[PATCH 4.19 082/243] math-emu/soft-fp.h: (_FP_ROUND_ZERO) cast 0 to void to fix warning

Greg Kroah-Hartman
2019-12-11T15:53:23Z

From: Vincent Chen <vincentc@andestech.com>

[ Upstream commit 83312f1b7ae205dca647bf52bbe2d51303cdedfb ]

_FP_ROUND_ZERO is defined as 0 and used as a statemente in macro
_FP_ROUND. This generates "error: statement with no effect
[-Werror=unused-value]" from gcc. Defining _FP_ROUND_ZERO as (void)0 to
fix it.

This modification is quoted from glibc 'commit <In libc/:>
(8ed1e7d5894000c155acbd06f)'

Signed-off-by: Vincent Chen <vincentc@andestech.com>
Acked-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/math-emu/soft-fp.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/math-emu/soft-fp.h b/include/math-emu/soft-fp.h
index 3f284bc031809..5650c16283830 100644
--- a/include/math-emu/soft-fp.h
+++ b/include/math-emu/soft-fp.h
@@ -138,7 +138,7 @@ do { \
_FP_FRAC_ADDI_##wc(X, _FP_WORK_ROUND); \
} while (0)

-#define _FP_ROUND_ZERO(wc, X) 0
+#define _FP_ROUND_ZERO(wc, X) (void)0

#define _FP_ROUND_PINF(wc, X) \
do { \
--
2.20.1