netdev - [PATCH net 1/1] igb: Fix PPS input and output using 3rd and 4th SDP

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Date:   Mon, 13 Feb 2023 10:58:22 -0800
From:   Tony Nguyen <anthony.l.nguyen@...el.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com
Cc:     Miroslav Lichvar <mlichvar@...hat.com>, netdev@...r.kernel.org,
        anthony.l.nguyen@...el.com, kernel.hbk@...il.com,
        richardcochran@...il.com, Matt Corallo <ntp-lists@...tcorallo.com>,
        Jacob Keller <jacob.e.keller@...el.com>,
        Gurucharan G <gurucharanx.g@...el.com>
Subject: [PATCH net 1/1] igb: Fix PPS input and output using 3rd and 4th SDP

From: Miroslav Lichvar <mlichvar@...hat.com>

Fix handling of the tsync interrupt to compare the pin number with
IGB_N_SDP instead of IGB_N_EXTTS/IGB_N_PEROUT and fix the indexing to
the perout array.

Fixes: cf99c1dd7b77 ("igb: move PEROUT and EXTTS isr logic to separate functions")
Reported-by: Matt Corallo <ntp-lists@...tcorallo.com>
Cc: Jacob Keller <jacob.e.keller@...el.com>
Signed-off-by: Miroslav Lichvar <mlichvar@...hat.com>
Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>
Tested-by: Gurucharan G <gurucharanx.g@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/igb/igb_main.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 3c0c35ecea10..d8e3048b93dd 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -6794,7 +6794,7 @@ static void igb_perout(struct igb_adapter *adapter, int tsintr_tt)
 	struct timespec64 ts;
 	u32 tsauxc;
 
-	if (pin < 0 || pin >= IGB_N_PEROUT)
+	if (pin < 0 || pin >= IGB_N_SDP)
 		return;
 
 	spin_lock(&adapter->tmreg_lock);
@@ -6802,7 +6802,7 @@ static void igb_perout(struct igb_adapter *adapter, int tsintr_tt)
 	if (hw->mac.type == e1000_82580 ||
 	    hw->mac.type == e1000_i354 ||
 	    hw->mac.type == e1000_i350) {
-		s64 ns = timespec64_to_ns(&adapter->perout[pin].period);
+		s64 ns = timespec64_to_ns(&adapter->perout[tsintr_tt].period);
 		u32 systiml, systimh, level_mask, level, rem;
 		u64 systim, now;
 
@@ -6850,8 +6850,8 @@ static void igb_perout(struct igb_adapter *adapter, int tsintr_tt)
 		ts.tv_nsec = (u32)systim;
 		ts.tv_sec  = ((u32)(systim >> 32)) & 0xFF;
 	} else {
-		ts = timespec64_add(adapter->perout[pin].start,
-				    adapter->perout[pin].period);
+		ts = timespec64_add(adapter->perout[tsintr_tt].start,
+				    adapter->perout[tsintr_tt].period);
 	}
 
 	/* u32 conversion of tv_sec is safe until y2106 */
@@ -6860,7 +6860,7 @@ static void igb_perout(struct igb_adapter *adapter, int tsintr_tt)
 	tsauxc = rd32(E1000_TSAUXC);
 	tsauxc |= TSAUXC_EN_TT0;
 	wr32(E1000_TSAUXC, tsauxc);
-	adapter->perout[pin].start = ts;
+	adapter->perout[tsintr_tt].start = ts;
 
 	spin_unlock(&adapter->tmreg_lock);
 }
@@ -6874,7 +6874,7 @@ static void igb_extts(struct igb_adapter *adapter, int tsintr_tt)
 	struct ptp_clock_event event;
 	struct timespec64 ts;
 
-	if (pin < 0 || pin >= IGB_N_EXTTS)
+	if (pin < 0 || pin >= IGB_N_SDP)
 		return;
 
 	if (hw->mac.type == e1000_82580 ||
-- 
2.38.1