From 71a7d1556264c1ad84b1bcf5f7a9cbc980b1e1fd Mon Sep 17 00:00:00 2001
From: Sonic Zhang <sonic.zhang@analog.com>
Date: Wed, 25 Jun 2008 12:02:07 +0800
Subject: [PATCH] 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>
---
arch/blackfin/kernel/irqchip.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c
index 73647c158774e..07402f57c9dea 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)
--
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