[1/2] ath9k: Check for identical channels when changing channels.

Commit Message

Ben Greear Sept. 28, 2010, 12:07 a.m. UTC

None

Patch

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index a133878..4d34ba5 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1602,6 +1602,11 @@  static int ath9k_config(struct ieee80211_hw *hw, u32 changed)
 		struct ieee80211_channel *curchan = hw->conf.channel;
 		int pos = curchan->hw_value;
 
+		/* If channels are the same, then don't actually do anything.
+		 */
+		if (sc->sc_ah->curchan == &sc->sc_ah->channels[pos])
+			goto skip_chan_change;
+
 		aphy->chan_idx = pos;
 		aphy->chan_is_ht = conf_is_ht(conf);
 		if (hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)