[PATCH v3 7/9] MIPS: VDSO: Respect COMPAT_32BIT_TIME

[Thomas Weißschuh]

If CONFIG_COMPAT_32BIT_TIME is disabled then the vDSO should not
provide any 32-bit time related functionality. This is the intended
effect of the kconfig option and also the fallback system calls would
also not be implemented.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh at linutronix.de>
Reviewed-by: Arnd Bergmann <arnd at arndb.de>
---
 arch/mips/vdso/vdso.lds.S      | 2 ++
 arch/mips/vdso/vgettimeofday.c | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/arch/mips/vdso/vdso.lds.S b/arch/mips/vdso/vdso.lds.S
index 278ab6444e98..b11ee493c67f 100644
--- a/arch/mips/vdso/vdso.lds.S
+++ b/arch/mips/vdso/vdso.lds.S
@@ -97,9 +97,11 @@ VERSION
 	LINUX_2.6 {
 #ifdef CONFIG_GENERIC_GETTIMEOFDAY
 	global:
+#if _MIPS_SIM == _MIPS_SIM_ABI64 || defined(CONFIG_COMPAT_32BIT_TIME)
 		__vdso_clock_gettime;
 		__vdso_gettimeofday;
 		__vdso_clock_getres;
+#endif
 #if _MIPS_SIM != _MIPS_SIM_ABI64
 		__vdso_clock_gettime64;
 		__vdso_clock_getres_time64;
diff --git a/arch/mips/vdso/vgettimeofday.c b/arch/mips/vdso/vgettimeofday.c
index 00f9fcfc327e..a1fb06b8973e 100644
--- a/arch/mips/vdso/vgettimeofday.c
+++ b/arch/mips/vdso/vgettimeofday.c
@@ -12,6 +12,8 @@
 #include <vdso/gettime.h>
 
 #if _MIPS_SIM != _MIPS_SIM_ABI64
+
+#ifdef CONFIG_COMPAT_32BIT_TIME
 int __vdso_clock_gettime(clockid_t clock,
 			 struct old_timespec32 *ts)
 {
@@ -29,6 +31,7 @@ int __vdso_clock_getres(clockid_t clock_id,
 {
 	return __cvdso_clock_getres_time32(clock_id, res);
 }
+#endif /* CONFIG_COMPAT_32BIT_TIME */
 
 int __vdso_clock_gettime64(clockid_t clock,
 			   struct __kernel_timespec *ts)

-- 
2.55.0