10:16 p.m.
On Fri, Mar 12, 2021 at 11:04:49AM +0800, kernel test robot wrote:
tree:
https://git.kernel.org/pub/scm/linux/kernel/git/leon/linux-rdma.git rdma-next
head: 05f9b877d9328976740745c6f5451a83685920d6
commit: 44d753250016442d012948cd500e94dfb4f1eea4 [13/42] RDMA/mlx5: Create ODP EQ only
when ODP MR is created
config: arc-randconfig-m031-20210311 (attached as .config)
compiler: arceb-elf-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
New smatch warnings:
drivers/infiniband/hw/mlx5/odp.c:1544 mlx5r_odp_create_eq() warn: missing error code
'err'
It is false alarm, we are returning err which is set to be 0.
Thanks
Old smatch warnings:
drivers/infiniband/hw/mlx5/odp.c:264 mlx5_ib_invalidate_range() warn: should '(((1)))
<< (umem_odp->page_shift)' be a 64 bit type?
vim +/err +1544 drivers/infiniband/hw/mlx5/odp.c
1533
1534 int mlx5r_odp_create_eq(struct mlx5_ib_dev *dev, struct mlx5_ib_pf_eq *eq)
1535 {
1536 struct mlx5_eq_param param = {};
1537 int err = 0;
1538
1539 if (eq->core)
1540 return 0;
1541
1542 mutex_lock(&dev->odp_eq_mutex);
1543 if (eq->core)
> 1544 goto unlock;
1545 INIT_WORK(&eq->work, mlx5_ib_eq_pf_action);
1546 spin_lock_init(&eq->lock);
1547 eq->dev = dev;
1548
1549 eq->pool = mempool_create_kmalloc_pool(MLX5_IB_NUM_PF_DRAIN,
1550 sizeof(struct mlx5_pagefault));
1551 if (!eq->pool) {
1552 err = -ENOMEM;
1553 goto unlock;
1554 }
1555
1556 eq->wq = alloc_workqueue("mlx5_ib_page_fault",
1557 WQ_HIGHPRI | WQ_UNBOUND | WQ_MEM_RECLAIM,
1558 MLX5_NUM_CMD_EQE);
1559 if (!eq->wq) {
1560 err = -ENOMEM;
1561 goto err_mempool;
1562 }
1563
1564 eq->irq_nb.notifier_call = mlx5_ib_eq_pf_int;
1565 param = (struct mlx5_eq_param){
1566 .irq_index = 0,
1567 .nent = MLX5_IB_NUM_PF_EQE,
1568 };
1569 param.mask[0] = 1ull << MLX5_EVENT_TYPE_PAGE_FAULT;
1570 eq->core = mlx5_eq_create_generic(dev->mdev, ¶m);
1571 if (IS_ERR(eq->core)) {
1572 err = PTR_ERR(eq->core);
1573 goto err_wq;
1574 }
1575 err = mlx5_eq_enable(dev->mdev, eq->core, &eq->irq_nb);
1576 if (err) {
1577 mlx5_ib_err(dev, "failed to enable odp EQ %d\n", err);
1578 goto err_eq;
1579 }
1580
1581 mutex_unlock(&dev->odp_eq_mutex);
1582 return 0;
1583 err_eq:
1584 mlx5_eq_destroy_generic(dev->mdev, eq->core);
1585 err_wq:
1586 eq->core = NULL;
1587 destroy_workqueue(eq->wq);
1588 err_mempool:
1589 mempool_destroy(eq->pool);
1590 unlock:
1591 mutex_unlock(&dev->odp_eq_mutex);
1592 return err;
1593 }
1594
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