[Xen-devel] [PATCH 09/12] __setup_vector_irq: handle NULL chip_data

[stefano.stabellini@xxxxxxxxxxxxx]

From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

the VIRQ_TIMER handler and virq handlers in general don't have any
chip_data.

Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
---
 arch/x86/kernel/apic/io_apic.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index c64499c..4d3d391 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1269,6 +1269,8 @@ void __setup_vector_irq(int cpu)
        /* Mark the inuse vectors */
        for_each_irq_desc(irq, desc) {
                cfg = desc->chip_data;
+               if (!cfg)
+                       continue;
 
                /*
                 * If it is a legacy IRQ handled by the legacy PIC, this cpu
-- 
1.7.0.4


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