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| author | Lijun Ou <oulijun@huawei.com> | 2016-09-20 17:06:56 +0100 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2016-10-03 11:43:15 -0400 |
| commit | ed3e6d01138eb26634abb519bc66e0b0dc473d0e (patch) | |
| tree | c72e39551c60eb42ae188a0080d9bf1035ec19e2 /drivers/infiniband/hw | |
| parent | 622b85f9f7fbe1255649894d03e9e077b1a97e6c (diff) | |
| download | op-kernel-dev-ed3e6d01138eb26634abb519bc66e0b0dc473d0e.zip op-kernel-dev-ed3e6d01138eb26634abb519bc66e0b0dc473d0e.tar.gz | |
IB/hns: Fix bug of using uninit refcount and free
In current version, it uses uninitialized parameters named
refcount and free in hns_roce_cq_event.
This patch initializes these parameter in cq alloc and add
correspond process in cq free.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Dongdong Huang(Donald) <hdd.huang@huawei.com>
Reviewed-by: Wei Hu <xavier.huwei@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_cq.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_cq.c b/drivers/infiniband/hw/hns/hns_roce_cq.c index a52306f..3095f06 100644 --- a/drivers/infiniband/hw/hns/hns_roce_cq.c +++ b/drivers/infiniband/hw/hns/hns_roce_cq.c @@ -152,6 +152,9 @@ static int hns_roce_cq_alloc(struct hns_roce_dev *hr_dev, int nent, hr_cq->cons_index = 0; hr_cq->uar = hr_uar; + atomic_set(&hr_cq->refcount, 1); + init_completion(&hr_cq->free); + return 0; err_radix: @@ -191,6 +194,11 @@ static void hns_roce_free_cq(struct hns_roce_dev *hr_dev, /* Waiting interrupt process procedure carried out */ synchronize_irq(hr_dev->eq_table.eq[hr_cq->vector].irq); + /* wait for all interrupt processed */ + if (atomic_dec_and_test(&hr_cq->refcount)) + complete(&hr_cq->free); + wait_for_completion(&hr_cq->free); + spin_lock_irq(&cq_table->lock); radix_tree_delete(&cq_table->tree, hr_cq->cqn); spin_unlock_irq(&cq_table->lock); |
