[PATCH] tr/3c359: handle kmalloc failures during init

From: Pablo Menichini <pablo@menichini.com.ar>
and maximilian attems <janitor@sternwelten.at>


while looking at kj mails from 200212 and 200301
this patch slept through
originally from: Pablo Menichini <pablo@menichini.com.ar>
rediffed and compile tested
patch applies on plain 2.6.0

maximilian attems <janitor@sternwelten.at>

handle kmalloc failures during init

diff -puN drivers/net/tokenring/3c359.c~tr3c_kmalloc drivers/net/tokenring/3c359.c


 linux-261-bk4-kj1-rddunlap/drivers/net/tokenring/3c359.c |   13 +++++++++++++
 1 files changed, 13 insertions(+)

drivers/net/tokenring/3c359.c

@@ -641,7 +641,20 @@ static int xl_open(struct net_device *dev)
 	 */
 	/* These MUST be on 8 byte boundaries */
 	xl_priv->xl_tx_ring = kmalloc((sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE) + 7, GFP_DMA | GFP_KERNEL) ; 
+	if (xl_priv->xl_tx_ring == NULL) {
+		printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers.\n",
+				     dev->name);
+		free_irq(dev->irq,dev);
+		return -ENOMEM;
+	}
 	xl_priv->xl_rx_ring = kmalloc((sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE) +7, GFP_DMA | GFP_KERNEL) ; 
+	if (xl_priv->xl_tx_ring == NULL) {
+		printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers.\n",
+				     dev->name);
+		free_irq(dev->irq,dev);
+		kfree(xl_priv->xl_tx_ring);
+		return -ENOMEM;
+	}
 	memset(xl_priv->xl_tx_ring,0,sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE) ; 
 	memset(xl_priv->xl_rx_ring,0,sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE) ;