[PATCH] cpcihp_generic: prevent loading without "bridge" parameter

[Akinobu Mita <akinobu.mita@gmail.com>]

cpcihp_generic module requires configured "bridge" module parameter.
But it can be loaded successfully without that parameter.
Because module init call ends up returning positive value.

This patch prevents from loading without setting "bridge" module parameter.

Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Scott Murray <scottm@somanetworks.com>
Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com>

Index: work-fault-inject/drivers/pci/hotplug/cpcihp_generic.c
===================================================================
--- work-fault-inject.orig/drivers/pci/hotplug/cpcihp_generic.c
+++ work-fault-inject/drivers/pci/hotplug/cpcihp_generic.c
@@ -84,7 +84,7 @@ static int __init validate_parameters(vo
 
 	if(!bridge) {
 		info("not configured, disabling.");
-		return 1;
+		return -EINVAL;
 	}
 	str = bridge;
 	if(!*str)
@@ -147,7 +147,7 @@ static int __init cpcihp_generic_init(vo
 
 	info(DRIVER_DESC " version: " DRIVER_VERSION);
 	status = validate_parameters();
-	if(status != 0)
+	if (status)
 		return status;
 
 	r = request_region(port, 1, "#ENUM hotswap signal register");