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authorKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>2007-08-01 21:18:44 +0900
committerTony Luck <tony.luck@intel.com>2007-08-01 11:57:59 -0700
commit224685c0d1ca5970364c9f5d4f21ea1aa64c381e (patch)
treeef5153fedcfe7172d86a8d1d4ca5ed835ab79253 /arch/ia64
parent216fcd29af47ab53ffd87e82139fcc4095e34d91 (diff)
[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>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/kernel/iosapic.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c
index 5f6d98e866e..cfe4654838f 100644
--- a/arch/ia64/kernel/iosapic.c
+++ b/arch/ia64/kernel/iosapic.c
@@ -794,8 +794,9 @@ iosapic_register_intr (unsigned int gsi,
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 @@ iosapic_register_intr (unsigned int gsi,
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);