rb532: add 4.14 support

Signed-off-by: Roman Yeryomin <roman@advem.lv>

1 files changed, 156 insertions, 0 deletions

diff --git a/target/linux/rb532/patches-4.14/106-dont-use-rx-overflow-and-tx-underflow-interrupts.patch b/target/linux/rb532/patches-4.14/106-dont-use-rx-overflow-and-tx-underflow-interrupts.patch
new file mode 100644
index 0000000000..e75079b12f
--- /dev/null
+++ b/target/linux/rb532/patches-4.14/106-dont-use-rx-overflow-and-tx-underflow-interrupts.patch
@@ -0,0 +1,156 @@
+--- a/drivers/net/ethernet/korina.c
++++ b/drivers/net/ethernet/korina.c
+@@ -122,8 +122,6 @@ struct korina_private {
+ 
+ 	int rx_irq;
+ 	int tx_irq;
+-	int ovr_irq;
+-	int und_irq;
+ 
+ 	spinlock_t lock;        /* NIC xmit lock */
+ 
+@@ -890,8 +888,6 @@ static void korina_restart_task(struct w
+ 	 */
+ 	disable_irq(lp->rx_irq);
+ 	disable_irq(lp->tx_irq);
+-	disable_irq(lp->ovr_irq);
+-	disable_irq(lp->und_irq);
+ 
+ 	writel(readl(&lp->tx_dma_regs->dmasm) |
+ 				DMA_STAT_FINI | DMA_STAT_ERR,
+@@ -910,40 +906,10 @@ static void korina_restart_task(struct w
+ 	}
+ 	korina_multicast_list(dev);
+ 
+-	enable_irq(lp->und_irq);
+-	enable_irq(lp->ovr_irq);
+ 	enable_irq(lp->tx_irq);
+ 	enable_irq(lp->rx_irq);
+ }
+ 
+-static void korina_clear_and_restart(struct net_device *dev, u32 value)
+-{
+-	struct korina_private *lp = netdev_priv(dev);
+-
+-	netif_stop_queue(dev);
+-	writel(value, &lp->eth_regs->ethintfc);
+-	schedule_work(&lp->restart_task);
+-}
+-
+-/* Ethernet Tx Underflow interrupt */
+-static irqreturn_t korina_und_interrupt(int irq, void *dev_id)
+-{
+-	struct net_device *dev = dev_id;
+-	struct korina_private *lp = netdev_priv(dev);
+-	unsigned int und;
+-
+-	spin_lock(&lp->lock);
+-
+-	und = readl(&lp->eth_regs->ethintfc);
+-
+-	if (und & ETH_INT_FC_UND)
+-		korina_clear_and_restart(dev, und & ~ETH_INT_FC_UND);
+-
+-	spin_unlock(&lp->lock);
+-
+-	return IRQ_HANDLED;
+-}
+-
+ static void korina_tx_timeout(struct net_device *dev)
+ {
+ 	struct korina_private *lp = netdev_priv(dev);
+@@ -951,25 +917,6 @@ static void korina_tx_timeout(struct net
+ 	schedule_work(&lp->restart_task);
+ }
+ 
+-/* Ethernet Rx Overflow interrupt */
+-static irqreturn_t
+-korina_ovr_interrupt(int irq, void *dev_id)
+-{
+-	struct net_device *dev = dev_id;
+-	struct korina_private *lp = netdev_priv(dev);
+-	unsigned int ovr;
+-
+-	spin_lock(&lp->lock);
+-	ovr = readl(&lp->eth_regs->ethintfc);
+-
+-	if (ovr & ETH_INT_FC_OVR)
+-		korina_clear_and_restart(dev, ovr & ~ETH_INT_FC_OVR);
+-
+-	spin_unlock(&lp->lock);
+-
+-	return IRQ_HANDLED;
+-}
+-
+ #ifdef CONFIG_NET_POLL_CONTROLLER
+ static void korina_poll_controller(struct net_device *dev)
+ {
+@@ -992,8 +939,7 @@ static int korina_open(struct net_device
+ 	}
+ 
+ 	/* Install the interrupt handler
+-	 * that handles the Done Finished
+-	 * Ovr and Und Events */
++	 * that handles the Done Finished */
+ 	ret = request_irq(lp->rx_irq, korina_rx_dma_interrupt,
+ 			0, "Korina ethernet Rx", dev);
+ 	if (ret < 0) {
+@@ -1009,31 +955,10 @@ static int korina_open(struct net_device
+ 		goto err_free_rx_irq;
+ 	}
+ 
+-	/* Install handler for overrun error. */
+-	ret = request_irq(lp->ovr_irq, korina_ovr_interrupt,
+-			0, "Ethernet Overflow", dev);
+-	if (ret < 0) {
+-		printk(KERN_ERR "%s: unable to get OVR IRQ %d\n",
+-		    dev->name, lp->ovr_irq);
+-		goto err_free_tx_irq;
+-	}
+-
+-	/* Install handler for underflow error. */
+-	ret = request_irq(lp->und_irq, korina_und_interrupt,
+-			0, "Ethernet Underflow", dev);
+-	if (ret < 0) {
+-		printk(KERN_ERR "%s: unable to get UND IRQ %d\n",
+-		    dev->name, lp->und_irq);
+-		goto err_free_ovr_irq;
+-	}
+ 	mod_timer(&lp->media_check_timer, jiffies + 1);
+ out:
+ 	return ret;
+ 
+-err_free_ovr_irq:
+-	free_irq(lp->ovr_irq, dev);
+-err_free_tx_irq:
+-	free_irq(lp->tx_irq, dev);
+ err_free_rx_irq:
+ 	free_irq(lp->rx_irq, dev);
+ err_release:
+@@ -1051,8 +976,6 @@ static int korina_close(struct net_devic
+ 	/* Disable interrupts */
+ 	disable_irq(lp->rx_irq);
+ 	disable_irq(lp->tx_irq);
+-	disable_irq(lp->ovr_irq);
+-	disable_irq(lp->und_irq);
+ 
+ 	korina_abort_tx(dev);
+ 	tmp = readl(&lp->tx_dma_regs->dmasm);
+@@ -1072,8 +995,6 @@ static int korina_close(struct net_devic
+ 
+ 	free_irq(lp->rx_irq, dev);
+ 	free_irq(lp->tx_irq, dev);
+-	free_irq(lp->ovr_irq, dev);
+-	free_irq(lp->und_irq, dev);
+ 
+ 	return 0;
+ }
+@@ -1113,8 +1034,6 @@ static int korina_probe(struct platform_
+ 
+ 	lp->rx_irq = platform_get_irq_byname(pdev, "korina_rx");
+ 	lp->tx_irq = platform_get_irq_byname(pdev, "korina_tx");
+-	lp->ovr_irq = platform_get_irq_byname(pdev, "korina_ovr");
+-	lp->und_irq = platform_get_irq_byname(pdev, "korina_und");
+ 
+ 	r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "korina_regs");
+ 	dev->base_addr = r->start;