1 files changed, 18 insertions, 5 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c
index adcaf85355ae..1ea433291fa7 100644
--- a/drivers/infiniband/hw/mthca/mthca_srq.c
+++ b/drivers/infiniband/hw/mthca/mthca_srq.c
@@ -241,7 +241,7 @@ int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
                 goto err_out_mailbox;
 
         spin_lock_init(&srq->lock);
-        atomic_set(&srq->refcount, 1);
+        srq->refcount = 1;
         init_waitqueue_head(&srq->wait);
 
         if (mthca_is_memfree(dev))
@@ -308,6 +308,17 @@ err_out:
         return err;
 }
 
+static inline int get_srq_refcount(struct mthca_dev *dev, struct mthca_srq *srq)
+{
+        int c;
+
+        spin_lock_irq(&dev->srq_table.lock);
+        c = srq->refcount;
+        spin_unlock_irq(&dev->srq_table.lock);
+
+        return c;
+}
+
 void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq)
 {
         struct mthca_mailbox *mailbox;
@@ -329,10 +340,10 @@ void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq)
         spin_lock_irq(&dev->srq_table.lock);
         mthca_array_clear(&dev->srq_table.srq,
                           srq->srqn & (dev->limits.num_srqs - 1));
+        --srq->refcount;
         spin_unlock_irq(&dev->srq_table.lock);
 
-        atomic_dec(&srq->refcount);
-        wait_event(srq->wait, !atomic_read(&srq->refcount));
+        wait_event(srq->wait, !get_srq_refcount(dev, srq));
 
         if (!srq->ibsrq.uobject) {
                 mthca_free_srq_buf(dev, srq);
@@ -414,7 +425,7 @@ void mthca_srq_event(struct mthca_dev *dev, u32 srqn,
         spin_lock(&dev->srq_table.lock);
         srq = mthca_array_get(&dev->srq_table.srq, srqn & (dev->limits.num_srqs - 1));
         if (srq)
-                atomic_inc(&srq->refcount);
+                ++srq->refcount;
         spin_unlock(&dev->srq_table.lock);
 
         if (!srq) {
@@ -431,8 +442,10 @@ void mthca_srq_event(struct mthca_dev *dev, u32 srqn,
         srq->ibsrq.event_handler(&event, srq->ibsrq.srq_context);
 
 out:
-        if (atomic_dec_and_test(&srq->refcount))
+        spin_lock(&dev->srq_table.lock);
+        if (!--srq->refcount)
                 wake_up(&srq->wait);
+        spin_unlock(&dev->srq_table.lock);
 }
 
 /*