[PATCH] handle errors returned by platform_get_irq*()

platform_get_irq*() now returns on -ENXIO when the resource cannot be
found.  Ensure all users of platform_get_irq*() handle this error
appropriately.

Signed-off-by: David Vrabel <dvrabel@arcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index 32431dc..71f27e9 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -674,6 +674,11 @@
 		ret = -ENODEV;
 		goto out;
 	}
+	if (ahwif->irq < 0) {
+		pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id);
+		ret = -ENODEV;
+		goto out;
+	}
 
 	if (!request_mem_region (res->start, res->end-res->start, pdev->name)) {
 		pr_debug("%s: request_mem_region failed\n", DRV_NAME);