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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 <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Helmut Schaa 2011-01-30 13:16:52 +01:00 committed by John W. Linville
parent 8414ff07ac
commit 1dae8d342e
1 changed files with 3 additions and 2 deletions
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5
drivers/net/wireless/rt2x00/rt2x00mac.c
View File

@ -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);
/*