From: Clemens Ladisch <clemens@ladisch.de>
Date: Tue, 12 Apr 2011 05:54:59 +0000 (+0200)
Subject: firewire: ohci: optimize find_branch_descriptor()
X-Git-Tag: v3.0-rc1~368^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ff8fbc61727c926883eec381fbd3d32d1fab504;p=pandora-kernel.git

firewire: ohci: optimize find_branch_descriptor()

When z==2, the condition "key == 2" is superfluous because it cannot
occur without "b == 3", as a descriptor with b!=3 and key==2 would be
an OUTPUT_MORE_IMMEDIATE descriptor which cannot be used alone.

Also remove magic numbers and needless computations on the b field.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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