net: Mac80211: Remove silly timespec dance

Converting time from one format to another seems to give coders a warm
and fuzzy feeling.

Use the proper interfaces.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John W. Linville <linville@tuxdriver.com>
[fix compile error]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 3 insertions, 9 deletions

diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index ba29ebc86141..aa06dcad336e 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -473,8 +473,6 @@ static void ieee80211_tx_latency_end_msrmnt(struct ieee80211_local *local,
                                             struct sta_info *sta,
                                             struct ieee80211_hdr *hdr)
 {
-        ktime_t skb_dprt;
-        struct timespec dprt_time;
         u32 msrmnt;
         u16 tid;
         u8 *qc;
@@ -506,9 +504,8 @@ static void ieee80211_tx_latency_end_msrmnt(struct ieee80211_local *local,
 
         tx_lat = &sta->tx_lat[tid];
 
-        ktime_get_ts(&dprt_time); /* time stamp completion time */
-        skb_dprt = ktime_set(dprt_time.tv_sec, dprt_time.tv_nsec);
-        msrmnt = ktime_to_ms(ktime_sub(skb_dprt, skb_arv));
+        /* Calculate the latency */
+        msrmnt = ktime_to_ms(ktime_sub(ktime_get(), skb_arv));
 
         if (tx_lat->max < msrmnt) /* update stats */
                 tx_lat->max = msrmnt;
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index d741b7369dc4..9b3d94e7c4be 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1770,15 +1770,12 @@ fail:
 static void ieee80211_tx_latency_start_msrmnt(struct ieee80211_local *local,
                                               struct sk_buff *skb)
 {
-        struct timespec skb_arv;
         struct ieee80211_tx_latency_bin_ranges *tx_latency;
 
         tx_latency = rcu_dereference(local->tx_latency);
         if (!tx_latency)
                 return;
-
-        ktime_get_ts(&skb_arv);
-        skb->tstamp = ktime_set(skb_arv.tv_sec, skb_arv.tv_nsec);
+        skb->tstamp = ktime_get();
 }
 
 /**