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dn_dev: Use time_before

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The functions time_before, time_before_eq, time_after, and time_after_eq
are more robust for comparing jiffies against other values.

A simplified version of the Coccinelle semantic patch making this change
is as follows:

@change@
expression E1,E2;
@@

(
- (jiffies - E1) < E2
+ time_before(jiffies, E1+E2)
)

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Himangi Saraogi 2014-08-20 23:13:07 +05:30 committed by David S. Miller
parent 0932997e34
commit b5c5c36d36
1 changed files with 2 additions and 1 deletions
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3
net/decnet/dn_dev.c
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@ -41,6 +41,7 @@
#include <linux/sysctl.h>
#include <linux/notifier.h>
#include <linux/slab.h>
#include <linux/jiffies.h>
#include <asm/uaccess.h>
#include <net/net_namespace.h>
#include <net/neighbour.h>
@ -875,7 +876,7 @@ static void dn_send_endnode_hello(struct net_device *dev, struct dn_ifaddr *ifa)
static int dn_am_i_a_router(struct dn_neigh *dn, struct dn_dev *dn_db, struct dn_ifaddr *ifa)
{
/* First check time since device went up */
if ((jiffies - dn_db->uptime) < DRDELAY)
if (time_before(jiffies, dn_db->uptime + DRDELAY))
return 0;
/* If there is no router, then yes... */