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RDMA/core: Stop DIM before destroying CQ

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HW destroy operation should be last operation after all possible CQ users
completed their work, so move DIM work cancellation before such destroy
call.

Fixes: da6629793a ("RDMA/core: Provide RDMA DIM support for ULPs")
Link: https://lore.kernel.org/r/20200730082719.1582397-3-leon@kernel.org
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Leon Romanovsky 2020-07-30 11:27:18 +03:00 committed by Jason Gunthorpe
parent 7fa84b5708
commit 5d46b289d0
1 changed files with 10 additions and 3 deletions
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13
drivers/infiniband/core/cq.c
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@ -72,6 +72,15 @@ static void rdma_dim_init(struct ib_cq *cq)
INIT_WORK(&dim->work, ib_cq_rdma_dim_work);
}
static void rdma_dim_destroy(struct ib_cq *cq)
{
if (!cq->dim)
return;
cancel_work_sync(&cq->dim->work);
kfree(cq->dim);
}
static int __poll_cq(struct ib_cq *cq, int num_entries, struct ib_wc *wc)
{
int rc;
@ -331,12 +340,10 @@ void ib_free_cq_user(struct ib_cq *cq, struct ib_udata *udata)
WARN_ON_ONCE(1);
}
rdma_dim_destroy(cq);
trace_cq_free(cq);
rdma_restrack_del(&cq->res);
cq->device->ops.destroy_cq(cq, udata);
if (cq->dim)
cancel_work_sync(&cq->dim->work);
kfree(cq->dim);
kfree(cq->wc);
kfree(cq);
}