drivers/net: eliminate irq handler impossible checks, needless casts

- Eliminate check for irq handler 'dev_id==NULL' where the
  condition never occurs.

- Eliminate needless casts to/from void*

Signed-off-by: Jeff Garzik <jeff@garzik.org>

2 files changed, 3 insertions, 9 deletions

diff --git a/drivers/net/wan/cycx_main.c b/drivers/net/wan/cycx_main.c
index 12363e056b6..6e5f1c89851 100644
--- a/drivers/net/wan/cycx_main.c
+++ b/drivers/net/wan/cycx_main.c
@@ -303,9 +303,9 @@ out:	return ret;
  */
 static irqreturn_t cycx_isr(int irq, void *dev_id)
 {
-        struct cycx_device *card = (struct cycx_device *)dev_id;
+        struct cycx_device *card = dev_id;
 
-        if (!card || card->wandev.state == WAN_UNCONFIGURED)
+        if (card->wandev.state == WAN_UNCONFIGURED)
                 goto out;
 
         if (card->in_isr) {
diff --git a/drivers/net/wan/sdla.c b/drivers/net/wan/sdla.c
index 5715d25271f..6a485f0556f 100644
--- a/drivers/net/wan/sdla.c
+++ b/drivers/net/wan/sdla.c
@@ -875,13 +875,7 @@ static irqreturn_t sdla_isr(int irq, void *dev_id)
 
         dev = dev_id;
 
-        if (dev == NULL)
-        {
-                printk(KERN_WARNING "sdla_isr(): irq %d for unknown device.\n", irq);
-                return IRQ_NONE;
-        }
-
-        flp = dev->priv;
+        flp = netdev_priv(dev);
 
         if (!flp->initialized)
         {