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bnxt_en: Fix PTP PPS setting bug

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The existing driver logic is always turning on PTP_CLK_REQ_PPS
regardless of the "on" parameter passed to bnxt_ptp_enable().
During shutdown, PTP_CLK_REQ_PPS may be turned off and this
bug will do the opposite and may trigger a PCIe PTM request TLP.
On some systems this can trigger a PCIe AER.

Fix it by properly configuring PTP_CLK_REQ_PPS based on the "on"
parameter.

Fixes: 9e518f2580 ("bnxt_en: 1PPS functions to configure TSIO pins")
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Keegan Freyhof <keegan.freyhof@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Link: https://patch.msgid.link/20260731190937.807270-6-michael.chan@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Keegan Freyhof
2026-07-31 12:09:37 -07:00
committed by Jakub Kicinski
parent c3faf548a0
commit 80eaf88efe
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
View File

@@ -495,12 +495,15 @@ static int bnxt_ptp_enable(struct ptp_clock_info *ptp_info,
return rc;
case PTP_CLK_REQ_PPS:
/* Configure PHC PPS IN */
rc = bnxt_ptp_cfg_pin(bp, 0, BNXT_PPS_PIN_PPS_IN);
pin_id = 0;
if (!on)
break;
rc = bnxt_ptp_cfg_pin(bp, pin_id, BNXT_PPS_PIN_PPS_IN);
if (rc)
return rc;
rc = bnxt_ptp_cfg_event(bp, BNXT_PPS_EVENT_INTERNAL);
if (!rc)
ptp->pps_info.pins[0].event = BNXT_PPS_EVENT_INTERNAL;
ptp->pps_info.pins[pin_id].event = BNXT_PPS_EVENT_INTERNAL;
return rc;
default:
netdev_err(ptp->bp->dev, "Unrecognized PIN function\n");