# \[PATCH net 9/9\] bnxt\_en: Fix PTP capability discovery - From: Michael Chan \ - Date: 2021-07-18 19:37:09 - List: netdev - Page: https://ratatoskr.run/netdev/2021/07/11207444 - Thread: https://ratatoskr.run/netdev/2021/07/11207435/t.md ```text 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: 93cb62d98e9c ("bnxt_en: Enable hardware PTP support") Cc: Richard Cochran Reviewed-by: Pavan Chebbi Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index b8b73c210995..4db162cee911 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -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; -- 2.18.1 ``` ## Attachments - [smime.p7s](https://ratatoskr.run/netdev/2021/07/11207444/attachment/0) (application/pkcs7-signature, 4209 bytes)