Index: ksrc/drivers/16550A/16550A.c
===================================================================
--- ksrc/drivers/16550A/16550A.c	(Revision 287)
+++ ksrc/drivers/16550A/16550A.c	(Arbeitskopie)
@@ -114,26 +114,34 @@
 static struct rtdm_device   *device[MAX_DEVICES];
 
 static unsigned long        ioaddr[MAX_DEVICES];
-static int                  ioaddr_c;
 static unsigned int         irq[MAX_DEVICES];
-static int                  irq_c;
 static unsigned int         baud_base[MAX_DEVICES];
-static int                  baud_base_c;
 static int                  tx_fifo[MAX_DEVICES];
-static int                  tx_fifo_c;
 static unsigned int         start_index;
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+static int                  ioaddr_c;
+static int                  irq_c;
+static int                  baud_base_c;
+static int                  tx_fifo_c;
+
 module_param_array(ioaddr, ulong, &ioaddr_c, 0400);
+module_param_array(irq, uint, &irq_c, 0400);
+module_param_array(baud_base, uint, &baud_base_c, 0400);
+module_param_array(tx_fifo, int, &tx_fifo_c, 0400);
+#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) */
+MODULE_PARM(ioaddr, "1-" __MODULE_STRING(MAX_DEVICES) "i");
+MODULE_PARM(irq, "1-" __MODULE_STRING(MAX_DEVICES) "i");
+MODULE_PARM(baud_base, "1-" __MODULE_STRING(MAX_DEVICES) "i");
+MODULE_PARM(tx_fifo, "1-" __MODULE_STRING(MAX_DEVICES) "i");
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) */
+
 MODULE_PARM_DESC(ioaddr, "I/O addresses of the serial devices");
-module_param_array(irq, uint, &irq_c, 0400);
 MODULE_PARM_DESC(irq, "IRQ numbers of the serial devices");
-module_param_array(baud_base, uint, &baud_base_c, 0400);
 MODULE_PARM_DESC(baud_base,
     "Maximum baud rate of the serial device (internal clock rate / 16)");
-module_param_array(tx_fifo, int, &tx_fifo_c, 0400);
 MODULE_PARM_DESC(tx_fifo, "Transmitter FIFO size");
-#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) */
+
 module_param(start_index, uint, 0400);
 MODULE_PARM_DESC(start_index, "First device instance number to be used");
 
@@ -1026,7 +1034,7 @@
     device_class:       RTDM_CLASS_SERIAL,
     device_sub_class:   RTDM_SUBCLASS_16550A,
     driver_name:        "xeno_16550A",
-    driver_version:     RTDM_DRIVER_VER(1, 2, 1),
+    driver_version:     RTDM_DRIVER_VER(1, 2, 2),
     peripheral_name:    "UART 16550A",
     provider_name:      "Jan Kiszka",
 };
@@ -1040,10 +1048,15 @@
     int                 i;
 
 
-    if (irq_c < ioaddr_c)
-        return -EINVAL;
+    for (i = 0; i < MAX_DEVICES; i++) {
+        if (!ioaddr[i])
+            continue;
 
-    for (i = 0; i < ioaddr_c; i++) {
+        ret = -EINVAL;
+        if (!irq[i]) {
+            goto cleanup_out;
+        }
+
         dev = kmalloc(sizeof(struct rtdm_device), GFP_KERNEL);
         ret = -ENOMEM;
         if (!dev)