From: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Date: Sat, 12 Feb 2011 18:43:42 +0000 (+0200)
Subject: zd1211rw: move async iowrite16v up to callers
X-Git-Tag: v2.6.39-rc1~468^2~238^2^2~52
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8662b2518ff7995002378058488326ef7cb80de8;p=pandora-kernel.git

zd1211rw: move async iowrite16v up to callers

Writing beacon to device happen through multiple write command calls.
zd_usb_iowrite16v uses synchronous urb call and with multiple write
commands in row causes high CPU usage.

Make asynchronous zd_usb_iowrite16v_async available outside zd_usb.c
and use where possible.

This lower CPU usage from ~10% to ~2% on Intel Atom when running
AP-mode with 100 TU beacon interval.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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