diff options
author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2013-01-24 18:59:34 +0000 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-14 10:48:00 -0800 |
commit | 2803d6bda44c70f3bf48a22eb66277c8ffefa0a9 (patch) | |
tree | c7dcaa6ad4fb9c2acaba8b06b6e097690a7a5cc6 /drivers | |
parent | 9ba54b84e8d588c6403275ed3835820e04ff4cf5 (diff) |
IB/qib: Fix for broken sparse warning fix
commit d359f35430c4ea4dd4e24d809aeaeff1fa54c314 upstream.
Commit 1fb9fed6d489 ("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.
Reviewed-by: Gary Leshner <gary.s.leshner@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | 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 4850d03870c2..35275099cafd 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); |