net: fec: ptp: remove unused variable 'ns' in fec_time_keep()

Fixes the following W=1 kernel build warning(s):

drivers/net/ethernet/freescale/fec_ptp.c:523:6: warning:
 variable 'ns' set but not used [-Wunused-but-set-variable]
  523 |  u64 ns;
      |      ^~

After commit 6605b730c061 ("FEC: Add time stamping code and a PTP
hardware clock"), variable 'ns' is never used in fec_time_keep(),
so removing it to avoid build warning.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c
index a0c1f4410306c0810d7276ca5d43946c37927a14..0405a3975f3f289c9c92bb60b58414c38e42bc04 100644 (file)
--- a/drivers/net/ethernet/freescale/fec_ptp.c
+++ b/drivers/net/ethernet/freescale/fec_ptp.c
@@ -520,13 +520,12 @@ static void fec_time_keep(struct work_struct *work)
 {
        struct delayed_work *dwork = to_delayed_work(work);
        struct fec_enet_private *fep = container_of(dwork, struct fec_enet_private, time_keep);
-       u64 ns;
        unsigned long flags;
 
        mutex_lock(&fep->ptp_clk_mutex);
        if (fep->ptp_clk_on) {
                spin_lock_irqsave(&fep->tmreg_lock, flags);
-               ns = timecounter_read(&fep->tc);
+               timecounter_read(&fep->tc);
                spin_unlock_irqrestore(&fep->tmreg_lock, flags);
        }
        mutex_unlock(&fep->ptp_clk_mutex);