Blackfin arch: fix bug - kernel boot fails when Spinlock and rw-lock debugging enabled

Initialize the lock of bad_irq_desc properly.
The content of irq_desc array is replaced by bad_irq_desc in blackfin
arch irqchip init code. So, do it properly as common irq init code.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
index 73647c158774..07402f57c9de 100644
--- a/arch/blackfin/kernel/irqchip.c
+++ b/arch/blackfin/kernel/irqchip.c
@@ -60,9 +60,14 @@ static struct irq_chip bad_chip = {
 };
 
 static struct irq_desc bad_irq_desc = {
+        .status = IRQ_DISABLED,
         .chip = &bad_chip,
         .handle_irq = handle_bad_irq,
         .depth = 1,
+        .lock = __SPIN_LOCK_UNLOCKED(irq_desc->lock),
+#ifdef CONFIG_SMP
+        .affinity = CPU_MASK_ALL
+#endif
 };
 
 int show_interrupts(struct seq_file *p, void *v)