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bnxt_en: Fix PTP capability discovery

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The current PTP initialization logic does not account for firmware
reset that may cause PTP capability to change.  The valid pointer
bp->ptp_cfg is used to indicate that the device is capable of PTP
and that it has been initialized.  So we must clean up bp->ptp_cfg
and free it if the firmware after reset does not support PTP.

Fixes: 93cb62d98e ("bnxt_en: Enable hardware PTP support")
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2021-07-18 15:36:33 -04:00 committed by David S. Miller
parent d7859afb68
commit de5bf19414
1 changed files with 5 additions and 1 deletions
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6
drivers/net/ethernet/broadcom/bnxt/bnxt.c
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@ -7574,8 +7574,12 @@ static int __bnxt_hwrm_func_qcaps(struct bnxt *bp)
bp->flags &= ~BNXT_FLAG_WOL_CAP;
if (flags & FUNC_QCAPS_RESP_FLAGS_WOL_MAGICPKT_SUPPORTED)
bp->flags |= BNXT_FLAG_WOL_CAP;
if (flags & FUNC_QCAPS_RESP_FLAGS_PTP_SUPPORTED)
if (flags & FUNC_QCAPS_RESP_FLAGS_PTP_SUPPORTED) {
__bnxt_hwrm_ptp_qcfg(bp);
} else {
kfree(bp->ptp_cfg);
bp->ptp_cfg = NULL;
}
} else {
#ifdef CONFIG_BNXT_SRIOV
struct bnxt_vf_info *vf = &bp->vf;