3.16.80-rc1 review patch. If anyone has any objections, please let me know.
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From: Martin Habets <mhabets@xxxxxxxxxxxxxx>
commit 723eb53690041740a13ac78efeaf6804f5d684c9 upstream.
The workqueue only exists for the primary PF. For other functions
we hit a WARN_ON in kernel/workqueue.c.
Fixes: 7c236c43b838 ("sfc: Add support for IEEE-1588 PTP")
Signed-off-by: Martin Habets <mhabets@xxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/net/ethernet/sfc/ptp.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -1310,7 +1310,8 @@ 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);
