linux-kernel - [PATCH] drivers/net: arcnet: Convert timers to use timer

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Message-ID: <20171025105406.GA146659@beast>
Date:   Wed, 25 Oct 2017 03:54:06 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Michael Grzeschik <m.grzeschik@...gutronix.de>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drivers/net: arcnet: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Michael Grzeschik <m.grzeschik@...gutronix.de>
Cc: netdev@...r.kernel.org
Signed-off-by: Kees Cook <keescook@...omium.org>
---
 drivers/net/arcnet/arcnet.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c
index 13236b2cdf13..8459115d9d4e 100644
--- a/drivers/net/arcnet/arcnet.c
+++ b/drivers/net/arcnet/arcnet.c
@@ -382,9 +382,10 @@ static void arcdev_setup(struct net_device *dev)
 	dev->flags = IFF_BROADCAST;
 }
 
-static void arcnet_timer(unsigned long data)
+static void arcnet_timer(struct timer_list *t)
 {
-	struct net_device *dev = (struct net_device *)data;
+	struct arcnet_local *lp = from_timer(lp, t, timer);
+	struct net_device *dev = lp->dev;
 
 	if (!netif_carrier_ok(dev)) {
 		netif_carrier_on(dev);
@@ -450,7 +451,7 @@ struct net_device *alloc_arcdev(const char *name)
 
 		lp->dev = dev;
 		spin_lock_init(&lp->lock);
-		setup_timer(&lp->timer, arcnet_timer, (unsigned long)dev);
+		timer_setup(&lp->timer, arcnet_timer, 0);
 	}
 
 	return dev;
-- 
2.7.4


-- 
Kees Cook
Pixel Security