sh: asm/gpio.h needs linux/kernel.h for might_sleep()/WARN_ON().

[linux-2.6-omap-h63xx.git] / drivers / infiniband / hw / ehca / ehca_cq.c

diff --git a/drivers/infiniband/hw/ehca/ehca_cq.c b/drivers/infiniband/hw/ehca/ehca_cq.c
index ec0cfcf3073f305dfd6ac796016f273f4db6f58f..33647a95eb9a03f1ff5a47c760fb6d3fc5c2d483 100644 (file)
--- a/drivers/infiniband/hw/ehca/ehca_cq.c
+++ b/drivers/infiniband/hw/ehca/ehca_cq.c
@@ -132,10 +132,19 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe, int comp_vector,
        if (cqe >= 0xFFFFFFFF - 64 - additional_cqe)
                return ERR_PTR(-EINVAL);
 
+       if (!atomic_add_unless(&shca->num_cqs, 1, ehca_max_cq)) {
+               ehca_err(device, "Unable to create CQ, max number of %i "
+                       "CQs reached.", ehca_max_cq);
+               ehca_err(device, "To increase the maximum number of CQs "
+                       "use the number_of_cqs module parameter.\n");
+               return ERR_PTR(-ENOSPC);
+       }
+
        my_cq = kmem_cache_zalloc(cq_cache, GFP_KERNEL);
        if (!my_cq) {
                ehca_err(device, "Out of memory for ehca_cq struct device=%p",
                         device);
+               atomic_dec(&shca->num_cqs);
                return ERR_PTR(-ENOMEM);
        }
 
@@ -267,6 +276,9 @@ struct ib_cq *ehca_create_cq(struct ib_device *device, int cqe, int comp_vector,
        for (i = 0; i < QP_HASHTAB_LEN; i++)
                INIT_HLIST_HEAD(&my_cq->qp_hashtab[i]);
 
+       INIT_LIST_HEAD(&my_cq->sqp_err_list);
+       INIT_LIST_HEAD(&my_cq->rqp_err_list);
+
        if (context) {
                struct ipz_queue *ipz_queue = &my_cq->ipz_queue;
                struct ehca_create_cq_resp resp;
@@ -305,6 +317,7 @@ create_cq_exit2:
 create_cq_exit1:
        kmem_cache_free(cq_cache, my_cq);
 
+       atomic_dec(&shca->num_cqs);
        return cq;
 }
 
@@ -359,6 +372,7 @@ int ehca_destroy_cq(struct ib_cq *cq)
        ipz_queue_dtor(NULL, &my_cq->ipz_queue);
        kmem_cache_free(cq_cache, my_cq);
 
+       atomic_dec(&shca->num_cqs);
        return 0;
 }