[PATCH] linker_lists.h: Add attribute used to ll_entry_start macro

[Aditya Kumar]

>From 39d292a327b104dcb1347afb545b2baeb7b2227e Mon Sep 17 00:00:00 2001
From: AdityaK <appujee at google.com>
Date: Tue, 21 Feb 2023 15:05:54 -0800
Subject: [PATCH] linker_lists.h: Add attribute used to ll_entry_start macro

The variable gets dropped by clang compiler in an optimized builds.
Adding attribute((used)) allows the symbol to be preserved. Similar
changes have been proposed in the past e.g.,
569524741a01e1a96fc2b75dd7e5d12e41ce6c2b for ll_entry_declare macro.

Signed-off-by: AdityaK <appujee at google.com>
---
 include/linker_lists.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linker_lists.h b/include/linker_lists.h
index d3da9d44e8..4cd13c3bc8 100644
--- a/include/linker_lists.h
+++ b/include/linker_lists.h
@@ -125,7 +125,7 @@
 #define ll_entry_start(_type, _list) \
 ({ \
  static char start[0] __aligned(CONFIG_LINKER_LIST_ALIGN) \
- __attribute__((unused)) \
+ __attribute__((unused)) __attribute__((used)) \
  __section("__u_boot_list_2_"#_list"_1"); \
  (_type *)&start; \
 })
-- 
2.39.2.637.g21b0678d19-goog