From: Maxim Uvarov <[email protected]>

                   -------------------
    This is a commit scheduled for the next v2.6.34 longterm release.
    If you see a problem with using this for longterm, please comment.
                   -------------------

commit 426b6cb478e60352a463a0d1ec75c1c9fab30b13 upstream.

Signed-off-by: Maxim Uvarov <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>
---
 arch/powerpc/kernel/crash.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c
index 0384376..cca7c8f 100644
--- a/arch/powerpc/kernel/crash.c
+++ b/arch/powerpc/kernel/crash.c
@@ -377,6 +377,9 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
        for_each_irq(i) {
                struct irq_desc *desc = irq_to_desc(i);
 
+               if (!desc || !desc->chip || !desc->chip->eoi)
+                       continue;
+
                if (desc->status & IRQ_INPROGRESS)
                        desc->chip->eoi(i);
 
-- 
1.7.4.4

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