[PATCH 2/4] net: bcm63xx: Use platform_register/unregister_drivers()

[Thierry Reding]

From: Thierry Reding <tred...@nvidia.com>

These new helpers simplify implementing multi-driver modules and
properly handle failure to register one driver by unregistering all
previously registered drivers.

Signed-off-by: Thierry Reding <tred...@nvidia.com>
---
Applies on top of next-20151127.

 drivers/net/ethernet/broadcom/bcm63xx_enet.c | 28 ++++++++--------------------
 1 file changed, 8 insertions(+), 20 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c 
b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
index 8b1929e9f698..a54bafad3538 100644
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -2884,33 +2884,21 @@ struct platform_driver bcm63xx_enet_shared_driver = {
        },
 };
 
+static struct platform_driver * const drivers[] = {
+       &bcm63xx_enet_shared_driver,
+       &bcm63xx_enet_driver,
+       &bcm63xx_enetsw_driver,
+};
+
 /* entry point */
 static int __init bcm_enet_init(void)
 {
-       int ret;
-
-       ret = platform_driver_register(&bcm63xx_enet_shared_driver);
-       if (ret)
-               return ret;
-
-       ret = platform_driver_register(&bcm63xx_enet_driver);
-       if (ret)
-               platform_driver_unregister(&bcm63xx_enet_shared_driver);
-
-       ret = platform_driver_register(&bcm63xx_enetsw_driver);
-       if (ret) {
-               platform_driver_unregister(&bcm63xx_enet_driver);
-               platform_driver_unregister(&bcm63xx_enet_shared_driver);
-       }
-
-       return ret;
+       return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
 }
 
 static void __exit bcm_enet_exit(void)
 {
-       platform_driver_unregister(&bcm63xx_enet_driver);
-       platform_driver_unregister(&bcm63xx_enetsw_driver);
-       platform_driver_unregister(&bcm63xx_enet_shared_driver);
+       platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
 }
 
 
-- 
2.5.0

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