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authorRoderick Colenbrander <thunderbird2k@gmail.com>2009-09-03 09:57:23 -0600
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-05 14:58:07 -0700
commit74a01180db4bbfd61304ae0ba1f60af55ffc803d (patch)
tree2f61aac8deb306a164f04a7d2753fbd723c906fc
parent5136a6c0fd5b26bbf39ad761cf7a4fc563ad83a3 (diff)
powerpc: Fix i8259 interrupt driver kernel crash on ML510
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 <thunderbird2k@gmail.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/powerpc/sysdev/xilinx_intc.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/xilinx_intc.c b/arch/powerpc/sysdev/xilinx_intc.c
index 3ee1fd37bbfc..40edad520770 100644
--- a/arch/powerpc/sysdev/xilinx_intc.c
+++ b/arch/powerpc/sysdev/xilinx_intc.c
@@ -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);
}

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