1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c
index 781a802a321f..4f18e2d332df 100644
--- a/drivers/infiniband/hw/qib/qib_iba6120.c
+++ b/drivers/infiniband/hw/qib/qib_iba6120.c
@@ -2076,9 +2076,11 @@ static void qib_6120_config_ctxts(struct qib_devdata *dd)
 static void qib_update_6120_usrhead(struct qib_ctxtdata *rcd, u64 hd,
                                     u32 updegr, u32 egrhd, u32 npkts)
 {
-        qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
         if (updegr)
                 qib_write_ureg(rcd->dd, ur_rcvegrindexhead, egrhd, rcd->ctxt);
+        mmiowb();
+        qib_write_ureg(rcd->dd, ur_rcvhdrhead, hd, rcd->ctxt);
+        mmiowb();
 }
 
 static u32 qib_6120_hdrqempty(struct qib_ctxtdata *rcd)