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powerpc: Fix i8259 interrupt driver kernel crash on ML510

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This patch fixes a null pointer exception caused by removal of
'ack()' for level interrupts in the Xilinx interrupt driver.  A recent
change to the xilinx interrupt controller removed the ack hook for
level irqs.

Signed-off-by: Roderick Colenbrander <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Roderick Colenbrander 2009-09-03 09:57:23 -06:00 • committed by Linus Torvalds
commit 74a01180db
1 changed files with 0 additions and 1 deletions
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arch/powerpc/sysdev/xilinx_intc.c
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@ -234,7 +234,6 @@ static void xilinx_i8259_cascade(unsigned int irq, struct irq_desc *desc)
generic_handle_irq(cascade_irq);
/* Let xilinx_intc end the interrupt */
desc->chip->ack(irq);
desc->chip->unmask(irq);
}