From: Dave Johnson <djohnson+linux-mips@sw.starentnetworks.com>
Date: Tue, 6 Mar 2007 01:50:27 +0000 (-0500)
Subject: [MIPS] Fix __raw_read_trylock() to allow multiple readers
X-Git-Tag: v2.6.21-rc3~15^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d52c2d5a626a2cb1848fa7063b3ab79e2752dac7;p=pandora-kernel.git

[MIPS] Fix __raw_read_trylock() to allow multiple readers

A deadlock can occur for mixed irq and non-irq rwlock readers if a 2nd
reader attempts to take lock by looping around __raw_read_trylock().

Signed-off-by: Dave Johnson <djohnson+linux-mips@sw.starentnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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