Alan Stern d697cdda43
USB: don't use a fixed DMA mapping for hub status URBs ...
This patch (as1296) gets rid of the fixed DMA-buffer mapping used by
the hub driver for its status URB. This URB doesn't get used much --
mainly when a device is plugged in or unplugged -- so the dynamic
mapping overhead is minimal. And most systems have many fewer
external hubs than root hubs, which don't need a mapped buffer anyway.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu >
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de >
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