SUN3/3X Lance trivial fix improved

This patch adds checking for allocated DVMA memory and granted IRQ line.
Signed-off-by: NCyrill V. Gorcunov <gorcunov@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/sun3lance.c

@@ -336,13 +336,27 @@ static int __init lance_probe( struct net_device *dev)
 
 	/* XXX - leak? */
 	MEM = dvma_malloc_align(sizeof(struct lance_memory), 0x10000);
+	if (MEM == NULL) {
+#ifdef CONFIG_SUN3
+		iounmap((void __iomem *)ioaddr);
+#endif
+		printk(KERN_WARNING "SUN3 Lance couldn't allocate DVMA memory\n");
+		return 0;
+	}
 
 	lp->iobase = (volatile unsigned short *)ioaddr;
 	dev->base_addr = (unsigned long)ioaddr; /* informational only */
 
 	REGA(CSR0) = CSR0_STOP;
 
-	request_irq(LANCE_IRQ, lance_interrupt, IRQF_DISABLED, "SUN3 Lance", dev);
+	if (request_irq(LANCE_IRQ, lance_interrupt, IRQF_DISABLED, "SUN3 Lance", dev) < 0) {
+#ifdef CONFIG_SUN3
+		iounmap((void __iomem *)ioaddr);
+#endif
+		dvma_free((void *)MEM);
+		printk(KERN_WARNING "SUN3 Lance unable to allocate IRQ\n");
+		return 0;
+	}
 	dev->irq = (unsigned short)LANCE_IRQ;