The 8xx cpm_cascade was calling irq_eoi for the cascaded irq,
but that will already have been called by the handle_fasteoi_irq
that generic_handle_irq will call. The handler is set in
arch/powerpc/sysdev/cpm1.c by the host map routine.
Signed-off-by: Milton Miller <milt...@bga.com>
Index: work.git/arch/powerpc/platforms/8xx/m8xx_setup.c
===================================================================
--- work.git.orig/arch/powerpc/platforms/8xx/m8xx_setup.c 2011-05-18
22:50:38.983498572 -0500
+++ work.git/arch/powerpc/platforms/8xx/m8xx_setup.c 2011-05-18
22:52:48.920532258 -0500
@@ -221,15 +221,9 @@ static void cpm_cascade(unsigned int irq
struct irq_chip *chip;
int cascade_irq;
- if ((cascade_irq = cpm_get_irq()) >= 0) {
- struct irq_desc *cdesc = irq_to_desc(cascade_irq);
-
+ if ((cascade_irq = cpm_get_irq()) >= 0)
generic_handle_irq(cascade_irq);
- chip = irq_desc_get_chip(cdesc);
- chip->irq_eoi(&cdesc->irq_data);
- }
-
chip = irq_desc_get_chip(desc);
chip->irq_eoi(&desc->irq_data);
}
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