Commit a792197f authored by Su Hui's avatar Su Hui Committed by David S. Miller
Browse files

net: dsa: mv88e6xxx: add an error code check in mv88e6352_tai_event_work 



mv88e6xxx_tai_write() can return error code (-EOPNOTSUPP ...) if failed.
So check the value of 'ret' after calling mv88e6xxx_tai_write().

Signed-off-by: default avatarSu Hui <suhui@nfschina.com>
Reviewed-by: default avatarVladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ee3d1228

drivers/net/dsa/mv88e6xxx/ptp.c

+4 −0
Original line number Diff line number Diff line
@@ -182,6 +182,10 @@ static void mv88e6352_tai_event_work(struct work_struct *ugly) 
	mv88e6xxx_reg_lock(chip);

	err = mv88e6xxx_tai_write(chip, MV88E6XXX_TAI_EVENT_STATUS, status[0]);

	mv88e6xxx_reg_unlock(chip);

	if (err) {

		dev_err(chip->dev, "failed to write TAI status register\n");

		return;

	}



	/* This is an external timestamp */

	ev.type = PTP_CLOCK_EXTTS;