From: Helmut Schaa Date: Fri, 23 Apr 2010 13:05:29 +0000 (+0200) Subject: rt2x00: rt2800lib: disable HT40 for now as it causes reception problems X-Git-Tag: firefly_0821_release~9833^2~2087^2~167^2~123 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2caaa5d36ee210919bd0ecc7b2e6648171544e95;p=firefly-linux-kernel-4.4.55.git rt2x00: rt2800lib: disable HT40 for now as it causes reception problems Disable HT40 support for now as it causes rx problems with HT40 capable 11n APs (when mac80211 enables HT40, rx is completely disfunctional). Once the rt2800 HT code is capable of using HT40 we should enable the flag again. I only tested this patch with a rt305x SoC device, nevertheless the patch disables HT40 also on PCI and USB rt2800 devices. Signed-off-by: Helmut Schaa Acked-by: Gertjan van Wingerde Acked-by: Ivo van Doorn Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c index 638600092f19..867b6527a1fd 100644 --- a/drivers/net/wireless/rt2x00/rt2800lib.c +++ b/drivers/net/wireless/rt2x00/rt2800lib.c @@ -2317,8 +2317,11 @@ int rt2800_probe_hw_mode(struct rt2x00_dev *rt2x00dev) else spec->ht.ht_supported = false; + /* + * Don't set IEEE80211_HT_CAP_SUP_WIDTH_20_40 for now as it causes + * reception problems with HT40 capable 11n APs + */ spec->ht.cap = - IEEE80211_HT_CAP_SUP_WIDTH_20_40 | IEEE80211_HT_CAP_GRN_FLD | IEEE80211_HT_CAP_SGI_20 | IEEE80211_HT_CAP_SGI_40 |