[tip: timers/core] MIPS: vdso: Define BUILD_VDSO32 when building a 32bit kernel

[tip-bot2 for Thomas Gleixner]

The following commit has been merged into the timers/core branch of tip:

Commit-ID:     99570c3da96a0f7aa11c6ad4981776f3adabf3b5
Gitweb:        https://git.kernel.org/tip/99570c3da96a0f7aa11c6ad4981776f3adabf3b5
Author:        Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate:    Thu, 16 Jan 2020 20:43:41 +01:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Thu, 16 Jan 2020 21:24:25 +01:00

MIPS: vdso: Define BUILD_VDSO32 when building a 32bit kernel

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 __vdso_clock_gettime:
arch/mips/vdso/vgettimeofday.c:17:9: error: implicit declaration of function __cvdso_clock_gettime32

arch/mips/vdso/vgettimeofday.c: In function __vdso_clock_getres:
arch/mips/vdso/vgettimeofday.c:39:9: error: implicit declaration of function __cvdso_clock_getres_time32

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>
Acked-by: Paul Burton <paulburton@xxxxxxxxxx>
Link: https://lore.kernel.org/r/87d0bjfaqa.fsf@xxxxxxxxxxxxxxxxxxxxxxx

---
 arch/mips/vdso/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile
index e059389..b2a2e03 100644
--- 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