Merge branch 'net-in_interrupt-cleanup-and-fixes'

Thomas Gleixner says:

====================
net: in_interrupt() cleanup and fixes

in the discussion about preempt count consistency accross kernel configurations:

  https://lore.kernel.org/r/20200914204209.256266093@linutronix.de/

Linus clearly requested that code in drivers and libraries which changes
behaviour based on execution context should either be split up so that
e.g. task context invocations and BH invocations have different interfaces
or if that's not possible the context information has to be provided by the
caller which knows in which context it is executing.

This includes conditional locking, allocation mode (GFP_*) decisions and
avoidance of code paths which might sleep.

In the long run, usage of 'preemptible, in_*irq etc.' should be banned from
driver code completely.

This is the second version of the first batch of related changes. V1 can be
found here:

     https://lore.kernel.org/r/20200927194846.045411263@linutronix.de

Changes vs. V1:

  - Rebased to net-next

  - Fixed the half done rename sillyness in the ENIC patch.

  - Fixed the IONIC driver fallout.

  - Picked up the SFC fix from Edward and adjusted the GFP_KERNEL change
    accordingly.

  - Addressed the review comments vs. BCRFMAC.

  - Collected Reviewed/Acked-by tags as appropriate.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

34 files changed, 162 insertions, 134 deletions

diff --git a/drivers/net/ethernet/amd/sun3lance.c b/drivers/net/ethernet/amd/sun3lance.c
index e1fde585fd0d..00ae1081254d 100644
--- a/drivers/net/ethernet/amd/sun3lance.c
+++ b/drivers/net/ethernet/amd/sun3lance.c
@@ -657,16 +657,6 @@ static irqreturn_t lance_interrupt( int irq, void *dev_id)
 	struct net_device *dev = dev_id;
 	struct lance_private *lp = netdev_priv(dev);
 	int csr0;
-	static int in_interrupt;
-
-	if (dev == NULL) {
-		DPRINTK( 1, ( "lance_interrupt(): invalid dev_id\n" ));
-		return IRQ_NONE;
-	}
-
-	if (in_interrupt)
-		DPRINTK( 2, ( "%s: Re-entering the interrupt handler.\n", dev->name ));
-	in_interrupt = 1;
 
  still_more:
 	flush_cache_all();
@@ -774,7 +764,6 @@ static irqreturn_t lance_interrupt( int irq, void *dev_id)
 
 	DPRINTK( 2, ( "%s: exiting interrupt, csr0=%#04x.\n",
 				  dev->name, DREG ));
-	in_interrupt = 0;
 	return IRQ_HANDLED;
 }
 
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 00de463268a8..0c12cf7bda50 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -220,7 +220,6 @@ static void atl1c_phy_config(struct timer_list *t)
 
 void atl1c_reinit_locked(struct atl1c_adapter *adapter)
 {
-	WARN_ON(in_interrupt());
 	atl1c_down(adapter);
 	atl1c_up(adapter);
 	clear_bit(__AT_RESETTING, &adapter->flags);
diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
index e43f71849daf..098b0328e3cb 100644
--- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
@@ -127,8 +127,6 @@ static void atl1e_phy_config(struct timer_list *t)
 
 void atl1e_reinit_locked(struct atl1e_adapter *adapter)
 {
-
-	WARN_ON(in_interrupt());
 	while (test_and_set_bit(__AT_RESETTING, &adapter->flags))
 		msleep(1);
 	atl1e_down(adapter);
diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c
index 021fb0e6417a..7b80d924632a 100644
--- a/drivers/net/ethernet/atheros/atlx/atl2.c
+++ b/drivers/net/ethernet/atheros/atlx/atl2.c
@@ -1086,7 +1086,6 @@ err_up:
 
 static void atl2_reinit_locked(struct atl2_adapter *adapter)
 {
-	WARN_ON(in_interrupt());
 	while (test_and_set_bit(__ATL2_RESETTING, &adapter->flags))
 		msleep(1);
 	atl2_down(adapter);
diff --git a/drivers/net/ethernet/chelsio/cxgb3/adapter.h b/drivers/net/ethernet/chelsio/cxgb3/adapter.h
index 087ff0ffb597..f80fbd81b609 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/adapter.h
+++ b/drivers/net/ethernet/chelsio/cxgb3/adapter.h
@@ -313,6 +313,7 @@ void t3_os_link_fault(struct adapter *adapter, int port_id, int state);
 void t3_os_link_fault_handler(struct adapter *adapter, int port_id);
 
 void t3_sge_start(struct adapter *adap);
+void t3_sge_stop_dma(struct adapter *adap);
 void t3_sge_stop(struct adapter *adap);
 void t3_start_sge_timers(struct adapter *adap);
 void t3_stop_sge_timers(struct adapter *adap);
diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
index 6ed58bc12020..84ad7261e243 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c
@@ -2996,7 +2996,7 @@ void t3_fatal_err(struct adapter *adapter)
 	unsigned int fw_status[4];
 
 	if (adapter->flags & FULL_INIT_DONE) {
-		t3_sge_stop(adapter);
+		t3_sge_stop_dma(adapter);
 		t3_write_reg(adapter, A_XGM_TX_CTRL, 0);
 		t3_write_reg(adapter, A_XGM_RX_CTRL, 0);
 		t3_write_reg(adapter, XGM_REG(A_XGM_TX_CTRL, 1), 0);
diff --git a/drivers/net/ethernet/chelsio/cxgb3/sge.c b/drivers/net/ethernet/chelsio/cxgb3/sge.c
index 5bb3f0cb36ed..e18e9ce27f94 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/sge.c
@@ -3270,30 +3270,40 @@ void t3_sge_start(struct adapter *adap)
 }
 
 /**
- *	t3_sge_stop - disable SGE operation
+ *	t3_sge_stop_dma - Disable SGE DMA engine operation
  *	@adap: the adapter
  *
- *	Disables the DMA engine.  This can be called in emeregencies (e.g.,
- *	from error interrupts) or from normal process context.  In the latter
- *	case it also disables any pending queue restart tasklets.  Note that
- *	if it is called in interrupt context it cannot disable the restart
- *	tasklets as it cannot wait, however the tasklets will have no effect
- *	since the doorbells are disabled and the driver will call this again
- *	later from process context, at which time the tasklets will be stopped
- *	if they are still running.
+ *	Can be invoked from interrupt context e.g.  error handler.
+ *
+ *	Note that this function cannot disable the restart of tasklets as
+ *	it cannot wait if called from interrupt context, however the
+ *	tasklets will have no effect since the doorbells are disabled. The
+ *	driver will call tg3_sge_stop() later from process context, at
+ *	which time the tasklets will be stopped if they are still running.
  */
-void t3_sge_stop(struct adapter *adap)
+void t3_sge_stop_dma(struct adapter *adap)
 {
 	t3_set_reg_field(adap, A_SG_CONTROL, F_GLOBALENABLE, 0);
-	if (!in_interrupt()) {
-		int i;
+}
+
+/**
+ *	t3_sge_stop - disable SGE operation completly
+ *	@adap: the adapter
+ *
+ *	Called from process context. Disables the DMA engine and any
+ *	pending queue restart tasklets.
+ */
+void t3_sge_stop(struct adapter *adap)
+{
+	int i;
 
-		for (i = 0; i < SGE_QSETS; ++i) {
-			struct sge_qset *qs = &adap->sge.qs[i];
+	t3_sge_stop_dma(adap);
 
-			tasklet_kill(&qs->txq[TXQ_OFLD].qresume_tsk);
-			tasklet_kill(&qs->txq[TXQ_CTRL].qresume_tsk);
-		}
+	for (i = 0; i < SGE_QSETS; ++i) {
+		struct sge_qset *qs = &adap->sge.qs[i];
+
+		tasklet_kill(&qs->txq[TXQ_OFLD].qresume_tsk);
+		tasklet_kill(&qs->txq[TXQ_CTRL].qresume_tsk);
 	}
 }
 
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index 2b942b4825d4..54e22f17af3d 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -4872,9 +4872,6 @@ void t4_sge_stop(struct adapter *adap)
 	int i;
 	struct sge *s = &adap->sge;
 
-	if (in_interrupt())  /* actions below require waiting */
-		return;
-
 	if (s->rx_timer.function)
 		del_timer_sync(&s->rx_timer);
 	if (s->tx_timer.function)
diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h
index 18f3aeb88f22..c67a16a48d62 100644
--- a/drivers/net/ethernet/cisco/enic/enic.h
+++ b/drivers/net/ethernet/cisco/enic/enic.h
@@ -169,6 +169,7 @@ struct enic {
 	u16 num_vfs;
 #endif
 	spinlock_t enic_api_lock;
+	bool enic_api_busy;
 	struct enic_port_profile *pp;
 
 	/* work queue cache line section */
diff --git a/drivers/net/ethernet/cisco/enic/enic_api.c b/drivers/net/ethernet/cisco/enic/enic_api.c
index 89915681473c..3bdc74fba1e3 100644
--- a/drivers/net/ethernet/cisco/enic/enic_api.c
+++ b/drivers/net/ethernet/cisco/enic/enic_api.c
@@ -34,6 +34,12 @@ int enic_api_devcmd_proxy_by_index(struct net_device *netdev, int vf,
 	struct vnic_dev *vdev = enic->vdev;
 
 	spin_lock(&enic->enic_api_lock);
+	while (enic->enic_api_busy) {
+		spin_unlock(&enic->enic_api_lock);
+		cpu_relax();
+		spin_lock(&enic->enic_api_lock);
+	}
+
 	spin_lock_bh(&enic->devcmd_lock);
 
 	vnic_dev_cmd_proxy_by_index_start(vdev, vf);
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index 4f0329d8778f..fb269d587b74 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -2107,8 +2107,6 @@ static int enic_dev_wait(struct vnic_dev *vdev,
 	int done;
 	int err;
 
-	BUG_ON(in_interrupt());
-
 	err = start(vdev, arg);
 	if (err)
 		return err;
@@ -2297,6 +2295,13 @@ static int enic_set_rss_nic_cfg(struct enic *enic)
 		rss_hash_bits, rss_base_cpu, rss_enable);
 }
 
+static void enic_set_api_busy(struct enic *enic, bool busy)
+{
+	spin_lock(&enic->enic_api_lock);
+	enic->enic_api_busy = busy;
+	spin_unlock(&enic->enic_api_lock);
+}
+
 static void enic_reset(struct work_struct *work)
 {
 	struct enic *enic = container_of(work, struct enic, reset);
@@ -2306,7 +2311,9 @@ static void enic_reset(struct work_struct *work)
 
 	rtnl_lock();
 
-	spin_lock(&enic->enic_api_lock);
+	/* Stop any activity from infiniband */
+	enic_set_api_busy(enic, true);
+
 	enic_stop(enic->netdev);
 	enic_dev_soft_reset(enic);
 	enic_reset_addr_lists(enic);
@@ -2314,7 +2321,10 @@ static void enic_reset(struct work_struct *work)
 	enic_set_rss_nic_cfg(enic);
 	enic_dev_set_ig_vlan_rewrite_mode(enic);
 	enic_open(enic->netdev);
-	spin_unlock(&enic->enic_api_lock);
+
+	/* Allow infiniband to fiddle with the device again */
+	enic_set_api_busy(enic, false);
+
 	call_netdevice_notifiers(NETDEV_REBOOT, enic->netdev);
 
 	rtnl_unlock();
@@ -2326,7 +2336,9 @@ static void enic_tx_hang_reset(struct work_struct *work)
 
 	rtnl_lock();
 
-	spin_lock(&enic->enic_api_lock);
+	/* Stop any activity from infiniband */
+	enic_set_api_busy(enic, true);
+
 	enic_dev_hang_notify(enic);
 	enic_stop(enic->netdev);
 	enic_dev_hang_reset(enic);
@@ -2335,7 +2347,10 @@ static void enic_tx_hang_reset(struct work_struct *work)
 	enic_set_rss_nic_cfg(enic);
 	enic_dev_set_ig_vlan_rewrite_mode(enic);
 	enic_open(enic->netdev);
-	spin_unlock(&enic->enic_api_lock);
+
+	/* Allow infiniband to fiddle with the device again */
+	enic_set_api_busy(enic, false);
+
 	call_netdevice_notifiers(NETDEV_REBOOT, enic->netdev);
 
 	rtnl_unlock();
diff --git a/drivers/net/ethernet/freescale/fec_mpc52xx.c b/drivers/net/ethernet/freescale/fec_mpc52xx.c
index 7a3f066e611d..b3bad429e03b 100644
--- a/drivers/net/ethernet/freescale/fec_mpc52xx.c
+++ b/drivers/net/ethernet/freescale/fec_mpc52xx.c
@@ -74,7 +74,7 @@ struct mpc52xx_fec_priv {
 static irqreturn_t mpc52xx_fec_interrupt(int, void *);
 static irqreturn_t mpc52xx_fec_rx_interrupt(int, void *);
 static irqreturn_t mpc52xx_fec_tx_interrupt(int, void *);
-static void mpc52xx_fec_stop(struct net_device *dev);
+static void mpc52xx_fec_stop(struct net_device *dev, bool may_sleep);
 static void mpc52xx_fec_start(struct net_device *dev);
 static void mpc52xx_fec_reset(struct net_device *dev);
 
@@ -283,7 +283,7 @@ static int mpc52xx_fec_close(struct net_device *dev)
 
 	netif_stop_queue(dev);
 
-	mpc52xx_fec_stop(dev);
+	mpc52xx_fec_stop(dev, true);
 
 	mpc52xx_fec_free_rx_buffers(dev, priv->rx_dmatsk);
 
@@ -693,7 +693,7 @@ static void mpc52xx_fec_start(struct net_device *dev)
  *
  * stop all activity on fec and empty dma buffers
  */
-static void mpc52xx_fec_stop(struct net_device *dev)
+static void mpc52xx_fec_stop(struct net_device *dev, bool may_sleep)
 {
 	struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 	struct mpc52xx_fec __iomem *fec = priv->fec;
@@ -706,7 +706,7 @@ static void mpc52xx_fec_stop(struct net_device *dev)
 	bcom_disable(priv->rx_dmatsk);
 
 	/* Wait for tx queue to drain, but only if we're in process context */
-	if (!in_interrupt()) {
+	if (may_sleep) {
 		timeout = jiffies + msecs_to_jiffies(2000);
 		while (time_before(jiffies, timeout) &&
 				!bcom_queue_empty(priv->tx_dmatsk))
@@ -738,7 +738,7 @@ static void mpc52xx_fec_reset(struct net_device *dev)
 	struct mpc52xx_fec_priv *priv = netdev_priv(dev);
 	struct mpc52xx_fec __iomem *fec = priv->fec;
 
-	mpc52xx_fec_stop(dev);
+	mpc52xx_fec_stop(dev, false);
 
 	out_be32(&fec->rfifo_status, in_be32(&fec->rfifo_status));
 	out_be32(&fec->reset_cntrl, FEC_RESET_CNTRL_RESET_FIFO);
diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c
index 76bb77b4607a..8cc651d37a7f 100644
--- a/drivers/net/ethernet/intel/e100.c
+++ b/drivers/net/ethernet/intel/e100.c
@@ -1531,7 +1531,7 @@ static int e100_hw_init(struct nic *nic)
 	e100_hw_reset(nic);
 
 	netif_err(nic, hw, nic->netdev, "e100_hw_init\n");
-	if (!in_interrupt() && (err = e100_self_test(nic)))
+	if ((err = e100_self_test(nic)))
 		return err;
 
 	if ((err = e100_phy_init(nic)))
@@ -2155,7 +2155,7 @@ static int e100_rx_alloc_list(struct nic *nic)
 	nic->rx_to_use = nic->rx_to_clean = NULL;
 	nic->ru_running = RU_UNINITIALIZED;
 
-	if (!(nic->rxs = kcalloc(count, sizeof(struct rx), GFP_ATOMIC)))
+	if (!(nic->rxs = kcalloc(count, sizeof(struct rx), GFP_KERNEL)))
 		return -ENOMEM;
 
 	for (rx = nic->rxs, i = 0; i < count; rx++, i++) {
diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
index 906591614553..5e28cf4fa2cd 100644
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -536,7 +536,6 @@ void e1000_down(struct e1000_adapter *adapter)
 
 void e1000_reinit_locked(struct e1000_adapter *adapter)
 {
-	WARN_ON(in_interrupt());
 	while (test_and_set_bit(__E1000_RESETTING, &adapter->flags))
 		msleep(1);
 
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
index 140212bfe08b..9e3103fae723 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c
@@ -221,8 +221,6 @@ static bool fm10k_prepare_for_reset(struct fm10k_intfc *interface)
 {
 	struct net_device *netdev = interface->netdev;
 
-	WARN_ON(in_interrupt());
-
 	/* put off any impending NetWatchDogTimeout */
 	netif_trans_update(netdev);
 
diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index 70bd3f47e43a..929c64789119 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -6691,7 +6691,6 @@ static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
 {
 	struct i40e_pf *pf = vsi->back;
 
-	WARN_ON(in_interrupt());
 	while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state))
 		usleep_range(1000, 2000);
 	i40e_down(vsi);
@@ -8464,9 +8463,6 @@ void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
 {
 	u32 val;
 
-	WARN_ON(in_interrupt());
-
-
 	/* do the biggest reset indicated */
 	if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
 
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index ffef4c901ea2..1d74466ce77f 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -486,7 +486,6 @@ static void ice_do_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
 	struct ice_hw *hw = &pf->hw;
 
 	dev_dbg(dev, "reset_type 0x%x requested\n", reset_type);
-	WARN_ON(in_interrupt());
 
 	ice_prepare_for_reset(pf);
 
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 368f950f68b1..5fc2c381da55 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -2221,7 +2221,6 @@ void igb_down(struct igb_adapter *adapter)
 
 void igb_reinit_locked(struct igb_adapter *adapter)
 {
-	WARN_ON(in_interrupt());
 	while (test_and_set_bit(__IGB_RESETTING, &adapter->state))
 		usleep_range(1000, 2000);
 	igb_down(adapter);
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 569747bbefd8..9112dff075cf 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -3833,7 +3833,6 @@ void igc_down(struct igc_adapter *adapter)
 
 void igc_reinit_locked(struct igc_adapter *adapter)
 {
-	WARN_ON(in_interrupt());
 	while (test_and_set_bit(__IGC_RESETTING, &adapter->state))
 		usleep_range(1000, 2000);
 	igc_down(adapter);
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 02899f79f0ff..a190d5c616fc 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -5672,7 +5672,6 @@ static void ixgbe_up_complete(struct ixgbe_adapter *adapter)
 
 void ixgbe_reinit_locked(struct ixgbe_adapter *adapter)
 {
-	WARN_ON(in_interrupt());
 	/* put off any impending NetWatchDogTimeout */
 	netif_trans_update(adapter->netdev);
 
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index ba54c728aef2..82fce27f682b 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -2522,8 +2522,6 @@ void ixgbevf_down(struct ixgbevf_adapter *adapter)
 
 void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter)
 {
-	WARN_ON(in_interrupt());
-
 	while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state))
 		msleep(1);
 
diff --git a/drivers/net/ethernet/natsemi/sonic.c b/drivers/net/ethernet/natsemi/sonic.c
index dd3605aa5f23..d17d1b4f2585 100644
--- a/drivers/net/ethernet/natsemi/sonic.c
+++ b/drivers/net/ethernet/natsemi/sonic.c
@@ -143,7 +143,7 @@ static int sonic_open(struct net_device *dev)
 	/*
 	 * Initialize the SONIC
 	 */
-	sonic_init(dev);
+	sonic_init(dev, true);
 
 	netif_start_queue(dev);
 
@@ -153,7 +153,7 @@ static int sonic_open(struct net_device *dev)
 }
 
 /* Wait for the SONIC to become idle. */
-static void sonic_quiesce(struct net_device *dev, u16 mask)
+static void sonic_quiesce(struct net_device *dev, u16 mask, bool may_sleep)
 {
 	struct sonic_local * __maybe_unused lp = netdev_priv(dev);
 	int i;
@@ -163,7 +163,7 @@ static void sonic_quiesce(struct net_device *dev, u16 mask)
 		bits = SONIC_READ(SONIC_CMD) & mask;
 		if (!bits)
 			return;
-		if (irqs_disabled() || in_interrupt())
+		if (!may_sleep)
 			udelay(20);
 		else
 			usleep_range(100, 200);
@@ -187,7 +187,7 @@ static int sonic_close(struct net_device *dev)
 	 * stop the SONIC, disable interrupts
 	 */
 	SONIC_WRITE(SONIC_CMD, SONIC_CR_RXDIS);
-	sonic_quiesce(dev, SONIC_CR_ALL);
+	sonic_quiesce(dev, SONIC_CR_ALL, true);
 
 	SONIC_WRITE(SONIC_IMR, 0);
 	SONIC_WRITE(SONIC_ISR, 0x7fff);
@@ -229,7 +229,7 @@ static void sonic_tx_timeout(struct net_device *dev, unsigned int txqueue)
 	 * disable all interrupts before releasing DMA buffers
 	 */
 	SONIC_WRITE(SONIC_CMD, SONIC_CR_RXDIS);
-	sonic_quiesce(dev, SONIC_CR_ALL);
+	sonic_quiesce(dev, SONIC_CR_ALL, false);
 
 	SONIC_WRITE(SONIC_IMR, 0);
 	SONIC_WRITE(SONIC_ISR, 0x7fff);
@@ -246,7 +246,7 @@ static void sonic_tx_timeout(struct net_device *dev, unsigned int txqueue)
 		}
 	}
 	/* Try to restart the adaptor. */
-	sonic_init(dev);
+	sonic_init(dev, false);
 	lp->stats.tx_errors++;
 	netif_trans_update(dev); /* prevent tx timeout */
 	netif_wake_queue(dev);
@@ -692,9 +692,9 @@ static void sonic_multicast_list(struct net_device *dev)
 
 			/* LCAM and TXP commands can't be used simultaneously */
 			spin_lock_irqsave(&lp->lock, flags);
-			sonic_quiesce(dev, SONIC_CR_TXP);
+			sonic_quiesce(dev, SONIC_CR_TXP, false);
 			SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
-			sonic_quiesce(dev, SONIC_CR_LCAM);
+			sonic_quiesce(dev, SONIC_CR_LCAM, false);
 			spin_unlock_irqrestore(&lp->lock, flags);
 		}
 	}
@@ -708,7 +708,7 @@ static void sonic_multicast_list(struct net_device *dev)
 /*
  * Initialize the SONIC ethernet controller.
  */
-static int sonic_init(struct net_device *dev)
+static int sonic_init(struct net_device *dev, bool may_sleep)
 {
 	struct sonic_local *lp = netdev_priv(dev);
 	int i;
@@ -730,7 +730,7 @@ static int sonic_init(struct net_device *dev)
 	 */
 	SONIC_WRITE(SONIC_CMD, 0);
 	SONIC_WRITE(SONIC_CMD, SONIC_CR_RXDIS | SONIC_CR_STP);
-	sonic_quiesce(dev, SONIC_CR_ALL);
+	sonic_quiesce(dev, SONIC_CR_ALL, may_sleep);
 
 	/*
 	 * initialize the receive resource area
@@ -759,7 +759,7 @@ static int sonic_init(struct net_device *dev)
 	netif_dbg(lp, ifup, dev, "%s: issuing RRRA command\n", __func__);
 
 	SONIC_WRITE(SONIC_CMD, SONIC_CR_RRRA);
-	sonic_quiesce(dev, SONIC_CR_RRRA);
+	sonic_quiesce(dev, SONIC_CR_RRRA, may_sleep);
 
 	/*
 	 * Initialize the receive descriptors so that they
@@ -834,7 +834,7 @@ static int sonic_init(struct net_device *dev)
 	 * load the CAM
 	 */
 	SONIC_WRITE(SONIC_CMD, SONIC_CR_LCAM);
-	sonic_quiesce(dev, SONIC_CR_LCAM);
+	sonic_quiesce(dev, SONIC_CR_LCAM, may_sleep);
 
 	/*
 	 * enable receiver, disable loopback
diff --git a/drivers/net/ethernet/natsemi/sonic.h b/drivers/net/ethernet/natsemi/sonic.h
index 3cbb62c860c8..a5b803eb8c8a 100644
--- a/drivers/net/ethernet/natsemi/sonic.h
+++ b/drivers/net/ethernet/natsemi/sonic.h
@@ -338,7 +338,7 @@ static void sonic_rx(struct net_device *dev);
 static int sonic_close(struct net_device *dev);
 static struct net_device_stats *sonic_get_stats(struct net_device *dev);
 static void sonic_multicast_list(struct net_device *dev);
-static int sonic_init(struct net_device *dev);
+static int sonic_init(struct net_device *dev, bool may_sleep);
 static void sonic_tx_timeout(struct net_device *dev, unsigned int txqueue);
 static void sonic_msg_init(struct net_device *dev);
 static int sonic_alloc_descriptors(struct net_device *dev);
diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c
index 6aba267036dd..f5d48d7c4ce2 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-config.c
+++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c
@@ -2306,16 +2306,9 @@ exit:
 static inline void
 vxge_os_dma_malloc_async(struct pci_dev *pdev, void *devh, unsigned long size)
 {
-	gfp_t flags;
 	void *vaddr;
 
-	if (in_interrupt())
-		flags = GFP_ATOMIC | GFP_DMA;
-	else
-		flags = GFP_KERNEL | GFP_DMA;
-
-	vaddr = kmalloc((size), flags);
-
+	vaddr = kmalloc(size, GFP_KERNEL | GFP_DMA);
 	vxge_hw_blockpool_block_add(devh, vaddr, size, pdev, pdev);
 }
 
diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.h b/drivers/net/ethernet/neterion/vxge/vxge-config.h
index 373165119850..0cd0750484ae 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-config.h
+++ b/drivers/net/ethernet/neterion/vxge/vxge-config.h
@@ -1899,18 +1899,13 @@ static inline void *vxge_os_dma_malloc(struct pci_dev *pdev,
 			struct pci_dev **p_dmah,
 			struct pci_dev **p_dma_acch)
 {
-	gfp_t flags;
 	void *vaddr;
 	unsigned long misaligned = 0;
 	int realloc_flag = 0;
 	*p_dma_acch = *p_dmah = NULL;
 
-	if (in_interrupt())
-		flags = GFP_ATOMIC | GFP_DMA;
-	else
-		flags = GFP_KERNEL | GFP_DMA;
 realloc:
-	vaddr = kmalloc((size), flags);
+	vaddr = kmalloc(size, GFP_KERNEL | GFP_DMA);
 	if (vaddr == NULL)
 		return vaddr;
 	misaligned = (unsigned long)VXGE_ALIGN((unsigned long)vaddr,
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_dev.c b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
index 6068f51a11d9..a02f710200da 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_dev.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_dev.c
@@ -22,7 +22,7 @@ static void ionic_watchdog_cb(struct timer_list *t)
 	hb = ionic_heartbeat_check(ionic);
 
 	if (hb >= 0 && ionic->lif)
-		ionic_link_status_check_request(ionic->lif);
+		ionic_link_status_check_request(ionic->lif, false);
 }
 
 void ionic_init_devinfo(struct ionic *ionic)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index eb6fe37c0df6..1b4d5eb9bbc9 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -151,7 +151,7 @@ static void ionic_link_status_check(struct ionic_lif *lif)
 	clear_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state);
 }
 
-void ionic_link_status_check_request(struct ionic_lif *lif)
+void ionic_link_status_check_request(struct ionic_lif *lif, bool can_sleep)
 {
 	struct ionic_deferred_work *work;
 
@@ -159,7 +159,7 @@ void ionic_link_status_check_request(struct ionic_lif *lif)
 	if (test_and_set_bit(IONIC_LIF_F_LINK_CHECK_REQUESTED, lif->state))
 		return;
 
-	if (in_interrupt()) {
+	if (!can_sleep) {
 		work = kzalloc(sizeof(*work), GFP_ATOMIC);
 		if (!work)
 			return;
@@ -798,7 +798,7 @@ static bool ionic_notifyq_service(struct ionic_cq *cq,
 
 	switch (le16_to_cpu(comp->event.ecode)) {
 	case IONIC_EVENT_LINK_CHANGE:
-		ionic_link_status_check_request(lif);
+		ionic_link_status_check_request(lif, false);
 		break;
 	case IONIC_EVENT_RESET:
 		work = kzalloc(sizeof(*work), GFP_ATOMIC);
@@ -981,7 +981,8 @@ static int ionic_lif_addr_del(struct ionic_lif *lif, const u8 *addr)
 	return 0;
 }
 
-static int ionic_lif_addr(struct ionic_lif *lif, const u8 *addr, bool add)
+static int ionic_lif_addr(struct ionic_lif *lif, const u8 *addr, bool add,
+			  bool can_sleep)
 {
 	struct ionic *ionic = lif->ionic;
 	struct ionic_deferred_work *work;
@@ -1010,7 +1011,7 @@ static int ionic_lif_addr(struct ionic_lif *lif, const u8 *addr, bool add)
 			lif->nucast--;
 	}
 
-	if (in_interrupt()) {
+	if (!can_sleep) {
 		work = kzalloc(sizeof(*work), GFP_ATOMIC);
 		if (!work) {
 			netdev_err(lif->netdev, "%s OOM\n", __func__);
@@ -1036,12 +1037,22 @@ static int ionic_lif_addr(struct ionic_lif *lif, const u8 *addr, bool add)
 
 static int ionic_addr_add(struct net_device *netdev, const u8 *addr)
 {
-	return ionic_lif_addr(netdev_priv(netdev), addr, true);
+	return ionic_lif_addr(netdev_priv(netdev), addr, true, true);
+}
+
+static int ionic_ndo_addr_add(struct net_device *netdev, const u8 *addr)
+{
+	return ionic_lif_addr(netdev_priv(netdev), addr, true, false);
 }
 
 static int ionic_addr_del(struct net_device *netdev, const u8 *addr)
 {
-	return ionic_lif_addr(netdev_priv(netdev), addr, false);
+	return ionic_lif_addr(netdev_priv(netdev), addr, false, true);
+}
+
+static int ionic_ndo_addr_del(struct net_device *netdev, const u8 *addr)
+{
+	return ionic_lif_addr(netdev_priv(netdev), addr, false, false);
 }
 
 static void ionic_lif_rx_mode(struct ionic_lif *lif, unsigned int rx_mode)
@@ -1081,11 +1092,12 @@ static void ionic_lif_rx_mode(struct ionic_lif *lif, unsigned int rx_mode)
 		lif->rx_mode = rx_mode;
 }
 
-static void _ionic_lif_rx_mode(struct ionic_lif *lif, unsigned int rx_mode)
+static void _ionic_lif_rx_mode(struct ionic_lif *lif, unsigned int rx_mode,
+			       bool from_ndo)
 {
 	struct ionic_deferred_work *work;
 
-	if (in_interrupt()) {
+	if (from_ndo) {
 		work = kzalloc(sizeof(*work), GFP_ATOMIC);
 		if (!work) {
 			netdev_err(lif->netdev, "%s OOM\n", __func__);
@@ -1100,7 +1112,16 @@ static void _ionic_lif_rx_mode(struct ionic_lif *lif, unsigned int rx_mode)
 	}
 }
 
-static void ionic_set_rx_mode(struct net_device *netdev)
+static void ionic_dev_uc_sync(struct net_device *netdev, bool from_ndo)
+{
+	if (from_ndo)
+		__dev_uc_sync(netdev, ionic_ndo_addr_add, ionic_ndo_addr_del);
+	else
+		__dev_uc_sync(netdev, ionic_addr_add, ionic_addr_del);
+
+}
+
+static void ionic_set_rx_mode(struct net_device *netdev, bool from_ndo)
 {
 	struct ionic_lif *lif = netdev_priv(netdev);
 	struct ionic_identity *ident;
@@ -1122,7 +1143,7 @@ static void ionic_set_rx_mode(struct net_device *netdev)
 	 *       we remove our overflow flag and check the netdev flags
 	 *       to see if we can disable NIC PROMISC
 	 */
-	__dev_uc_sync(netdev, ionic_addr_add, ionic_addr_del);
+	ionic_dev_uc_sync(netdev, from_ndo);
 	nfilters = le32_to_cpu(ident->lif.eth.max_ucast_filters);
 	if (netdev_uc_count(netdev) + 1 > nfilters) {
 		rx_mode |= IONIC_RX_MODE_F_PROMISC;
@@ -1134,7 +1155,7 @@ static void ionic_set_rx_mode(struct net_device *netdev)
 	}
 
 	/* same for multicast */
-	__dev_mc_sync(netdev, ionic_addr_add, ionic_addr_del);
+	ionic_dev_uc_sync(netdev, from_ndo);
 	nfilters = le32_to_cpu(ident->lif.eth.max_mcast_filters);
 	if (netdev_mc_count(netdev) > nfilters) {
 		rx_mode |= IONIC_RX_MODE_F_ALLMULTI;
@@ -1146,7 +1167,12 @@ static void ionic_set_rx_mode(struct net_device *netdev)
 	}
 
 	if (lif->rx_mode != rx_mode)
-		_ionic_lif_rx_mode(lif, rx_mode);
+		_ionic_lif_rx_mode(lif, rx_mode, from_ndo);
+}
+
+static void ionic_ndo_set_rx_mode(struct net_device *netdev)
+{
+	ionic_set_rx_mode(netdev, true);
 }
 
 static __le64 ionic_netdev_features_to_nic(netdev_features_t features)
@@ -1391,7 +1417,7 @@ static int ionic_start_queues_reconfig(struct ionic_lif *lif)
 	 */
 	err = ionic_txrx_init(lif);
 	mutex_unlock(&lif->queue_lock);
-	ionic_link_status_check_request(lif);
+	ionic_link_status_check_request(lif, true);
 	netif_device_attach(lif->netdev);
 
 	return err;
@@ -1720,7 +1746,7 @@ static int ionic_txrx_init(struct ionic_lif *lif)
 	if (lif->netdev->features & NETIF_F_RXHASH)
 		ionic_lif_rss_init(lif);
 
-	ionic_set_rx_mode(lif->netdev);
+	ionic_set_rx_mode(lif->netdev, false);
 
 	return 0;
 
@@ -2093,7 +2119,7 @@ static const struct net_device_ops ionic_netdev_ops = {
 	.ndo_stop               = ionic_stop,
 	.ndo_start_xmit		= ionic_start_xmit,
 	.ndo_get_stats64	= ionic_get_stats64,
-	.ndo_set_rx_mode	= ionic_set_rx_mode,
+	.ndo_set_rx_mode	= ionic_ndo_set_rx_mode,
 	.ndo_set_features	= ionic_set_features,
 	.ndo_set_mac_address	= ionic_set_mac_address,
 	.ndo_validate_addr	= eth_validate_addr,
@@ -2521,7 +2547,7 @@ static void ionic_lif_handle_fw_up(struct ionic_lif *lif)
 	}
 
 	clear_bit(IONIC_LIF_F_FW_RESET, lif->state);
-	ionic_link_status_check_request(lif);
+	ionic_link_status_check_request(lif, true);
 	netif_device_attach(lif->netdev);
 	dev_info(ionic->dev, "FW Up: LIFs restarted\n");
 
@@ -2713,7 +2739,7 @@ static int ionic_station_set(struct ionic_lif *lif)
 		 */
 		if (!ether_addr_equal(ctx.comp.lif_getattr.mac,
 				      netdev->dev_addr))
-			ionic_lif_addr(lif, netdev->dev_addr, true);
+			ionic_lif_addr(lif, netdev->dev_addr, true, true);
 	} else {
 		/* Update the netdev mac with the device's mac */
 		memcpy(addr.sa_data, ctx.comp.lif_getattr.mac, netdev->addr_len);
@@ -2730,7 +2756,7 @@ static int ionic_station_set(struct ionic_lif *lif)
 
 	netdev_dbg(lif->netdev, "adding station MAC addr %pM\n",
 		   netdev->dev_addr);
-	ionic_lif_addr(lif, netdev->dev_addr, true);
+	ionic_lif_addr(lif, netdev->dev_addr, true, true);
 
 	return 0;
 }
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.h b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
index c65a5e6c26f4..0224dfd24b8a 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.h
@@ -245,7 +245,7 @@ static inline u32 ionic_coal_usec_to_hw(struct ionic *ionic, u32 usecs)
 
 typedef void (*ionic_reset_cb)(struct ionic_lif *lif, void *arg);
 
-void ionic_link_status_check_request(struct ionic_lif *lif);
+void ionic_link_status_check_request(struct ionic_lif *lif, bool can_sleep);
 void ionic_get_stats64(struct net_device *netdev,
 		       struct rtnl_link_stats64 *ns);
 void ionic_lif_deferred_enqueue(struct ionic_deferred *def,
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_main.c b/drivers/net/ethernet/pensando/ionic/ionic_main.c
index e339216949a6..c7a67c5cda42 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_main.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c
@@ -255,8 +255,6 @@ static int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
 	struct ionic_queue *q;
 	int err = 0;
 
-	WARN_ON(in_interrupt());
-
 	if (!lif->adminqcq)
 		return -EIO;
 
@@ -328,8 +326,6 @@ int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds)
 	int done;
 	int err;
 
-	WARN_ON(in_interrupt());
-
 	/* Wait for dev cmd to complete, retrying if we get EAGAIN,
 	 * but don't wait any longer than max_seconds.
 	 */
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index c9df2e96ebe4..da6886dcac37 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -1871,18 +1871,9 @@ static int efx_ef10_try_update_nic_stats_vf(struct efx_nic *efx)
 
 	spin_unlock_bh(&efx->stats_lock);
 
-	if (in_interrupt()) {
-		/* If in atomic context, cannot update stats.  Just update the
-		 * software stats and return so the caller can continue.
-		 */
-		spin_lock_bh(&efx->stats_lock);
-		efx_update_sw_stats(efx, stats);
-		return 0;
-	}
-
 	efx_ef10_get_stat_mask(efx, mask);
 
-	rc = efx_nic_alloc_buffer(efx, &stats_buf, dma_len, GFP_ATOMIC);
+	rc = efx_nic_alloc_buffer(efx, &stats_buf, dma_len, GFP_KERNEL);
 	if (rc) {
 		spin_lock_bh(&efx->stats_lock);
 		return rc;
@@ -1938,6 +1929,18 @@ static size_t efx_ef10_update_stats_vf(struct efx_nic *efx, u64 *full_stats,
 	return efx_ef10_update_stats_common(efx, full_stats, core_stats);
 }
 
+static size_t efx_ef10_update_stats_atomic_vf(struct efx_nic *efx, u64 *full_stats,
+					      struct rtnl_link_stats64 *core_stats)
+{
+	struct efx_ef10_nic_data *nic_data = efx->nic_data;
+
+	/* In atomic context, cannot update HW stats.  Just update the
+	 * software stats and return so the caller can continue.
+	 */
+	efx_update_sw_stats(efx, nic_data->stats);
+	return efx_ef10_update_stats_common(efx, full_stats, core_stats);
+}
+
 static void efx_ef10_push_irq_moderation(struct efx_channel *channel)
 {
 	struct efx_nic *efx = channel->efx;
@@ -3998,6 +4001,7 @@ const struct efx_nic_type efx_hunt_a0_vf_nic_type = {
 	.finish_flr = efx_port_dummy_op_void,
 	.describe_stats = efx_ef10_describe_stats,
 	.update_stats = efx_ef10_update_stats_vf,
+	.update_stats_atomic = efx_ef10_update_stats_atomic_vf,
 	.start_stats = efx_port_dummy_op_void,
 	.pull_stats = efx_port_dummy_op_void,
 	.stop_stats = efx_port_dummy_op_void,
diff --git a/drivers/net/ethernet/sfc/efx_common.c b/drivers/net/ethernet/sfc/efx_common.c
index c256db241570..72a3f0e09f52 100644
--- a/drivers/net/ethernet/sfc/efx_common.c
+++ b/drivers/net/ethernet/sfc/efx_common.c
@@ -602,7 +602,7 @@ void efx_net_stats(struct net_device *net_dev, struct rtnl_link_stats64 *stats)
 	struct efx_nic *efx = netdev_priv(net_dev);
 
 	spin_lock_bh(&efx->stats_lock);
-	efx->type->update_stats(efx, NULL, stats);
+	efx_nic_update_stats_atomic(efx, NULL, stats);
 	spin_unlock_bh(&efx->stats_lock);
 }
 
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index 47aa753e64bd..9f7dfdf708cf 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -1172,6 +1172,9 @@ struct efx_udp_tunnel {
  * @describe_stats: Describe statistics for ethtool
  * @update_stats: Update statistics not provided by event handling.
  *	Either argument may be %NULL.
+ * @update_stats_atomic: Update statistics while in atomic context, if that
+ *	is more limiting than @update_stats.  Otherwise, leave %NULL and
+ *	driver core will call @update_stats.
  * @start_stats: Start the regular fetching of statistics
  * @pull_stats: Pull stats from the NIC and wait until they arrive.
  * @stop_stats: Stop the regular fetching of statistics
@@ -1316,6 +1319,8 @@ struct efx_nic_type {
 	size_t (*describe_stats)(struct efx_nic *efx, u8 *names);
 	size_t (*update_stats)(struct efx_nic *efx, u64 *full_stats,
 			       struct rtnl_link_stats64 *core_stats);
+	size_t (*update_stats_atomic)(struct efx_nic *efx, u64 *full_stats,
+				      struct rtnl_link_stats64 *core_stats);
 	void (*start_stats)(struct efx_nic *efx);
 	void (*pull_stats)(struct efx_nic *efx);
 	void (*stop_stats)(struct efx_nic *efx);
diff --git a/drivers/net/ethernet/sfc/nic_common.h b/drivers/net/ethernet/sfc/nic_common.h
index 82271f0b8627..b9cafe9cd568 100644
--- a/drivers/net/ethernet/sfc/nic_common.h
+++ b/drivers/net/ethernet/sfc/nic_common.h
@@ -244,6 +244,13 @@ void efx_nic_update_stats(const struct efx_hw_stat_desc *desc, size_t count,
 			  const unsigned long *mask, u64 *stats,
 			  const void *dma_buf, bool accumulate);
 void efx_nic_fix_nodesc_drop_stat(struct efx_nic *efx, u64 *stat);
+static inline size_t efx_nic_update_stats_atomic(struct efx_nic *efx, u64 *full_stats,
+						 struct rtnl_link_stats64 *core_stats)
+{
+	if (efx->type->update_stats_atomic)
+		return efx->type->update_stats_atomic(efx, full_stats, core_stats);
+	return efx->type->update_stats(efx, full_stats, core_stats);
+}
 
 #define EFX_MAX_FLUSH_TIME 5000
 
diff --git a/drivers/net/ethernet/sun/sunbmac.c b/drivers/net/ethernet/sun/sunbmac.c
index 34fdbc6d6031..c646575e79d5 100644
--- a/drivers/net/ethernet/sun/sunbmac.c
+++ b/drivers/net/ethernet/sun/sunbmac.c
@@ -209,13 +209,13 @@ static void bigmac_clean_rings(struct bigmac *bp)
 	}
 }
 
-static void bigmac_init_rings(struct bigmac *bp, int from_irq)
+static void bigmac_init_rings(struct bigmac *bp, bool non_blocking)
 {
 	struct bmac_init_block *bb = bp->bmac_block;
 	int i;
 	gfp_t gfp_flags = GFP_KERNEL;
 
-	if (from_irq || in_interrupt())
+	if (non_blocking)
 		gfp_flags = GFP_ATOMIC;
 
 	bp->rx_new = bp->rx_old = bp->tx_new = bp->tx_old = 0;
@@ -489,7 +489,7 @@ static void bigmac_tcvr_init(struct bigmac *bp)
 	}
 }
 
-static int bigmac_init_hw(struct bigmac *, int);
+static int bigmac_init_hw(struct bigmac *, bool);
 
 static int try_next_permutation(struct bigmac *bp, void __iomem *tregs)
 {
@@ -549,7 +549,7 @@ static void bigmac_timer(struct timer_list *t)
 				if (ret == -1) {
 					printk(KERN_ERR "%s: Link down, cable problem?\n",
 					       bp->dev->name);
-					ret = bigmac_init_hw(bp, 0);
+					ret = bigmac_init_hw(bp, true);
 					if (ret) {
 						printk(KERN_ERR "%s: Error, cannot re-init the "
 						       "BigMAC.\n", bp->dev->name);
@@ -617,7 +617,7 @@ static void bigmac_begin_auto_negotiation(struct bigmac *bp)
 	add_timer(&bp->bigmac_timer);
 }
 
-static int bigmac_init_hw(struct bigmac *bp, int from_irq)
+static int bigmac_init_hw(struct bigmac *bp, bool non_blocking)
 {
 	void __iomem *gregs        = bp->gregs;
 	void __iomem *cregs        = bp->creg;
@@ -635,7 +635,7 @@ static int bigmac_init_hw(struct bigmac *bp, int from_irq)
 	qec_init(bp);
 
 	/* Alloc and reset the tx/rx descriptor chains. */
-	bigmac_init_rings(bp, from_irq);
+	bigmac_init_rings(bp, non_blocking);
 
 	/* Initialize the PHY. */
 	bigmac_tcvr_init(bp);
@@ -749,7 +749,7 @@ static void bigmac_is_medium_rare(struct bigmac *bp, u32 qec_status, u32 bmac_st
 	}
 
 	printk(" RESET\n");
-	bigmac_init_hw(bp, 1);
+	bigmac_init_hw(bp, true);
 }
 
 /* BigMAC transmit complete service routines. */
@@ -921,7 +921,7 @@ static int bigmac_open(struct net_device *dev)
 		return ret;
 	}
 	timer_setup(&bp->bigmac_timer, bigmac_timer, 0);
-	ret = bigmac_init_hw(bp, 0);
+	ret = bigmac_init_hw(bp, false);
 	if (ret)
 		free_irq(dev->irq, bp);
 	return ret;
@@ -945,7 +945,7 @@ static void bigmac_tx_timeout(struct net_device *dev, unsigned int txqueue)
 {
 	struct bigmac *bp = netdev_priv(dev);
 
-	bigmac_init_hw(bp, 0);
+	bigmac_init_hw(bp, true);
 	netif_wake_queue(dev);
 }