[PATCH u-boot v4 23/36] ARM: fix LTO for imx28_xea

[Marek Behún]

When imx28_xea_defconfig is built with LTO, the compiler complains about
the two different declarations of _start:
   include/asm-generic/sections.h    as  extern void _start(void);
   arch/arm/cpu/arm926ejs/mxs/mxs.c  as  extern uint32_t _start;

Fix this.

Signed-off-by: Marek Behún <marek.behun at nic.cz>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---
 arch/arm/cpu/arm926ejs/mxs/mxs.c      | 2 +-
 arch/arm/cpu/arm926ejs/mxs/spl_boot.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/arm926ejs/mxs/mxs.c b/arch/arm/cpu/arm926ejs/mxs/mxs.c
index 344b9b4e55..4d21e3df76 100644
--- a/arch/arm/cpu/arm926ejs/mxs/mxs.c
+++ b/arch/arm/cpu/arm926ejs/mxs/mxs.c
@@ -25,6 +25,7 @@
 #include <asm/arch/iomux.h>
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/sys_proto.h>
+#include <asm/sections.h>
 #include <linux/compiler.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -98,7 +99,6 @@ int arch_cpu_init(void)
 {
 	struct mxs_clkctrl_regs *clkctrl_regs =
 		(struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
-	extern uint32_t _start;
 
 	mx28_fixup_vt((uint32_t)&_start);
 
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
index 66406cc857..0a8985b90a 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_boot.c
@@ -16,6 +16,7 @@
 #include <asm/arch/imx-regs.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/gpio.h>
+#include <asm/sections.h>
 #include <linux/compiler.h>
 
 #include "mxs_init.h"
@@ -100,7 +101,6 @@ static void mxs_spl_fixup_vectors(void)
 	 * thus this fixup. Our vectoring table is PIC, so copying is
 	 * fine.
 	 */
-	extern uint32_t _start;
 
 	/* cppcheck-suppress nullPointer */
 	memcpy(0x0, &_start, 0x60);
-- 
2.26.3