eHEA: Capability flag for DLPAR support

This patch introduces a capability flag that is used by the DLPAR userspace
tool to check which DLPAR features are supported by the eHEA driver.

Missing goto has been included.
Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/ehea/ehea.h

@@ -39,7 +39,13 @@
 #include <asm/io.h>
 
 #define DRV_NAME	"ehea"
-#define DRV_VERSION	"EHEA_0065"
+#define DRV_VERSION	"EHEA_0067"
+
+/* EHEA capability flags */
+#define DLPAR_PORT_ADD_REM 1
+#define DLPAR_MEM_ADD 2
+#define DLPAR_MEM_REM 4
+#define EHEA_CAPABILITIES (DLPAR_PORT_ADD_REM)
 
 #define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \
 	| NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)

drivers/net/ehea/ehea_main.c

@@ -2923,6 +2923,15 @@ static int check_module_parm(void)
 	return ret;
 }
 
+static ssize_t ehea_show_capabilities(struct device_driver *drv,
+				      char *buf)
+{
+	return sprintf(buf, "%d", EHEA_CAPABILITIES);
+}
+
+static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
+		   ehea_show_capabilities, NULL);
+
 int __init ehea_module_init(void)
 {
 	int ret;
@@ -2934,8 +2943,19 @@ int __init ehea_module_init(void)
 	if (ret)
 		goto out;
 	ret = ibmebus_register_driver(&ehea_driver);
-	if (ret)
+	if (ret) {
 		ehea_error("failed registering eHEA device driver on ebus");
+		goto out;
+	}
+
+	ret = driver_create_file(&ehea_driver.driver,
+				 &driver_attr_capabilities);
+	if (ret) {
+		ehea_error("failed to register capabilities attribute, ret=%d",
+			   ret);
+		ibmebus_unregister_driver(&ehea_driver);
+		goto out;
+	}
 
 out:
 	return ret;
@@ -2943,6 +2963,7 @@ int __init ehea_module_init(void)
 
 static void __exit ehea_module_exit(void)
 {
+	driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
 	ibmebus_unregister_driver(&ehea_driver);
 }