irqchip/gic-v3-mbi: Fix uninitialized mbi_lock

Yang Yingliang · Marc Zyngier · commit c530bb8a726a · 2019-01-17T17:03:44.000Z
The mbi_lock mutex is left uninitialized, so let's use DEFINE_MUTEX to initialize it statically. Fixes: 5052875 ("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>
diff --git 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;
