1 files changed, 0 insertions, 74 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0268-drm-vc4-Prevent-load-tracking-from-breaking-FKMS.patch b/target/linux/bcm27xx/patches-5.4/950-0268-drm-vc4-Prevent-load-tracking-from-breaking-FKMS.patch
deleted file mode 100644
index e4f178d0a2..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0268-drm-vc4-Prevent-load-tracking-from-breaking-FKMS.patch
+++ /dev/null
@@ -1,74 +0,0 @@
-From 907dc84e0c7208b79ad57e0e2a7964dbc9155f50 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Thu, 15 Aug 2019 08:39:08 +0100
-Subject: [PATCH] drm/vc4: Prevent load tracking from breaking FKMS
-
-Firmware KMS uses a mixture of VC4 processing and dedicated code. The
-load tracking support in VC4 assumes it is dealing with vc4_plane_state
-objects when up-casting with container_of, but FKMS uses unadorned
-drm_plane_state structures causing the VC4 code to read off the end
-into random portions of memory. Work around the problem in a minimally-
-invasive way by over-allocating the FKMS plane state structures to be
-large enough to contain a vc4_plane_state, filling the remainder with
-zeroes.
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- drivers/gpu/drm/vc4/vc4_firmware_kms.c | 34 ++++++++++++++++++++++++--
- 1 file changed, 32 insertions(+), 2 deletions(-)
-
---- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
-+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
-@@ -561,6 +561,20 @@ static int vc4_plane_atomic_check(struct
- 	return 0;
- }
- 
-+/* Called during init to allocate the plane's atomic state. */
-+static void vc4_plane_reset(struct drm_plane *plane)
-+{
-+	struct vc4_plane_state *vc4_state;
-+
-+	WARN_ON(plane->state);
-+
-+	vc4_state = kzalloc(sizeof(*vc4_state), GFP_KERNEL);
-+	if (!vc4_state)
-+		return;
-+
-+	__drm_atomic_helper_plane_reset(plane, &vc4_state->base);
-+}
-+
- static void vc4_plane_destroy(struct drm_plane *plane)
- {
- 	drm_plane_cleanup(plane);
-@@ -602,13 +616,29 @@ static bool vc4_fkms_format_mod_supporte
- 	}
- }
- 
-+static struct drm_plane_state *vc4_plane_duplicate_state(struct drm_plane *plane)
-+{
-+	struct vc4_plane_state *vc4_state;
-+
-+	if (WARN_ON(!plane->state))
-+		return NULL;
-+
-+	vc4_state = kzalloc(sizeof(*vc4_state), GFP_KERNEL);
-+	if (!vc4_state)
-+		return NULL;
-+
-+	__drm_atomic_helper_plane_duplicate_state(plane, &vc4_state->base);
-+
-+	return &vc4_state->base;
-+}
-+
- static const struct drm_plane_funcs vc4_plane_funcs = {
- 	.update_plane = drm_atomic_helper_update_plane,
- 	.disable_plane = drm_atomic_helper_disable_plane,
- 	.destroy = vc4_plane_destroy,
- 	.set_property = NULL,
--	.reset = drm_atomic_helper_plane_reset,
--	.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
-+	.reset = vc4_plane_reset,
-+	.atomic_duplicate_state = vc4_plane_duplicate_state,
- 	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
- 	.format_mod_supported = vc4_fkms_format_mod_supported,
- };