[NET]: DIV_ROUND_UP cleanup (part two)

Hopefully captured all single statement cases under net/. I'm
not too sure if there is some policy about #includes that are
"guaranteed" (ie., in the current tree) to be available through
some other #included header, so I just added linux/kernel.h to
each changed file that didn't #include it previously.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 457166889cc7..4ab29282dd67 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -476,7 +476,7 @@ ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
         hdrlen = ieee80211_get_hdrlen(tx->fc);
         payload_len = first->len - hdrlen;
         per_fragm = frag_threshold - hdrlen - FCS_LEN;
-        num_fragm = (payload_len + per_fragm - 1) / per_fragm;
+        num_fragm = DIV_ROUND_UP(payload_len, per_fragm);
 
         frags = kzalloc(num_fragm * sizeof(struct sk_buff *), GFP_ATOMIC);
         if (!frags)