SUN3/3X Lance trivial fix improved

This patch adds checking for allocated DVMA memory and granted IRQ line.

Signed-off-by: Cyrill V. Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/net/sun3lance.c b/drivers/net/sun3lance.c
index c62e85d89f41..7bee45b42a2c 100644
--- a/drivers/net/sun3lance.c
+++ b/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;