From: Helmut Schaa Date: Sun, 30 Jan 2011 12:16:52 +0000 (+0100) Subject: rt2x00: Limit beacon updates in bss_info_changed to USB devices X-Git-Tag: v2.6.39-rc1~468^2~417^2~22 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1dae8d342e842cb9971f44d7b68580c7b9f26174;p=platform%2Fkernel%2Flinux-stable.git rt2x00: Limit beacon updates in bss_info_changed to USB devices Currently there are two places that trigger a beacon update on PCI devices. The bss_info_changed callback and the periodic update triggered by the TBTT or PRETBTT interrupt. Since the next TBTT or PRETBTT interrupt will periodically fetch an updated beacon remove the update_beacon call in the bss_info_changed callback for PCI devices. In the worst case it will take one beacon interval longer to fetch the new beacon then before. For devices that have a PRETBTT interrupt there should be no change at all. Signed-off-by: Helmut Schaa Acked-by: Gertjan van Wingerde Signed-off-by: Ivo van Doorn Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/rt2x00/rt2x00mac.c b/drivers/net/wireless/rt2x00/rt2x00mac.c index 7d33167..6a66021 100644 --- a/drivers/net/wireless/rt2x00/rt2x00mac.c +++ b/drivers/net/wireless/rt2x00/rt2x00mac.c @@ -617,9 +617,10 @@ void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, bss_conf->bssid); /* - * Update the beacon. + * Update the beacon. This is only required on USB devices. PCI + * devices fetch beacons periodically. */ - if (changes & BSS_CHANGED_BEACON) + if (changes & BSS_CHANGED_BEACON && rt2x00_is_usb(rt2x00dev)) rt2x00queue_update_beacon(rt2x00dev, vif); /*