Commit 1fb9fed ("IB/qib: Fix QP RCU sparse warning")
broke qp hash list deletion in qp_remove() badly.This patch restores the former for loop behavior, while still fixing the sparse warnings. Cc: [email protected] Reviewed-by: Gary Leshner <[email protected]> Signed-off-by: Mike Marciniszyn <[email protected]> --- drivers/infiniband/hw/qib/qib_qp.c | 11 +++-------- 1 files changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c index 4850d03..3527509 100644 --- a/drivers/infiniband/hw/qib/qib_qp.c +++ b/drivers/infiniband/hw/qib/qib_qp.c @@ -263,20 +263,15 @@ static void remove_qp(struct qib_ibdev *dev, struct qib_qp *qp) struct qib_qp __rcu **qpp; qpp = &dev->qp_table[n]; - q = rcu_dereference_protected(*qpp, - lockdep_is_held(&dev->qpt_lock)); - for (; q; qpp = &q->next) { + for (; (q = rcu_dereference_protected(*qpp, + lockdep_is_held(&dev->qpt_lock))) != NULL; + qpp = &q->next) if (q == qp) { atomic_dec(&qp->refcount); *qpp = qp->next; rcu_assign_pointer(qp->next, NULL); - q = rcu_dereference_protected(*qpp, - lockdep_is_held(&dev->qpt_lock)); break; } - q = rcu_dereference_protected(*qpp, - lockdep_is_held(&dev->qpt_lock)); - } } spin_unlock_irqrestore(&dev->qpt_lock, flags); -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
