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sfc: Only cancel the PPS workqueue if it exists 

The workqueue only exists for the primary PF. For other functions
we hit a WARN_ON in kernel/workqueue.c.

Fixes: 7c236c43b8 ("sfc: Add support for IEEE-1588 PTP")
Signed-off-by: Martin Habets <mhabets@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin Habets 2019-11-21 17:52:15 +00:00 committed by David S. Miller
parent 5f9f0b11f0
commit 723eb53690
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/sfc/ptp.c
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@ -1531,7 +1531,8 @@ void efx_ptp_remove(struct efx_nic *efx)
(void)efx_ptp_disable(efx);
cancel_work_sync(&efx->ptp_data->work);
cancel_work_sync(&efx->ptp_data->pps_work);
if (efx->ptp_data->pps_workwq)
cancel_work_sync(&efx->ptp_data->pps_work);
skb_queue_purge(&efx->ptp_data->rxq);
skb_queue_purge(&efx->ptp_data->txq);