Merge branch 'linus' into stackprotector

Conflicts:
	arch/x86/include/asm/pda.h
	kernel/fork.c

4 files changed, 89 insertions, 88 deletions

diff --git a/drivers/net/qlge/qlge.h b/drivers/net/qlge/qlge.h
index 38116f9d4163..ba2e1c5b6bcf 100644
--- a/drivers/net/qlge/qlge.h
+++ b/drivers/net/qlge/qlge.h
@@ -1375,7 +1375,6 @@ struct ql_adapter {
 	spinlock_t adapter_lock;
 	spinlock_t hw_lock;
 	spinlock_t stats_lock;
-	spinlock_t legacy_lock;	/* used for maintaining legacy intr sync */
 
 	/* PCI Bus Relative Register Addresses */
 	void __iomem *reg_base;
@@ -1399,8 +1398,6 @@ struct ql_adapter {
 	struct msix_entry *msi_x_entry;
 	struct intr_context intr_context[MAX_RX_RINGS];
 
-	int (*legacy_check) (struct ql_adapter *);
-
 	int tx_ring_count;	/* One per online CPU. */
 	u32 rss_ring_first_cq_id;/* index of first inbound (rss) rx_ring */
 	u32 rss_ring_count;	/* One per online CPU.  */
@@ -1502,7 +1499,7 @@ void ql_mpi_work(struct work_struct *work);
 void ql_mpi_reset_work(struct work_struct *work);
 int ql_wait_reg_rdy(struct ql_adapter *qdev, u32 reg, u32 bit, u32 ebit);
 void ql_queue_asic_error(struct ql_adapter *qdev);
-void ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr);
+u32 ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr);
 void ql_set_ethtool_ops(struct net_device *ndev);
 int ql_read_xgmac_reg64(struct ql_adapter *qdev, u32 reg, u64 *data);
 
diff --git a/drivers/net/qlge/qlge_ethtool.c b/drivers/net/qlge/qlge_ethtool.c
index b62fbd4bf00f..eefb81b13758 100644
--- a/drivers/net/qlge/qlge_ethtool.c
+++ b/drivers/net/qlge/qlge_ethtool.c
@@ -97,7 +97,7 @@ exit:
 	return status;
 }
 
-void ql_update_stats(struct ql_adapter *qdev)
+static void ql_update_stats(struct ql_adapter *qdev)
 {
 	u32 i;
 	u64 data;
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index 4b2caa6b7ac5..718a7bd0cd1a 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -336,12 +336,11 @@ static int ql_set_mac_addr_reg(struct ql_adapter *qdev, u8 *addr, u32 type,
 			    (addr[5]);
 
 			QPRINTK(qdev, IFUP, INFO,
-				"Adding %s address %02x:%02x:%02x:%02x:%02x:%02x"
+				"Adding %s address %pM"
 				" at index %d in the CAM.\n",
 				((type ==
 				  MAC_ADDR_TYPE_MULTI_MAC) ? "MULTICAST" :
-				 "UNICAST"), addr[0], addr[1], addr[2], addr[3],
-				addr[4], addr[5], index);
+				 "UNICAST"), addr, index);
 
 			status =
 			    ql_wait_reg_rdy(qdev,
@@ -577,41 +576,53 @@ static void ql_disable_interrupts(struct ql_adapter *qdev)
  * incremented everytime we queue a worker and decremented everytime
  * a worker finishes.  Once it hits zero we enable the interrupt.
  */
-void ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
+u32 ql_enable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
 {
-	if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags)))
+	u32 var = 0;
+	unsigned long hw_flags = 0;
+	struct intr_context *ctx = qdev->intr_context + intr;
+
+	if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr)) {
+		/* Always enable if we're MSIX multi interrupts and
+		 * it's not the default (zeroeth) interrupt.
+		 */
 		ql_write32(qdev, INTR_EN,
-			   qdev->intr_context[intr].intr_en_mask);
-	else {
-		if (qdev->legacy_check)
-			spin_lock(&qdev->legacy_lock);
-		if (atomic_dec_and_test(&qdev->intr_context[intr].irq_cnt)) {
-			QPRINTK(qdev, INTR, ERR, "Enabling interrupt %d.\n",
-				intr);
-			ql_write32(qdev, INTR_EN,
-				   qdev->intr_context[intr].intr_en_mask);
-		} else {
-			QPRINTK(qdev, INTR, ERR,
-				"Skip enable, other queue(s) are active.\n");
-		}
-		if (qdev->legacy_check)
-			spin_unlock(&qdev->legacy_lock);
+			   ctx->intr_en_mask);
+		var = ql_read32(qdev, STS);
+		return var;
 	}
+
+	spin_lock_irqsave(&qdev->hw_lock, hw_flags);
+	if (atomic_dec_and_test(&ctx->irq_cnt)) {
+		ql_write32(qdev, INTR_EN,
+			   ctx->intr_en_mask);
+		var = ql_read32(qdev, STS);
+	}
+	spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
+	return var;
 }
 
 static u32 ql_disable_completion_interrupt(struct ql_adapter *qdev, u32 intr)
 {
 	u32 var = 0;
+	unsigned long hw_flags;
+	struct intr_context *ctx;
 
-	if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags)))
-		goto exit;
-	else if (!atomic_read(&qdev->intr_context[intr].irq_cnt)) {
+	/* HW disables for us if we're MSIX multi interrupts and
+	 * it's not the default (zeroeth) interrupt.
+	 */
+	if (likely(test_bit(QL_MSIX_ENABLED, &qdev->flags) && intr))
+		return 0;
+
+	ctx = qdev->intr_context + intr;
+	spin_lock_irqsave(&qdev->hw_lock, hw_flags);
+	if (!atomic_read(&ctx->irq_cnt)) {
 		ql_write32(qdev, INTR_EN,
-			   qdev->intr_context[intr].intr_dis_mask);
+		ctx->intr_dis_mask);
 		var = ql_read32(qdev, STS);
 	}
-	atomic_inc(&qdev->intr_context[intr].irq_cnt);
-exit:
+	atomic_inc(&ctx->irq_cnt);
+	spin_unlock_irqrestore(&qdev->hw_lock, hw_flags);
 	return var;
 }
 
@@ -623,13 +634,15 @@ static void ql_enable_all_completion_interrupts(struct ql_adapter *qdev)
 		 * and enables only if the result is zero.
 		 * So we precharge it here.
 		 */
-		atomic_set(&qdev->intr_context[i].irq_cnt, 1);
+		if (unlikely(!test_bit(QL_MSIX_ENABLED, &qdev->flags) ||
+			i == 0))
+			atomic_set(&qdev->intr_context[i].irq_cnt, 1);
 		ql_enable_completion_interrupt(qdev, i);
 	}
 
 }
 
-int ql_read_flash_word(struct ql_adapter *qdev, int offset, u32 *data)
+static int ql_read_flash_word(struct ql_adapter *qdev, int offset, u32 *data)
 {
 	int status = 0;
 	/* wait for reg to come ready */
@@ -819,7 +832,7 @@ end:
 }
 
 /* Get the next large buffer. */
-struct bq_desc *ql_get_curr_lbuf(struct rx_ring *rx_ring)
+static struct bq_desc *ql_get_curr_lbuf(struct rx_ring *rx_ring)
 {
 	struct bq_desc *lbq_desc = &rx_ring->lbq[rx_ring->lbq_curr_idx];
 	rx_ring->lbq_curr_idx++;
@@ -830,7 +843,7 @@ struct bq_desc *ql_get_curr_lbuf(struct rx_ring *rx_ring)
 }
 
 /* Get the next small buffer. */
-struct bq_desc *ql_get_curr_sbuf(struct rx_ring *rx_ring)
+static struct bq_desc *ql_get_curr_sbuf(struct rx_ring *rx_ring)
 {
 	struct bq_desc *sbq_desc = &rx_ring->sbq[rx_ring->sbq_curr_idx];
 	rx_ring->sbq_curr_idx++;
@@ -1153,7 +1166,7 @@ map_error:
 	return NETDEV_TX_BUSY;
 }
 
-void ql_realign_skb(struct sk_buff *skb, int len)
+static void ql_realign_skb(struct sk_buff *skb, int len)
 {
 	void *temp_addr = skb->data;
 
@@ -1438,7 +1451,6 @@ static void ql_process_mac_rx_intr(struct ql_adapter *qdev,
 			"Passing a normal packet upstream.\n");
 		netif_rx(skb);
 	}
-	ndev->last_rx = jiffies;
 }
 
 /* Process an outbound completion from an rx ring. */
@@ -1635,7 +1647,7 @@ static int ql_napi_poll_msix(struct napi_struct *napi, int budget)
 		rx_ring->cq_id);
 
 	if (work_done < budget) {
-		__netif_rx_complete(qdev->ndev, napi);
+		__netif_rx_complete(napi);
 		ql_enable_completion_interrupt(qdev, rx_ring->irq);
 	}
 	return work_done;
@@ -1720,24 +1732,10 @@ static irqreturn_t qlge_msix_tx_isr(int irq, void *dev_id)
 static irqreturn_t qlge_msix_rx_isr(int irq, void *dev_id)
 {
 	struct rx_ring *rx_ring = dev_id;
-	struct ql_adapter *qdev = rx_ring->qdev;
-	netif_rx_schedule(qdev->ndev, &rx_ring->napi);
+	netif_rx_schedule(&rx_ring->napi);
 	return IRQ_HANDLED;
 }
 
-/* We check here to see if we're already handling a legacy
- * interrupt.  If we are, then it must belong to another
- * chip with which we're sharing the interrupt line.
- */
-int ql_legacy_check(struct ql_adapter *qdev)
-{
-	int err;
-	spin_lock(&qdev->legacy_lock);
-	err = atomic_read(&qdev->intr_context[0].irq_cnt);
-	spin_unlock(&qdev->legacy_lock);
-	return err;
-}
-
 /* This handles a fatal error, MPI activity, and the default
  * rx_ring in an MSI-X multiple vector environment.
  * In MSI/Legacy environment it also process the rest of
@@ -1752,12 +1750,15 @@ static irqreturn_t qlge_isr(int irq, void *dev_id)
 	int i;
 	int work_done = 0;
 
-	if (qdev->legacy_check && qdev->legacy_check(qdev)) {
-		QPRINTK(qdev, INTR, INFO, "Already busy, not our interrupt.\n");
-		return IRQ_NONE;	/* Not our interrupt */
+	spin_lock(&qdev->hw_lock);
+	if (atomic_read(&qdev->intr_context[0].irq_cnt)) {
+		QPRINTK(qdev, INTR, DEBUG, "Shared Interrupt, Not ours!\n");
+		spin_unlock(&qdev->hw_lock);
+		return IRQ_NONE;
 	}
+	spin_unlock(&qdev->hw_lock);
 
-	var = ql_read32(qdev, STS);
+	var = ql_disable_completion_interrupt(qdev, intr_context->intr);
 
 	/*
 	 * Check for fatal error.
@@ -1817,12 +1818,12 @@ static irqreturn_t qlge_isr(int irq, void *dev_id)
 							      &rx_ring->rx_work,
 							      0);
 				else
-					netif_rx_schedule(qdev->ndev,
-							  &rx_ring->napi);
+					netif_rx_schedule(&rx_ring->napi);
 				work_done++;
 			}
 		}
 	}
+	ql_enable_completion_interrupt(qdev, intr_context->intr);
 	return work_done ? IRQ_HANDLED : IRQ_NONE;
 }
 
@@ -2066,7 +2067,7 @@ err:
 	return -ENOMEM;
 }
 
-void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
+static void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
 {
 	int i;
 	struct bq_desc *lbq_desc;
@@ -2129,7 +2130,7 @@ mem_error:
 	return -ENOMEM;
 }
 
-void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
+static void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
 {
 	int i;
 	struct bq_desc *sbq_desc;
@@ -2464,7 +2465,7 @@ static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
 	rx_ring->sbq_base_indirect_dma = shadow_reg_dma;
 
 	/* PCI doorbell mem area + 0x00 for consumer index register */
-	rx_ring->cnsmr_idx_db_reg = (u32 *) doorbell_area;
+	rx_ring->cnsmr_idx_db_reg = (u32 __iomem *) doorbell_area;
 	rx_ring->cnsmr_idx = 0;
 	rx_ring->curr_entry = rx_ring->cq_base;
 
@@ -2472,10 +2473,10 @@ static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
 	rx_ring->valid_db_reg = doorbell_area + 0x04;
 
 	/* PCI doorbell mem area + 0x18 for large buffer consumer */
-	rx_ring->lbq_prod_idx_db_reg = (u32 *) (doorbell_area + 0x18);
+	rx_ring->lbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x18);
 
 	/* PCI doorbell mem area + 0x1c */
-	rx_ring->sbq_prod_idx_db_reg = (u32 *) (doorbell_area + 0x1c);
+	rx_ring->sbq_prod_idx_db_reg = (u32 __iomem *) (doorbell_area + 0x1c);
 
 	memset((void *)cqicb, 0, sizeof(struct cqicb));
 	cqicb->msix_vect = rx_ring->irq;
@@ -2606,7 +2607,7 @@ static int ql_start_tx_ring(struct ql_adapter *qdev, struct tx_ring *tx_ring)
 	 * Assign doorbell registers for this tx_ring.
 	 */
 	/* TX PCI doorbell mem area for tx producer index */
-	tx_ring->prod_idx_db_reg = (u32 *) doorbell_area;
+	tx_ring->prod_idx_db_reg = (u32 __iomem *) doorbell_area;
 	tx_ring->prod_idx = 0;
 	/* TX PCI doorbell mem area + 0x04 */
 	tx_ring->valid_db_reg = doorbell_area + 0x04;
@@ -2701,8 +2702,6 @@ msi:
 		}
 	}
 	irq_type = LEG_IRQ;
-	spin_lock_init(&qdev->legacy_lock);
-	qdev->legacy_check = ql_legacy_check;
 	QPRINTK(qdev, IFUP, DEBUG, "Running with legacy interrupts.\n");
 }
 
@@ -3124,11 +3123,7 @@ static void ql_display_dev_info(struct net_device *ndev)
 		qdev->chip_rev_id >> 4 & 0x0000000f,
 		qdev->chip_rev_id >> 8 & 0x0000000f,
 		qdev->chip_rev_id >> 12 & 0x0000000f);
-	QPRINTK(qdev, PROBE, INFO,
-		"MAC address %02x:%02x:%02x:%02x:%02x:%02x\n",
-		ndev->dev_addr[0], ndev->dev_addr[1],
-		ndev->dev_addr[2], ndev->dev_addr[3], ndev->dev_addr[4],
-		ndev->dev_addr[5]);
+	QPRINTK(qdev, PROBE, INFO, "MAC address %pM\n", ndev->dev_addr);
 }
 
 static int ql_adapter_down(struct ql_adapter *qdev)
@@ -3153,7 +3148,7 @@ static int ql_adapter_down(struct ql_adapter *qdev)
 	 * a workqueue only if it's a single interrupt
 	 * environment (MSI/Legacy).
 	 */
-	for (i = 1; i > qdev->rx_ring_count; i++) {
+	for (i = 1; i < qdev->rx_ring_count; i++) {
 		rx_ring = &qdev->rx_ring[i];
 		/* Only the RSS rings use NAPI on multi irq
 		 * environment.  Outbound completion processing
@@ -3523,6 +3518,7 @@ static int qlge_set_mac_address(struct net_device *ndev, void *p)
 {
 	struct ql_adapter *qdev = (struct ql_adapter *)netdev_priv(ndev);
 	struct sockaddr *addr = p;
+	int ret = 0;
 
 	if (netif_running(ndev))
 		return -EBUSY;
@@ -3535,11 +3531,11 @@ static int qlge_set_mac_address(struct net_device *ndev, void *p)
 	if (ql_set_mac_addr_reg(qdev, (u8 *) ndev->dev_addr,
 			MAC_ADDR_TYPE_CAM_MAC, qdev->func)) {/* Unicast */
 		QPRINTK(qdev, HW, ERR, "Failed to load MAC address.\n");
-		return -1;
+		ret = -1;
 	}
 	spin_unlock(&qdev->hw_lock);
 
-	return 0;
+	return ret;
 }
 
 static void qlge_tx_timeout(struct net_device *ndev)
@@ -3589,7 +3585,7 @@ static void ql_release_all(struct pci_dev *pdev)
 		qdev->q_workqueue = NULL;
 	}
 	if (qdev->reg_base)
-		iounmap((void *)qdev->reg_base);
+		iounmap(qdev->reg_base);
 	if (qdev->doorbell_area)
 		iounmap(qdev->doorbell_area);
 	pci_release_regions(pdev);
@@ -3718,6 +3714,22 @@ err_out:
 	return err;
 }
 
+
+static const struct net_device_ops qlge_netdev_ops = {
+	.ndo_open		= qlge_open,
+	.ndo_stop		= qlge_close,
+	.ndo_start_xmit		= qlge_send,
+	.ndo_change_mtu		= qlge_change_mtu,
+	.ndo_get_stats		= qlge_get_stats,
+	.ndo_set_multicast_list = qlge_set_multicast_list,
+	.ndo_set_mac_address	= qlge_set_mac_address,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_tx_timeout		= qlge_tx_timeout,
+	.ndo_vlan_rx_register	= ql_vlan_rx_register,
+	.ndo_vlan_rx_add_vid	= ql_vlan_rx_add_vid,
+	.ndo_vlan_rx_kill_vid	= ql_vlan_rx_kill_vid,
+};
+
 static int __devinit qlge_probe(struct pci_dev *pdev,
 				const struct pci_device_id *pci_entry)
 {
@@ -3755,19 +3767,11 @@ static int __devinit qlge_probe(struct pci_dev *pdev,
 	 */
 	ndev->tx_queue_len = qdev->tx_ring_size;
 	ndev->irq = pdev->irq;
-	ndev->open = qlge_open;
-	ndev->stop = qlge_close;
-	ndev->hard_start_xmit = qlge_send;
+
+	ndev->netdev_ops = &qlge_netdev_ops;
 	SET_ETHTOOL_OPS(ndev, &qlge_ethtool_ops);
-	ndev->change_mtu = qlge_change_mtu;
-	ndev->get_stats = qlge_get_stats;
-	ndev->set_multicast_list = qlge_set_multicast_list;
-	ndev->set_mac_address = qlge_set_mac_address;
-	ndev->tx_timeout = qlge_tx_timeout;
 	ndev->watchdog_timeo = 10 * HZ;
-	ndev->vlan_rx_register = ql_vlan_rx_register;
-	ndev->vlan_rx_add_vid = ql_vlan_rx_add_vid;
-	ndev->vlan_rx_kill_vid = ql_vlan_rx_kill_vid;
+
 	err = register_netdev(ndev);
 	if (err) {
 		dev_err(&pdev->dev, "net device registration failed.\n");
diff --git a/drivers/net/qlge/qlge_mpi.c b/drivers/net/qlge/qlge_mpi.c
index 24fe344bcf1f..fa31891b6e62 100644
--- a/drivers/net/qlge/qlge_mpi.c
+++ b/drivers/net/qlge/qlge_mpi.c
@@ -19,7 +19,7 @@ exit:
 	return status;
 }
 
-int ql_get_mb_sts(struct ql_adapter *qdev, struct mbox_params *mbcp)
+static int ql_get_mb_sts(struct ql_adapter *qdev, struct mbox_params *mbcp)
 {
 	int i, status;