drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c: In function 'bnxt_ptp_init':
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:1141:13: error: implicit declaration of function 'boot_cpu_has'; did you mean 'boot_cpu_init'? [-Wimplicit-function-declaration]
 1141 |             boot_cpu_has(X86_FEATURE_ART))
      |             ^~~~~~~~~~~~
      |             boot_cpu_init
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:1141:26: error: 'X86_FEATURE_ART' undeclared (first use in this function); did you mean 'X86_FEATURE_ANY'?
 1141 |             boot_cpu_has(X86_FEATURE_ART))
      |                          ^~~~~~~~~~~~~~~
      |                          X86_FEATURE_ANY
drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c:1141:26: note: each undeclared identifier is reported only once for each function it appears in

Caused by commit

  c470195b989f ("bnxt_en: Add PTP .getcrosststamp() interface to get device/host times")

boot_cpu_has() only exists for X86 ...

I have applied the folloring hack for today:

From: Stephen Rothwell <redacted>
Date: Tue, 13 Jan 2026 16:51:58 +1100
Subject: [PATCH] fix up for "bnxt_en: Add PTP .getcrosststamp() interface to
 get device/host times"

Signed-off-by: Stephen Rothwell <redacted>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
index 75ad385f5f79..20f5a9f38fee 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c

@@ -882,6 +882,7 @@ void bnxt_tx_ts_cmp(struct bnxt *bp, struct bnxt_napi *bnapi,
        }
 }

+#ifdef X86_FEATURE_ART
 static int bnxt_phc_get_syncdevicetime(ktime_t *device,
                                       struct system_counterval_t *system,
                                       void *ctx)

@@ -924,6 +925,7 @@ static int bnxt_ptp_getcrosststamp(struct ptp_clock_info *ptp_info,
        return get_device_system_crosststamp(bnxt_phc_get_syncdevicetime,
                                             ptp, NULL, xtstamp);
 }
+#endif

 static const struct ptp_clock_info bnxt_ptp_caps = {
        .owner          = THIS_MODULE,

@@ -1137,9 +1139,11 @@ int bnxt_ptp_init(struct bnxt *bp)
                if (bnxt_ptp_pps_init(bp))
                        netdev_err(bp->dev, "1pps not initialized, continuing without 1pps support\n");
        }
+#ifdef X86_FEATURE_ART
        if ((bp->fw_cap & BNXT_FW_CAP_PTP_PTM) && pcie_ptm_enabled(bp->pdev) &&
            boot_cpu_has(X86_FEATURE_ART))
                ptp->ptp_info.getcrosststamp = bnxt_ptp_getcrosststamp;
+#endif

        ptp->ptp_clock = ptp_clock_register(&ptp->ptp_info, &bp->pdev->dev);
        if (IS_ERR(ptp->ptp_clock)) {
--

2.52.0



--
Cheers,
Stephen Rothwell