These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

2 files changed, 13 insertions, 19 deletions

diff --git a/kernel/drivers/net/ethernet/nvidia/Kconfig b/kernel/drivers/net/ethernet/nvidia/Kconfig
index ace19e7f6..4efc9fe84 100644
--- a/kernel/drivers/net/ethernet/nvidia/Kconfig
+++ b/kernel/drivers/net/ethernet/nvidia/Kconfig
@@ -7,9 +7,7 @@ config NET_VENDOR_NVIDIA
 	default y
 	depends on PCI
 	---help---
-	  If you have a network (Ethernet) card belonging to this class, say Y
-	  and read the Ethernet-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>.
+	  If you have a network (Ethernet) card belonging to this class, say Y.
 
 	  Note that the answer to this question doesn't directly affect the
 	  kernel: saying N will just cause the configurator to skip all
@@ -22,9 +20,7 @@ config FORCEDETH
 	tristate "nForce Ethernet support"
 	depends on PCI
 	---help---
-	  If you have a network (Ethernet) controller of this type, say Y and
-	  read the Ethernet-HOWTO, available from
-	  <http://www.tldp.org/docs.html#howto>.
+	  If you have a network (Ethernet) controller of this type, say Y here.
 
 	  To compile this driver as a module, choose M here. The module
 	  will be called forcedeth.
diff --git a/kernel/drivers/net/ethernet/nvidia/forcedeth.c b/kernel/drivers/net/ethernet/nvidia/forcedeth.c
index a41bb5e6b..75e88f4c1 100644
--- a/kernel/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/kernel/drivers/net/ethernet/nvidia/forcedeth.c
@@ -4076,6 +4076,8 @@ static void nv_do_nic_poll(unsigned long data)
 	struct fe_priv *np = netdev_priv(dev);
 	u8 __iomem *base = get_hwbase(dev);
 	u32 mask = 0;
+	unsigned long flags;
+	unsigned int irq = 0;
 
 	/*
 	 * First disable irq(s) and then
@@ -4085,25 +4087,27 @@ static void nv_do_nic_poll(unsigned long data)
 
 	if (!using_multi_irqs(dev)) {
 		if (np->msi_flags & NV_MSI_X_ENABLED)
-			disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
+			irq = np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector;
 		else
-			disable_irq_lockdep(np->pci_dev->irq);
+			irq = np->pci_dev->irq;
 		mask = np->irqmask;
 	} else {
 		if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
-			disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
+			irq = np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector;
 			mask |= NVREG_IRQ_RX_ALL;
 		}
 		if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
-			disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
+			irq = np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector;
 			mask |= NVREG_IRQ_TX_ALL;
 		}
 		if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
-			disable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
+			irq = np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector;
 			mask |= NVREG_IRQ_OTHER;
 		}
 	}
-	/* disable_irq() contains synchronize_irq, thus no irq handler can run now */
+
+	disable_irq_nosync_lockdep_irqsave(irq, &flags);
+	synchronize_irq(irq);
 
 	if (np->recover_error) {
 		np->recover_error = 0;
@@ -4156,28 +4160,22 @@ static void nv_do_nic_poll(unsigned long data)
 			nv_nic_irq_optimized(0, dev);
 		else
 			nv_nic_irq(0, dev);
-		if (np->msi_flags & NV_MSI_X_ENABLED)
-			enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_ALL].vector);
-		else
-			enable_irq_lockdep(np->pci_dev->irq);
 	} else {
 		if (np->nic_poll_irq & NVREG_IRQ_RX_ALL) {
 			np->nic_poll_irq &= ~NVREG_IRQ_RX_ALL;
 			nv_nic_irq_rx(0, dev);
-			enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_RX].vector);
 		}
 		if (np->nic_poll_irq & NVREG_IRQ_TX_ALL) {
 			np->nic_poll_irq &= ~NVREG_IRQ_TX_ALL;
 			nv_nic_irq_tx(0, dev);
-			enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_TX].vector);
 		}
 		if (np->nic_poll_irq & NVREG_IRQ_OTHER) {
 			np->nic_poll_irq &= ~NVREG_IRQ_OTHER;
 			nv_nic_irq_other(0, dev);
-			enable_irq_lockdep(np->msi_x_entry[NV_MSI_X_VECTOR_OTHER].vector);
 		}
 	}
 
+	enable_irq_lockdep_irqrestore(irq, &flags);
 }
 
 #ifdef CONFIG_NET_POLL_CONTROLLER