1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h
index f11170bc48bf..50247dfe8f57 100644
--- a/drivers/net/ethernet/sfc/efx.h
+++ b/drivers/net/ethernet/sfc/efx.h
@@ -163,4 +163,17 @@ extern void efx_link_status_changed(struct efx_nic *efx);
 extern void efx_link_set_advertising(struct efx_nic *efx, u32);
 extern void efx_link_set_wanted_fc(struct efx_nic *efx, u8);
 
+static inline void efx_device_detach_sync(struct efx_nic *efx)
+{
+        struct net_device *dev = efx->net_dev;
+
+        /* Lock/freeze all TX queues so that we can be sure the
+         * TX scheduler is stopped when we're done and before
+         * netif_device_present() becomes false.
+         */
+        netif_tx_lock(dev);
+        netif_device_detach(dev);
+        netif_tx_unlock(dev);
+}
+
 #endif /* EFX_EFX_H */