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RDMA/ocrdma: Initialize stats resources in the driver before ib device registration.

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In the latest kernel, process_mad hook of the driver can be invoked as
soon as device is registered. In this hook, ocrdma driver is issuing a
command to get the stats counters from the HW. This is triggering system
crash since the statistics command resources are not allocated by the driver.
Changing the sequence of initialization to avoid this crash.

Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Selvin Xavier
2016-02-05 20:06:37 +05:30
committed by Doug Ledford
parent 9f780dab7f
commit fd98d89698
3 changed files with 12 additions and 10 deletions
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6
drivers/infiniband/hw/ocrdma/ocrdma_main.c
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@@ -228,6 +228,11 @@ static int ocrdma_alloc_resources(struct ocrdma_dev *dev)
ocrdma_alloc_pd_pool(dev);
if (!ocrdma_alloc_stats_resources(dev)) {
pr_err("%s: stats resource allocation failed\n", __func__);
goto alloc_err;
}
spin_lock_init(&dev->av_tbl.lock);
spin_lock_init(&dev->flush_q_lock);
return 0;
@@ -238,6 +243,7 @@ alloc_err:
static void ocrdma_free_resources(struct ocrdma_dev *dev)
{
ocrdma_release_stats_resources(dev);
kfree(dev->stag_arr);
kfree(dev->qp_tbl);
kfree(dev->cq_tbl);