Subtract of jiffies is fine even if one variable overwrap.
Signed-off-by: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
---
drivers/net/wireless/iwlwifi/iwl-helpers.h | 9 ---------
drivers/net/wireless/iwlwifi/iwl-scan.c | 3 +--
2 files changed, 1 insertions(+), 11 deletions(-)
diff --git a/drivers/net/wireless/iwlwifi/iwl-helpers.h b/drivers/net/wireless/iwlwifi/iwl-helpers.h
index 1aaef70..9233683 100644
--- a/drivers/net/wireless/iwlwifi/iwl-helpers.h
+++ b/drivers/net/wireless/iwlwifi/iwl-helpers.h
@@ -44,15 +44,6 @@ static inline struct ieee80211_conf *ieee80211_get_hw_conf(
return &hw->conf;
}
-static inline unsigned long elapsed_jiffies(unsigned long start,
- unsigned long end)
-{
- if (end >= start)
- return end - start;
-
- return end + (MAX_JIFFY_OFFSET - start) + 1;
-}
-
/**
* iwl_queue_inc_wrap - increment queue index, wrap back to beginning
* @index -- current index
diff --git a/drivers/net/wireless/iwlwifi/iwl-scan.c b/drivers/net/wireless/iwlwifi/iwl-scan.c
index e1aa0e1..12d9363 100644
--- a/drivers/net/wireless/iwlwifi/iwl-scan.c
+++ b/drivers/net/wireless/iwlwifi/iwl-scan.c
@@ -252,8 +252,7 @@ static void iwl_rx_scan_complete_notif(struct iwl_priv *priv,
IWL_DEBUG_SCAN(priv, "Scan on %sGHz took %dms\n",
(priv->scan_band == IEEE80211_BAND_2GHZ) ? "2.4" : "5.2",
- jiffies_to_msecs(elapsed_jiffies
- (priv->scan_start, jiffies)));
+ jiffies_to_msecs(jiffies - priv->scan_start));
queue_work(priv->workqueue, &priv->scan_completed);
--
1.7.1
--
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