drivers/isdn/sc/init.c: check request_region for

1/1

 init.c |   11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)
@@ -354,8 +354,15 @@ static int __init sc_init(void)
 		sc_adapter[cinst]->iobase = io[b];
 		for(i = 0 ; i < MAX_IO_REGS - 1 ; i++) {
 			sc_adapter[cinst]->ioport[i] = io[b] + i * 0x400;
-			request_region(sc_adapter[cinst]->ioport[i], 1,
-					interface->id);
+			/*
+			 *check return value and let module_exit handle the release of the resources
+			 */
+			if (!(request_region(sc_adapter[cinst]->ioport[i], 1,
+					interface->id))) {
+				printk(KERN_ERR "Can't get I/O %X\n",sc_adapter[cinst]->ioport[i]);
+				return -ENODEV;
+			}
+			
 			pr_debug("Requesting I/O Port %#x\n",
 				sc_adapter[cinst]->ioport[i]);
 		}
