svn commit: r207927 - stable/8/sys/dev/iwn

[Bernhard Schmidt]

Author: bschmidt
Date: Tue May 11 17:21:54 2010
New Revision: 207927
URL: http://svn.freebsd.org/changeset/base/207927

Log:
  MFC r207709:
  Add a workaround for a bug in the firmware regarding the transition
  from passive to active scans. Basicly disable it by increasing the
  amount packets to be received to an amount which can't be reached
  during dwell times.
  
  Approved by:	rpaulo (mentor)

Modified:
  stable/8/sys/dev/iwn/if_iwn.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)
  stable/8/sys/geom/sched/   (props changed)

Modified: stable/8/sys/dev/iwn/if_iwn.c
==============================================================================
--- stable/8/sys/dev/iwn/if_iwn.c	Tue May 11 17:14:17 2010	(r207926)
+++ stable/8/sys/dev/iwn/if_iwn.c	Tue May 11 17:21:54 2010	(r207927)
@@ -4730,7 +4730,7 @@ iwn_scan(struct iwn_softc *sc)
 			chan->passive = htole16(78);
 		else
 			chan->passive = htole16(110);
-		hdr->crc_threshold = htole16(1);
+		hdr->crc_threshold = 0xffff;
 	} else if (!(c->ic_flags & IEEE80211_CHAN_PASSIVE)) {
 		chan->rf_gain = 0x28;
 		chan->active  = htole16(36);
@@ -4743,7 +4743,7 @@ iwn_scan(struct iwn_softc *sc)
 			chan->passive = htole16(88);
 		else
 			chan->passive = htole16(120);
-		hdr->crc_threshold = htole16(1);
+		hdr->crc_threshold = 0xffff;
 	}
 
 	DPRINTF(sc, IWN_DEBUG_STATE,