irqchip/gic-v3-mbi: Fix uninitialized mbi_lock

The mbi_lock mutex is left uninitialized, so let's use DEFINE_MUTEX
to initialize it statically.

Fixes: 505287525c24d ("irqchip/gic-v3: Add support for Message Based Interrupts as an MSI controller")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/irqchip/irq-gic-v3-mbi.c b/drivers/irqchip/irq-gic-v3-mbi.c
index ad70e7c416e3..fbfa7ff6deb1 100644
--- a/drivers/irqchip/irq-gic-v3-mbi.c
+++ b/drivers/irqchip/irq-gic-v3-mbi.c
@@ -24,7 +24,7 @@ struct mbi_range {
         unsigned long           *bm;
 };
 
-static struct mutex             mbi_lock;
+static DEFINE_MUTEX(mbi_lock);
 static phys_addr_t              mbi_phys_base;
 static struct mbi_range         *mbi_ranges;
 static unsigned int             mbi_range_nr;