linux-kernel - [PATCH] au1000_eth: remove useless check

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Message-ID: <20080512164421.GB22190@electric-eye.fr.zoreil.com>
Date:	Mon, 12 May 2008 18:44:21 +0200
From:	Francois Romieu <romieu@...zoreil.com>
To:	Julia Lawall <julia@...u.dk>
Cc:	jgarzik@...ox.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] au1000_eth: remove useless check

The lifespan of the device covers the request_irq .. free_irq interval.

The cast of a void * pointer is not needed either.

Signed-off-by: Francois Romieu <romieu@...zoreil.com>

diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c
index 3634b5f..7023d77 100644
--- a/drivers/net/au1000_eth.c
+++ b/drivers/net/au1000_eth.c
@@ -1239,12 +1239,7 @@ static int au1000_rx(struct net_device *dev)
  */
 static irqreturn_t au1000_interrupt(int irq, void *dev_id)
 {
-	struct net_device *dev = (struct net_device *) dev_id;
-
-	if (dev == NULL) {
-		printk(KERN_ERR "%s: isr: null dev ptr\n", dev->name);
-		return IRQ_RETVAL(1);
-	}
+	struct net_device *dev = dev_id;
 
 	/* Handle RX interrupts first to minimize chance of overrun */
 
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