From: Edward Cree <ecree@solarflare.com>
Date: Mon, 29 Jun 2020 14:39:32 +0100
Subject: sfc: commonise drain event handling
Patch-mainline: v5.9-rc1
Git-commit: 850b722756d6886b3269e548398934e81a3c7503
References: jsc#SLE-16683

Avoids a call from generic MCDI code into ef10.c.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/sfc/ef10.c |    8 --------
 drivers/net/ethernet/sfc/mcdi.c |   10 +++++++++-
 drivers/net/ethernet/sfc/nic.h  |    1 -
 3 files changed, 9 insertions(+), 10 deletions(-)

--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -3117,14 +3117,6 @@ fail:
 	netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
 }
 
-void efx_ef10_handle_drain_event(struct efx_nic *efx)
-{
-	if (atomic_dec_and_test(&efx->active_queues))
-		wake_up(&efx->flush_wq);
-
-	WARN_ON(atomic_read(&efx->active_queues) < 0);
-}
-
 static int efx_ef10_fini_dmaq(struct efx_nic *efx)
 {
 	struct efx_tx_queue *tx_queue;
--- a/drivers/net/ethernet/sfc/mcdi.c
+++ b/drivers/net/ethernet/sfc/mcdi.c
@@ -1299,6 +1299,14 @@ static void efx_mcdi_abandon(struct efx_
 	efx_schedule_reset(efx, RESET_TYPE_MCDI_TIMEOUT);
 }
 
+static void efx_handle_drain_event(struct efx_nic *efx)
+{
+	if (atomic_dec_and_test(&efx->active_queues))
+		wake_up(&efx->flush_wq);
+
+	WARN_ON(atomic_read(&efx->active_queues) < 0);
+}
+
 /* Called from efx_farch_ev_process and efx_ef10_ev_process for MCDI events */
 void efx_mcdi_process_event(struct efx_channel *channel,
 			    efx_qword_t *event)
@@ -1371,7 +1379,7 @@ void efx_mcdi_process_event(struct efx_c
 		BUILD_BUG_ON(MCDI_EVENT_TX_FLUSH_TO_DRIVER_LBN !=
 			     MCDI_EVENT_RX_FLUSH_TO_DRIVER_LBN);
 		if (!MCDI_EVENT_FIELD(*event, TX_FLUSH_TO_DRIVER))
-			efx_ef10_handle_drain_event(efx);
+			efx_handle_drain_event(efx);
 		break;
 	case MCDI_EVENT_CODE_TX_ERR:
 	case MCDI_EVENT_CODE_RX_ERR:
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -376,7 +376,6 @@ void falcon_stop_nic_stats(struct efx_ni
 int falcon_reset_xaui(struct efx_nic *efx);
 void efx_farch_dimension_resources(struct efx_nic *efx, unsigned sram_lim_qw);
 void efx_farch_init_common(struct efx_nic *efx);
-void efx_ef10_handle_drain_event(struct efx_nic *efx);
 void efx_farch_rx_push_indir_table(struct efx_nic *efx);
 void efx_farch_rx_pull_indir_table(struct efx_nic *efx);