sh_eth: Change handling of IRQ

Handling of IRQ of the SH7763/SH7764 CPU which sh_eth supported was
changed.
This revises it for this change.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 3 deletions

diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 7f8e514eb5e9..7b1882765a0c 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -687,6 +687,7 @@ static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
 {
         struct net_device *ndev = netdev;
         struct sh_eth_private *mdp = netdev_priv(ndev);
+        irqreturn_t ret = IRQ_NONE;
         u32 ioaddr, boguscnt = RX_RING_SIZE;
         u32 intr_status = 0;
 
@@ -696,7 +697,13 @@ static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
         /* Get interrpt stat */
         intr_status = ctrl_inl(ioaddr + EESR);
         /* Clear interrupt */
-        ctrl_outl(intr_status, ioaddr + EESR);
+        if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF |
+                        EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF |
+                        TX_CHECK | EESR_ERR_CHECK)) {
+                ctrl_outl(intr_status, ioaddr + EESR);
+                ret = IRQ_HANDLED;
+        } else
+                goto other_irq;
 
         if (intr_status & (EESR_FRC | /* Frame recv*/
                         EESR_RMAF | /* Multi cast address recv*/
@@ -723,9 +730,10 @@ static irqreturn_t sh_eth_interrupt(int irq, void *netdev)
                        ndev->name, intr_status);
         }
 
+other_irq:
         spin_unlock(&mdp->lock);
 
-        return IRQ_HANDLED;
+        return ret;
 }
 
 static void sh_eth_timer(unsigned long data)
@@ -844,7 +852,13 @@ static int sh_eth_open(struct net_device *ndev)
         int ret = 0;
         struct sh_eth_private *mdp = netdev_priv(ndev);
 
-        ret = request_irq(ndev->irq, &sh_eth_interrupt, 0, ndev->name, ndev);
+        ret = request_irq(ndev->irq, &sh_eth_interrupt,
+#if defined(CONFIG_CPU_SUBTYPE_SH7763) || defined(CONFIG_CPU_SUBTYPE_SH7764)
+                                IRQF_SHARED,
+#else
+                                0,
+#endif
+                                ndev->name, ndev);
         if (ret) {
                 printk(KERN_ERR "Can not assign IRQ number to %s\n", CARDNAME);
                 return ret;