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powerpc: Fix mpic_resume on early G5 macs

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mpic_resume() on G5 macs blindly dereferences mpic->fixups, but
it may legitimately be NULL (as on PowerMac7,2).  Add an explicit
check.

This fixes suspend-to-disk with one processor (maxcpus=1) for me.

Signed-off-by: Alastair Bridgewater <alastair.bridgewater@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Alastair Bridgewater 2010-06-12 15:36:48 +00:00 committed by Benjamin Herrenschmidt
parent bd2b64a12b
commit 7c9d93604b
1 changed files with 1 additions and 1 deletions
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2
arch/powerpc/sysdev/mpic.c
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@ -1666,7 +1666,7 @@ static int mpic_resume(struct sys_device *dev)
mpic->save_data[i].dest);
#ifdef CONFIG_MPIC_U3_HT_IRQS
{
if (mpic->fixups) {
struct mpic_irq_fixup *fixup = &mpic->fixups[i];
if (fixup->base) {