From: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Date: Mon, 20 Nov 2006 17:45:04 +0000 (+0100)
Subject: [POWERPC] spufs: Fix missing stop-and-signal
X-Git-Tag: v2.6.20-rc1~34^2~40^2~8^2~86
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ebb2477f9a61b436dd22b75189857df1a77e585;p=pandora-kernel.git

[POWERPC] spufs: Fix missing stop-and-signal

When there is pending signals, current spufs_run_spu() always returns
-ERESTARTSYS and it is called again automatically.
But, if spe already stopped by stop-and-signal or halt instruction,
returning -ERESTARTSYS makes stop-and-signal/halt lost and
spu run over the end-point.

For your convenience, I attached a sample code to restage this bug.
If there is no bug, printed NPC will be 0x4000.

Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
---

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