[PATCH 4/7] x86_64: rename irq_desc/irq_desc_with_new - fix

[Yinghai Lu]

need to check if desc is null in smp_irq_move_cleanup

Signed-off-by: Yinghai Lu <yhlu.kernel@xxxxxxxxx>
---
 arch/x86/kernel/io_apic_64.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c
index 4d1b02d..e4f03cc 100644
--- a/arch/x86/kernel/io_apic_64.c
+++ b/arch/x86/kernel/io_apic_64.c
@@ -1950,6 +1950,9 @@ asmlinkage void smp_irq_move_cleanup_interrupt(void)
 		irq = __get_cpu_var(vector_irq)[vector];
 
 		desc = irq_desc(irq);
+		if (!desc)
+			continue;
+
 		cfg = irq_cfg(irq);
 		spin_lock(&desc->lock);
 		if (!cfg->move_cleanup_count)
-- 
1.5.4.5

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