This is a note to let you know that I've just added the patch titled
IB/qib: Fix for broken sparse warning fix
to the 3.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ib-qib-fix-for-broken-sparse-warning-fix.patch
and it can be found in the queue-3.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From d359f35430c4ea4dd4e24d809aeaeff1fa54c314 Mon Sep 17 00:00:00 2001
From: Mike Marciniszyn <[email protected]>
Date: Thu, 24 Jan 2013 18:59:34 +0000
Subject: IB/qib: Fix for broken sparse warning fix
From: Mike Marciniszyn <[email protected]>
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 <[email protected]>
Signed-off-by: Mike Marciniszyn <[email protected]>
Signed-off-by: Roland Dreier <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/infiniband/hw/qib/qib_qp.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
--- 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 *
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);
Patches currently in stable-queue which might be from
[email protected] are
queue-3.7/ib-qib-fix-for-broken-sparse-warning-fix.patch
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