3 files changed, 17 insertions, 42 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index df6a68ab747e..6d256dbcb77d 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -6737,6 +6737,7 @@ static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 {
 	struct rtnl_link_stats64 *net_stats, *stats_prev;
 	struct rtnl_link_stats64 *vsi_stats;
+	struct ice_pf *pf = vsi->back;
 	u64 pkts, bytes;
 	int i;
 
@@ -6782,21 +6783,18 @@ static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 	net_stats = &vsi->net_stats;
 	stats_prev = &vsi->net_stats_prev;
 
-	/* clear prev counters after reset */
-	if (vsi_stats->tx_packets < stats_prev->tx_packets ||
-	    vsi_stats->rx_packets < stats_prev->rx_packets) {
-		stats_prev->tx_packets = 0;
-		stats_prev->tx_bytes = 0;
-		stats_prev->rx_packets = 0;
-		stats_prev->rx_bytes = 0;
+	/* Update netdev counters, but keep in mind that values could start at
+	 * random value after PF reset. And as we increase the reported stat by
+	 * diff of Prev-Cur, we need to be sure that Prev is valid. If it's not,
+	 * let's skip this round.
+	 */
+	if (likely(pf->stat_prev_loaded)) {
+		net_stats->tx_packets += vsi_stats->tx_packets - stats_prev->tx_packets;
+		net_stats->tx_bytes += vsi_stats->tx_bytes - stats_prev->tx_bytes;
+		net_stats->rx_packets += vsi_stats->rx_packets - stats_prev->rx_packets;
+		net_stats->rx_bytes += vsi_stats->rx_bytes - stats_prev->rx_bytes;
 	}
 
-	/* update netdev counters */
-	net_stats->tx_packets += vsi_stats->tx_packets - stats_prev->tx_packets;
-	net_stats->tx_bytes += vsi_stats->tx_bytes - stats_prev->tx_bytes;
-	net_stats->rx_packets += vsi_stats->rx_packets - stats_prev->rx_packets;
-	net_stats->rx_bytes += vsi_stats->rx_bytes - stats_prev->rx_bytes;
-
 	stats_prev->tx_packets = vsi_stats->tx_packets;
 	stats_prev->tx_bytes = vsi_stats->tx_bytes;
 	stats_prev->rx_packets = vsi_stats->rx_packets;
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index cebb44f51d5f..7662c42e35c1 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -6985,44 +6985,31 @@ static void igb_extts(struct igb_adapter *adapter, int tsintr_tt)
 static void igb_tsync_interrupt(struct igb_adapter *adapter)
 {
 	struct e1000_hw *hw = &adapter->hw;
-	u32 ack = 0, tsicr = rd32(E1000_TSICR);
+	u32 tsicr = rd32(E1000_TSICR);
 	struct ptp_clock_event event;
 
 	if (tsicr & TSINTR_SYS_WRAP) {
 		event.type = PTP_CLOCK_PPS;
 		if (adapter->ptp_caps.pps)
 			ptp_clock_event(adapter->ptp_clock, &event);
-		ack |= TSINTR_SYS_WRAP;
 	}
 
 	if (tsicr & E1000_TSICR_TXTS) {
 		/* retrieve hardware timestamp */
 		schedule_work(&adapter->ptp_tx_work);
-		ack |= E1000_TSICR_TXTS;
 	}
 
-	if (tsicr & TSINTR_TT0) {
+	if (tsicr & TSINTR_TT0)
 		igb_perout(adapter, 0);
-		ack |= TSINTR_TT0;
-	}
 
-	if (tsicr & TSINTR_TT1) {
+	if (tsicr & TSINTR_TT1)
 		igb_perout(adapter, 1);
-		ack |= TSINTR_TT1;
-	}
 
-	if (tsicr & TSINTR_AUTT0) {
+	if (tsicr & TSINTR_AUTT0)
 		igb_extts(adapter, 0);
-		ack |= TSINTR_AUTT0;
-	}
 
-	if (tsicr & TSINTR_AUTT1) {
+	if (tsicr & TSINTR_AUTT1)
 		igb_extts(adapter, 1);
-		ack |= TSINTR_AUTT1;
-	}
-
-	/* acknowledge the interrupts */
-	wr32(E1000_TSICR, ack);
 }
 
 static irqreturn_t igb_msix_other(int irq, void *data)
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 81c21a893ede..e447ba037056 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -5302,25 +5302,22 @@ igc_features_check(struct sk_buff *skb, struct net_device *dev,
 
 static void igc_tsync_interrupt(struct igc_adapter *adapter)
 {
-	u32 ack, tsauxc, sec, nsec, tsicr;
 	struct igc_hw *hw = &adapter->hw;
+	u32 tsauxc, sec, nsec, tsicr;
 	struct ptp_clock_event event;
 	struct timespec64 ts;
 
 	tsicr = rd32(IGC_TSICR);
-	ack = 0;
 
 	if (tsicr & IGC_TSICR_SYS_WRAP) {
 		event.type = PTP_CLOCK_PPS;
 		if (adapter->ptp_caps.pps)
 			ptp_clock_event(adapter->ptp_clock, &event);
-		ack |= IGC_TSICR_SYS_WRAP;
 	}
 
 	if (tsicr & IGC_TSICR_TXTS) {
 		/* retrieve hardware timestamp */
 		igc_ptp_tx_tstamp_event(adapter);
-		ack |= IGC_TSICR_TXTS;
 	}
 
 	if (tsicr & IGC_TSICR_TT0) {
@@ -5334,7 +5331,6 @@ static void igc_tsync_interrupt(struct igc_adapter *adapter)
 		wr32(IGC_TSAUXC, tsauxc);
 		adapter->perout[0].start = ts;
 		spin_unlock(&adapter->tmreg_lock);
-		ack |= IGC_TSICR_TT0;
 	}
 
 	if (tsicr & IGC_TSICR_TT1) {
@@ -5348,7 +5344,6 @@ static void igc_tsync_interrupt(struct igc_adapter *adapter)
 		wr32(IGC_TSAUXC, tsauxc);
 		adapter->perout[1].start = ts;
 		spin_unlock(&adapter->tmreg_lock);
-		ack |= IGC_TSICR_TT1;
 	}
 
 	if (tsicr & IGC_TSICR_AUTT0) {
@@ -5358,7 +5353,6 @@ static void igc_tsync_interrupt(struct igc_adapter *adapter)
 		event.index = 0;
 		event.timestamp = sec * NSEC_PER_SEC + nsec;
 		ptp_clock_event(adapter->ptp_clock, &event);
-		ack |= IGC_TSICR_AUTT0;
 	}
 
 	if (tsicr & IGC_TSICR_AUTT1) {
@@ -5368,11 +5362,7 @@ static void igc_tsync_interrupt(struct igc_adapter *adapter)
 		event.index = 1;
 		event.timestamp = sec * NSEC_PER_SEC + nsec;
 		ptp_clock_event(adapter->ptp_clock, &event);
-		ack |= IGC_TSICR_AUTT1;
 	}
-
-	/* acknowledge the interrupts */
-	wr32(IGC_TSICR, ack);
 }
 
 /**