iommu/amd: Use DEFINE_SPINLOCK() for spinlock

Spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20201228135112.28621-1-zhengyongjun3@huawei.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd/iommu_v2.c b/drivers/iommu/amd/iommu_v2.c
index 5ecc0bc608ec6fac11e12bdea8da9a9ad9af1907..f8d4ad421e078704ff9b69104326abdbeb9b1d83 100644 (file)
--- a/drivers/iommu/amd/iommu_v2.c
+++ b/drivers/iommu/amd/iommu_v2.c
@@ -77,7 +77,7 @@ struct fault {
 };
 
 static LIST_HEAD(state_list);
-static spinlock_t state_lock;
+static DEFINE_SPINLOCK(state_lock);
 
 static struct workqueue_struct *iommu_wq;
 
@@ -938,8 +938,6 @@ static int __init amd_iommu_v2_init(void)
                return 0;
        }
 
-       spin_lock_init(&state_lock);
-
        ret = -ENOMEM;
        iommu_wq = alloc_workqueue("amd_iommu_v2", WQ_MEM_RECLAIM, 0);
        if (iommu_wq == NULL)