From: Larry Finger <Larry.Finger@lwfinger.net>
Date: Thu, 9 Feb 2012 01:42:03 +0000 (-0600)
Subject: staging: r8712u: Simplify semaphores
X-Git-Tag: v3.4-rc1~186^2~176^2~105
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=86587b671bf87ed81d2d89cd1199af912402a05f;p=pandora-kernel.git

staging: r8712u: Simplify semaphores

I am preparing to convert this driver from semaphore to mutex locking,
The first step has been to eliminate a number of semaphores that were
initialized but never used, and one whose only use was a single "up"
after initialization. A total of 9 semaphores were removed in this process.

One other change was to remove some inline semaphore routines that were
unused.

In addition, several cases had the following structure:

down()
if () {
   ...
}
up()

The locking overhead was reduced by moving the up/down inside the if
block.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

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