[rt2x00-users] [PATCH 03/12] rt2x00: Limit beacon updates in bss_info_changed to USB devices

Johannes Stezenbach js at sig21.net
Sat Jan 15 02:21:00 EST 2011

On Fri, Jan 14, 2011 at 10:41:20AM +0100, Helmut Schaa wrote:
> 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.

There is one catch for the devices w/o PRETBTT: ieee80211_get_buffered_bc()
will return the buffered frames even thought the hw has not sent
the DTIM yet.  Right?


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