The functions time_before, time_before_eq, time_after, and time_after_eq are more robust for comparing jiffies against other values.
So following patch implements usage of the time_after() macro, defined at linux/jiffies.h, which deals with wrapping correctly
Cc: linux-wireless@xxxxxxxxxxxxxxx
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: S.Çağlar Onur <caglar@xxxxxxxxxxxxx>
---
drivers/net/wireless/atmel.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/atmel.c b/drivers/net/wireless/atmel.c
index 63ec7a7..ef2da40 100644
--- a/drivers/net/wireless/atmel.c
+++ b/drivers/net/wireless/atmel.c
@@ -66,6 +66,7 @@
#include <linux/device.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
+#include <linux/jiffies.h>
#include <net/ieee80211.h>
#include "atmel.h"
@@ -516,7 +517,7 @@ struct atmel_private {
SITE_SURVEY_IN_PROGRESS,
SITE_SURVEY_COMPLETED
} site_survey_state;
- time_t last_survey;
+ unsigned long last_survey;
int station_was_associated, station_is_associated;
int fast_scan;
@@ -2283,7 +2284,7 @@ static int atmel_set_scan(struct net_device *dev,
return -EAGAIN;
/* Timeout old surveys. */
- if ((jiffies - priv->last_survey) > (20 * HZ))
+ if (time_after(jiffies, priv->last_survey + 20 * HZ))
priv->site_survey_state = SITE_SURVEY_IDLE;
priv->last_survey = jiffies;
--
1.5.4.3
--
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