Revert "scsi: mpt3sas: fix memory ordering on 64bit writes"

euler inclusion
category: feature
Bugzilla: N/A
CVE: N/A

Using lts patch instead of this patch.

----------------------------------------

This reverts commit 8ed10888e6280e58452f5da15a3e99f11a373c45.
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/scsi/mpt3sas/mpt3sas_base.c

@@ -3344,9 +3344,8 @@ _base_mpi_ep_writeq(__u64 b, volatile void __iomem *addr,
 static inline void
 _base_writeq(__u64 b, volatile void __iomem *addr, spinlock_t *writeq_lock)
 {
-	wmb();
 	__raw_writeq(b, addr);
-	barrier();
+	mmiowb();
 }
 #else
 static inline void