4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: James Cowgill <jcowg...@debian.org>

[ Upstream commit 57a489786de9ec37d6e25ef1305dc337047f0236 ]

Building a riscv kernel with CONFIG_FUNCTION_TRACER and
CONFIG_MODVERSIONS enabled results in these two warnings:

  MODPOST vmlinux.o
WARNING: EXPORT symbol "return_to_handler" [vmlinux] version generation failed, 
symbol will not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol 
will not be versioned.

When exporting symbols from an assembly file, the MODVERSIONS code
requires their prototypes to be defined in asm-prototypes.h (see
scripts/Makefile.build). Since both of these symbols have prototypes
defined in linux/ftrace.h, include this header from RISC-V's
asm-prototypes.h.

Reported-by: Karsten Merker <mer...@debian.org>
Signed-off-by: James Cowgill <jcowg...@debian.org>
Signed-off-by: Palmer Dabbelt <pal...@sifive.com>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 arch/riscv/include/asm/asm-prototypes.h |    7 +++++++
 1 file changed, 7 insertions(+)
 create mode 100644 arch/riscv/include/asm/asm-prototypes.h

--- /dev/null
+++ b/arch/riscv/include/asm/asm-prototypes.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_RISCV_PROTOTYPES_H
+
+#include <linux/ftrace.h>
+#include <asm-generic/asm-prototypes.h>
+
+#endif /* _ASM_RISCV_PROTOTYPES_H */


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