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authorgatecat <gatecat@ds0.me>2022-06-09 20:05:20 +0100
committergatecat <gatecat@ds0.me>2022-06-09 20:05:20 +0100
commiteac864ebdcdf7cf366e0dcbd5497e3c5cce3c479 (patch)
tree268ff33262b7ca1d1aab0af55ccab985dbe20a8b /generic/archdefs.h
parentaeece7d2788ce667c5eca8b321f4043a13e53950 (diff)
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ecp5: Bind write_bitstream to Python
Signed-off-by: gatecat <gatecat@ds0.me>
Diffstat (limited to 'generic/archdefs.h')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-15 03:25:34 +0000
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From 8f22c4228bbb91697ab3510f5a6176e530c0d639 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Thu, 6 Feb 2020 12:23:15 +0000
Subject: [PATCH] of: overlay: Correct symbol path fixups

When symbols from overlays are added to the live tree their paths must
be rebased. The translated symbol is normally the result of joining
the fragment-relative path (with a leading "/") to the target path
(either copied directly from the "target-path" property or resolved
from the phandle). This translation fails when the target is the root
node (a common case for Raspberry Pi overlays) because the resulting
path starts with a double slash. For example, if target-path is "/" and
the fragment adds a node called "newnode", the label associated with
that node will be assigned the path "//newnode", which can't be found
in the tree.

Fix the failure case by explicitly replacing a target path of "/" with
an empty string.

Fixes: d1651b03c2df ("of: overlay: add overlay symbols to live device tree")

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
 drivers/of/overlay.c | 2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/of/overlay.c
+++ b/drivers/of/overlay.c
@@ -245,6 +245,8 @@ static struct property *dup_and_fixup_sy
 	if (!target_path)
 		return NULL;
 	target_path_len = strlen(target_path);
+	if (!strcmp(target_path, "/"))
+		target_path_len = 0;
 
 	new_prop = kzalloc(sizeof(*new_prop), GFP_KERNEL);
 	if (!new_prop)