry_locked(hvs, cur);
}
spin_unlock_irqrestore(&hvs->mm_lock, flags);
}
--
2.33.1