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-rw-r--r--arch/ppc/syslib/cpm2_pic.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/ppc/syslib/cpm2_pic.c b/arch/ppc/syslib/cpm2_pic.c
index 954b07fc1df3..c867be6981cb 100644
--- a/arch/ppc/syslib/cpm2_pic.c
+++ b/arch/ppc/syslib/cpm2_pic.c
@@ -107,6 +107,11 @@ static void cpm2_end_irq(unsigned int irq_nr)
simr = &(cpm2_immr->im_intctl.ic_simrh);
ppc_cached_irq_mask[word] |= 1 << bit;
simr[word] = ppc_cached_irq_mask[word];
+ /*
+ * Work around large numbers of spurious IRQs on PowerPC 82xx
+ * systems.
+ */
+ mb();
}
}