Use %ptSp instead of open coded variants to print content of
struct timespec64 in human readable format.

Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/net/ethernet/intel/igb/igb_ptp.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c
index a7876882aeaf..bd85d02ecadd 100644
--- a/drivers/net/ethernet/intel/igb/igb_ptp.c
+++ b/drivers/net/ethernet/intel/igb/igb_ptp.c
@@ -840,14 +840,11 @@ static void igb_ptp_overflow_check(struct work_struct *work)
 	struct igb_adapter *igb =
 		container_of(work, struct igb_adapter, ptp_overflow_work.work);
 	struct timespec64 ts;
-	u64 ns;
 
 	/* Update the timecounter */
-	ns = timecounter_read(&igb->tc);
+	ts = ns_to_timespec64(timecounter_read(&igb->tc));
 
-	ts = ns_to_timespec64(ns);
-	pr_debug("igb overflow check at %lld.%09lu\n",
-		 (long long) ts.tv_sec, ts.tv_nsec);
+	pr_debug("igb overflow check at %ptSp\n", &ts);
 
 	schedule_delayed_work(&igb->ptp_overflow_work,
 			      IGB_SYSTIM_OVERFLOW_PERIOD);
-- 
2.50.1