rapidio: remove mport resource reservation from common RIO code

Removes resource reservation from the common sybsystem initialization code
and make it part of mport driver initialization.  This resolves conflict
with resource reservation by device specific mport drivers.
Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Micha Nelissen <micha@neli.hopto.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/powerpc/sysdev/fsl_rio.c

@@ -1432,6 +1432,14 @@ int fsl_rio_setup(struct platform_device *dev)
 	port->iores.flags = IORESOURCE_MEM;
 	port->iores.name = "rio_io_win";
 
+	if (request_resource(&iomem_resource, &port->iores) < 0) {
+		dev_err(&dev->dev, "RIO: Error requesting master port region"
+			" 0x%016llx-0x%016llx\n",
+			(u64)port->iores.start, (u64)port->iores.end);
+			rc = -ENOMEM;
+			goto err_res;
+	}
+
 	priv->pwirq   = irq_of_parse_and_map(dev->dev.of_node, 0);
 	priv->bellirq = irq_of_parse_and_map(dev->dev.of_node, 2);
 	priv->txirq = irq_of_parse_and_map(dev->dev.of_node, 3);
@@ -1536,6 +1544,7 @@ int fsl_rio_setup(struct platform_device *dev)
 	return 0;
 err:
 	iounmap(priv->regs_win);
+err_res:
 	kfree(priv);
 err_priv:
 	kfree(port);

drivers/rapidio/rio.c

@@ -1137,20 +1137,9 @@ static int __devinit rio_init(void)
 
 int __devinit rio_init_mports(void)
 {
-	int rc = 0;
 	struct rio_mport *port;
 
 	list_for_each_entry(port, &rio_mports, node) {
-		if (!request_mem_region(port->iores.start,
-					resource_size(&port->iores),
-					port->name)) {
-			printk(KERN_ERR
-			       "RIO: Error requesting master port region 0x%016llx-0x%016llx\n",
-			       (u64)port->iores.start, (u64)port->iores.end);
-			rc = -ENOMEM;
-			goto out;
-		}
-
 		if (port->host_deviceid >= 0)
 			rio_enum_mport(port);
 		else
@@ -1159,8 +1148,7 @@ int __devinit rio_init_mports(void)
 
 	rio_init();
 
-      out:
-	return rc;
+	return 0;
 }
 
 device_initcall_sync(rio_init_mports);