Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= 
        <u.kleine-koenig@pengutronix.de>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     linux-kernel@vger.kernel.org, kernel@pengutronix.de,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Finn Thain <fthain@linux-m68k.org>,
        Zhang Qilong <zhangqilong3@huawei.com>,
        Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
        netdev@vger.kernel.org, linux-m68k@lists.linux-m68k.org
Subject: [PATCH 2/5] nubus: Make struct nubus_driver::remove return void
Date:   Tue, 27 Jul 2021 10:08:37 +0200
Message-Id: <20210727080840.3550927-3-u.kleine-koenig@pengutronix.de>
In-Reply-To: <20210727080840.3550927-1-u.kleine-koenig@pengutronix.de>
References: <20210727080840.3550927-1-u.kleine-koenig@pengutronix.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Precedence: bulk

The nubus core ignores the return value of the remove callback (in
nubus_device_remove()) and all implementers return 0 anyway.

So make it impossible for future drivers to return an unused error code
by changing the remove prototype to return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 drivers/net/ethernet/8390/mac8390.c     | 3 +--
 drivers/net/ethernet/natsemi/macsonic.c | 4 +---
 include/linux/nubus.h                   | 2 +-
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/8390/mac8390.c b/drivers/net/ethernet/8390/mac8390.c
index 9aac7119d382..91b04abfd687 100644
--- a/drivers/net/ethernet/8390/mac8390.c
+++ b/drivers/net/ethernet/8390/mac8390.c
@@ -428,13 +428,12 @@ static int mac8390_device_probe(struct nubus_board *board)
 	return err;
 }
 
-static int mac8390_device_remove(struct nubus_board *board)
+static void mac8390_device_remove(struct nubus_board *board)
 {
 	struct net_device *dev = nubus_get_drvdata(board);
 
 	unregister_netdev(dev);
 	free_netdev(dev);
-	return 0;
 }
 
 static struct nubus_driver mac8390_driver = {
diff --git a/drivers/net/ethernet/natsemi/macsonic.c b/drivers/net/ethernet/natsemi/macsonic.c
index 2289e1fe3741..8709d700e15a 100644
--- a/drivers/net/ethernet/natsemi/macsonic.c
+++ b/drivers/net/ethernet/natsemi/macsonic.c
@@ -603,7 +603,7 @@ static int mac_sonic_nubus_probe(struct nubus_board *board)
 	return err;
 }
 
-static int mac_sonic_nubus_remove(struct nubus_board *board)
+static void mac_sonic_nubus_remove(struct nubus_board *board)
 {
 	struct net_device *ndev = nubus_get_drvdata(board);
 	struct sonic_local *lp = netdev_priv(ndev);
@@ -613,8 +613,6 @@ static int mac_sonic_nubus_remove(struct nubus_board *board)
 			  SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
 			  lp->descriptors, lp->descriptors_laddr);
 	free_netdev(ndev);
-
-	return 0;
 }
 
 static struct nubus_driver mac_sonic_nubus_driver = {
diff --git a/include/linux/nubus.h b/include/linux/nubus.h
index eba50b057f6f..392fc6c53e96 100644
--- a/include/linux/nubus.h
+++ b/include/linux/nubus.h
@@ -86,7 +86,7 @@ extern struct list_head nubus_func_rsrcs;
 struct nubus_driver {
 	struct device_driver driver;
 	int (*probe)(struct nubus_board *board);
-	int (*remove)(struct nubus_board *board);
+	void (*remove)(struct nubus_board *board);
 };
 
 extern struct bus_type nubus_bus_type;
-- 
2.30.2