svn commit: r298792 - head/sys/dev/ath

[Adrian Chadd]

Author: adrian
Date: Fri Apr 29 18:53:16 2016
New Revision: 298792
URL: https://svnweb.freebsd.org/changeset/base/298792

Log:
  [ath] initialise do_ldpc to 0.
  
  I .. can't believe I missed this.
  
  This showed up because the AP was TX'ing LDPC to an iwm(4) chipset,
  which didn't advertise LDPC and doesn't /accept/ LDPC.  Amusingly, all
  the two other FreeBSD 11n parts I had tested with (AR9380, Intel 7260)
  and I completely forgot to test on ye olde hardware.
  
  That'll teach me.
  
  Tested:
  
  * AR9580 (AP) - Intel 7260 (STA), AR9380 (STA), Intel 6205 (STA)

Modified:
  head/sys/dev/ath/if_ath_tx_ht.c

Modified: head/sys/dev/ath/if_ath_tx_ht.c
==============================================================================
--- head/sys/dev/ath/if_ath_tx_ht.c	Fri Apr 29 17:56:16 2016	(r298791)
+++ head/sys/dev/ath/if_ath_tx_ht.c	Fri Apr 29 18:53:16 2016	(r298792)
@@ -237,6 +237,7 @@ ath_tx_rate_fill_rcflags(struct ath_soft
 	 * It's a global flag, not a per-try flag, so we clear
 	 * it if any of the rate entries aren't 11n.
 	 */
+	do_ldpc = 0;
 	if ((ni->ni_vap->iv_htcaps & IEEE80211_HTCAP_LDPC) &&
 	    (ni->ni_htcap & IEEE80211_HTCAP_LDPC))
 		do_ldpc = 1;