[PATCH net-next] ptp_kvm: Make kvm_ptp_lock static

[YueHaibing]

Fix sparse warning:

drivers/ptp/ptp_kvm.c:25:1: warning:
 symbol 'kvm_ptp_lock' was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
---
 drivers/ptp/ptp_kvm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ptp/ptp_kvm.c b/drivers/ptp/ptp_kvm.c
index fc7d0b77e118..658d33fc3195 100644
--- a/drivers/ptp/ptp_kvm.c
+++ b/drivers/ptp/ptp_kvm.c
@@ -22,7 +22,7 @@ struct kvm_ptp_clock {
 	struct ptp_clock_info caps;
 };
 
-DEFINE_SPINLOCK(kvm_ptp_lock);
+static DEFINE_SPINLOCK(kvm_ptp_lock);
 
 static struct pvclock_vsyscall_time_info *hv_clock;
 
-- 
2.17.1