MIPS: Fix wrong CHECKFLAGS (sparse builds) with GCC 5.1

GCC 5.1 defines __REGISTER_PREFIX__ to $. This will break sparse
command line (and build fails with: /bin/sh: syntax error:
unexpected "(") since make tries to expand starting with the dollar
sign with a make variable. Prevent that by using double dollar sign.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10025/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 5200f649dd4e..ae2dd59050f7 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -277,7 +277,7 @@ LDFLAGS			+= -m $(ld-emul)
 ifdef CONFIG_MIPS
 CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
         egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
-        sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
+        sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/" -e 's/\$$/&&/g')
 ifdef CONFIG_64BIT
 CHECKFLAGS              += -m64
 endif