sparse, being a static analyzer, emits the following warnings:
context imbalance in 'lock_vector_lock' - wrong count at exit
context imbalance in 'unlock_vector_lock' - unexpected unlock
Help it by annotating the pair of functions with __acquires and
__releases.
Cc: Yinghai Lu <ying...@kernel.org>
Cc: Thomas Gleixner <t...@linutronix.de>
Signed-off-by: Ramkumar Ramachandra <artag...@gmail.com>
---
arch/x86/kernel/apic/io_apic.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 9ed796c..b756417 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1061,6 +1061,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin,
EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
void lock_vector_lock(void)
+ __acquires(&vector_lock)
{
/* Used to the online set of cpus does not change
* during assign_irq_vector.
@@ -1069,6 +1070,7 @@ void lock_vector_lock(void)
}
void unlock_vector_lock(void)
+ __releases(&vector_lock)
{
raw_spin_unlock(&vector_lock);
}
--
1.8.3.2.733.gf8abaeb
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