[PATCH] qib: qib_qp: Replace rcu_assign_pointer() with RCU_INIT_POINTER()

From: Andreea-Cristina Bernat
Date: Tue Aug 26 2014 - 10:33:36 EST

According to RCU_INIT_POINTER()'s block comment 3.a, it can be used if
"3. The referenced data structure has already been exposed to readers either
at compile time or via rcu_assign_pointer() -and-
a. You have not made -any- reader-visible changes to this structure since

This case fulfills the conditions above because between the
rcu_dereference_protected() call and the rcu_assign_pointer() call there is no
update of that value.
Therefore, this patch makes the replacement.

The following Coccinelle semantic patch was used:

- rcu_assign_pointer
) )

Signed-off-by: Andreea-Cristina Bernat <bernat.ada@xxxxxxxxx>
drivers/infiniband/hw/qib/qib_qp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c
index 17daf42..cb0c680 100644
--- a/drivers/infiniband/hw/qib/qib_qp.c
+++ b/drivers/infiniband/hw/qib/qib_qp.c
@@ -269,7 +269,7 @@ static void remove_qp(struct qib_ibdev *dev, struct qib_qp *qp)
lockdep_is_held(&dev->qpt_lock))) != NULL;
qpp = &q->next)
if (q == qp) {
- rcu_assign_pointer(*qpp,
removed = 1;

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