[IA64] Fix wrong access to irq_desc[] in iosapic_register_intr().
In error path we must unlock irq_desc[irq].lock before we change
'irq'.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 5f6d98e..cfe4654 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -794,8 +794,9 @@
err = register_intr(gsi, irq, IOSAPIC_LOWEST_PRIORITY,
polarity, trigger);
if (err < 0) {
+ spin_unlock(&irq_desc[irq].lock);
irq = err;
- goto unlock_all;
+ goto unlock_iosapic_lock;
}
/*
@@ -811,7 +812,7 @@
gsi, (trigger == IOSAPIC_EDGE ? "edge" : "level"),
(polarity == IOSAPIC_POL_HIGH ? "high" : "low"),
cpu_logical_id(dest), dest, irq_to_vector(irq));
- unlock_all:
+
spin_unlock(&irq_desc[irq].lock);
unlock_iosapic_lock:
spin_unlock_irqrestore(&iosapic_lock, flags);