Merge branch 'net-fec-a-few-improvements'

Sergey Organov says:

====================
net: fec: a few improvements

This is a collection of simple improvements that reduce and/or
simplify code. They got developed out of attempt to use DP83640 PTP
PHY connected to built-in FEC (that has its own PTP support) of the
iMX 6SX micro-controller. The primary bug-fix was now submitted
separately, and this is the rest of the changes.

NOTE: the patches are developed and tested on 4.9.146, and rebased on
top of recent 'net-next/master', where, besides visual inspection, I
only tested that they do compile.
====================

Signed-off-by: Jakub Kicinski <[e-mail]>

drivers/net/ethernet/freescale/fec_ptp.c

···
 	u64 ns;
 	val = 0;
 
-	if (!(fep->hwts_tx_en || fep->hwts_rx_en)) {
-		dev_err(&fep->pdev->dev, "No ptp stack is running\n");
-		return -EINVAL;
-	}
-
 	if (fep->pps_enable == enable)
 		return 0;
 
···
 	fep->cc.mult = FEC_CC_MULT;
 
 	/* reset the ns time counter */
-	timecounter_init(&fep->tc, &fep->cc, ktime_to_ns(ktime_get_real()));
+	timecounter_init(&fep->tc, &fep->cc, 0);
 
 	spin_unlock_irqrestore(&fep->tmreg_lock, flags);
 }
···
 
 	switch (config.rx_filter) {
 	case HWTSTAMP_FILTER_NONE:
-		if (fep->hwts_rx_en)
-			fep->hwts_rx_en = 0;
-		config.rx_filter = HWTSTAMP_FILTER_NONE;
+		fep->hwts_rx_en = 0;
 		break;
 
 	default:
···
 	int ret;
 
 	fep->ptp_caps.owner = THIS_MODULE;
-	snprintf(fep->ptp_caps.name, 16, "fec ptp");
+	strlcpy(fep->ptp_caps.name, "fec ptp", sizeof(fep->ptp_caps.name));
 
 	fep->ptp_caps.max_adj = 250000000;
 	fep->ptp_caps.n_alarm = 0;