[PATCH] MIPS: vdso: Define BUILD_VDSO32 when building a 32bit kernel

[Thomas Gleixner]

The confinement of the 32bit specific VDSO functions missed to define
BUILD_VDSO32 when building a 32bit MIPS kernel:

arch/mips/vdso/vgettimeofday.c: In function â__vdso_clock_gettimeâ:
arch/mips/vdso/vgettimeofday.c:17:9: error: implicit declaration of function â__cvdso_clock_gettime32â

arch/mips/vdso/vgettimeofday.c: In function â__vdso_clock_getresâ:
arch/mips/vdso/vgettimeofday.c:39:9: error: implicit declaration of function â__cvdso_clock_getres_time32â

Force the define for 32bit builds in the VDSO Makefile.

Fixes: bf279849ad59 ("lib/vdso: Build 32 bit specific functions in the right context")
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/mips/vdso/Makefile |    4 ++++
 1 file changed, 4 insertions(+)

--- a/arch/mips/vdso/Makefile
+++ b/arch/mips/vdso/Makefile
@@ -18,6 +18,10 @@ ccflags-vdso := \
 	$(filter -mno-loongson-%,$(KBUILD_CFLAGS)) \
 	-D__VDSO__
 
+ifndef CONFIG_64BIT
+ccflags-vdso += -DBUILD_VDSO32
+endif
+
 ifdef CONFIG_CC_IS_CLANG
 ccflags-vdso += $(filter --target=%,$(KBUILD_CFLAGS))
 endif