[PATCH] kvm: Return -ENODEV from update_persistent_clock

[Jason Gunthorpe <jgg@ziepe.ca>]

kvm does not support setting the RTC, so the correct result is -ENODEV.
Returning -1 will cause sync_cmos_clock to keep trying to set the RTC
every second.

Signed-off-by: Jason Gunthorpe <jgg@ziepe.ca>
---
 arch/x86/kernel/kvmclock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index d88967659098b5..5b609e28ce3f40 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -79,7 +79,7 @@ static void kvm_get_wallclock(struct timespec *now)
 
 static int kvm_set_wallclock(const struct timespec *now)
 {
-	return -1;
+	return -ENODEV;
 }
 
 static u64 kvm_clock_read(void)
-- 
2.7.4