From: Kazunori Asayama <asayama@sm.sony.co.jp>
Date: Fri, 29 Jun 2007 00:58:08 +0000 (+1000)
Subject: [POWERPC] spufs: Fix lost events in poll/epoll on mfc
X-Git-Tag: v2.6.23-rc1~767^2^2~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=933b0e35247ef0dbd1a078a0ba3705ddbbda129f;p=pandora-kernel.git

[POWERPC] spufs: Fix lost events in poll/epoll on mfc

When waiting for I/O events on mfc in an SPU context by using
poll/epoll syscalls, some of the events can be lost because of wrong
order of poll_wait and MFC status checks in the spufs_mfc_poll
function and non-atomic update of tagwait.  This fixes the
problem.

Signed-off-by: Kazunori Asayama <asayama@sm.sony.co.jp>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

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