linux-kernel - [PATCH] net/hsr: Use setup_timer and mod

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Date:	Sun, 15 May 2016 19:37:44 +0530
From:	Muhammad Falak R Wani <falakreyaz@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	Arvid Brodin <arvid.brodin@...en.se>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] net/hsr: Use setup_timer and mod_timer.

The function setup_timer combines the initialization of a timer with the
initialization of the timer's function and data fields. The mulitiline
code for timer initialization is now replaced with function setup_timer.

Also, quoting the mod_timer() function comment:
-> mod_timer() is a more efficient way to update the expire field of an
   active timer (if the timer is inactive it will be activated).

Use setup_timer() and mod_timer() to setup and arm a timer, making the
code compact and aid readablity.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@...il.com>
---
 net/hsr/hsr_device.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 386cbce..16737cd 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -461,13 +461,9 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 	hsr->sequence_nr = HSR_SEQNR_START;
 	hsr->sup_sequence_nr = HSR_SUP_SEQNR_START;
 
-	init_timer(&hsr->announce_timer);
-	hsr->announce_timer.function = hsr_announce;
-	hsr->announce_timer.data = (unsigned long) hsr;
+	setup_timer(&hsr->announce_timer, hsr_announce, (unsigned long)hsr);
 
-	init_timer(&hsr->prune_timer);
-	hsr->prune_timer.function = hsr_prune_nodes;
-	hsr->prune_timer.data = (unsigned long) hsr;
+	setup_timer(&hsr->prune_timer, hsr_prune_nodes, (unsigned long)hsr);
 
 	ether_addr_copy(hsr->sup_multicast_addr, def_multicast_addr);
 	hsr->sup_multicast_addr[ETH_ALEN - 1] = multicast_spec;
@@ -502,8 +498,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
 	if (res)
 		goto fail;
 
-	hsr->prune_timer.expires = jiffies + msecs_to_jiffies(PRUNE_PERIOD);
-	add_timer(&hsr->prune_timer);
+	mod_timer(&hsr->prune_timer, jiffies + msecs_to_jiffies(PRUNE_PERIOD));
 
 	return 0;
 
-- 
1.9.1