From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Tue, 1 Jul 2014 10:07:00 +0000 (+0200)
Subject: staging: rtl8723au: Sanitize USB read/write functions
X-Git-Tag: cleanup-for-v3.18~125^2~1241
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2786faa33bfc8d61b4fa45dd2e31664de796c837;p=pandora-kernel.git

staging: rtl8723au: Sanitize USB read/write functions

The original Realtek provided functions suffered badly from clutter to
accommodate broken operating systems. Lets try this lean and clean
version instead.

v2: Do not use the stack for data passed to usb_control_msg(). This
    requires reintroducing the mutex used in the old function. In
    addition, get rid of the no longer used 'usb_vendor_req_buf'.
    Note that rtl8723au_writeN() remains unlocked, so it can be used
    for bulk block transfers without having to retake the mutex for
    every write().

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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