From: Andre Detsch <adetsch@br.ibm.com>
Date: Tue, 21 Oct 2008 00:16:09 +0000 (+1100)
Subject: powerpc/spufs: Explain conditional decrement of aff_sched_count
X-Git-Tag: v2.6.28-rc1~58^2~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34318c253b861f82bd4a2956e6c8ae8ee2c3aae7;p=pandora-kernel.git

powerpc/spufs: Explain conditional decrement of aff_sched_count

This patch adds a comment to clarify why atomic_dec_if_positive is being used
to decrement gang's aff_sched_count on SPU context unbind.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
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