linux

iv/linux

History

Yangyang Li 8b436a99cd RDMA/hns: Fix the double unlock problem of poll_sem

If hns_roce_cmd_use_events() fails then it means that the poll_sem is not
obtained, but the poll_sem is released in hns_roce_cmd_use_polling(), this
will cause an unlock problem.

This is the static checker warning:
	drivers/infiniband/hw/hns/hns_roce_main.c:926 hns_roce_init()
	error: double unlocked '&hr_dev->cmd.poll_sem' (orig line 879)

Event mode and polling mode are mutually exclusive and resources are
separated, so there is no need to process polling mode resources in event
mode.

The initial mode of cmd is polling mode, so even if cmd fails to switch to
event mode, it is not necessary to switch to polling mode.

Fixes: a389d016c030 ("RDMA/hns: Enable all CMDQ context")
Fixes: 3d50503b3b33 ("RDMA/hns: Optimize cmd init and mode selection for hip08")
Link: https://lore.kernel.org/r/1627887374-20019-1-git-send-email-liangwenpeng@huawei.com
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Yangyang Li <liyangyang20@huawei.com>
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

2021-08-03 13:42:44 -03:00

bnxt_re

RDMA/bnxt_re: Fix stats counters

2021-07-12 14:42:27 -03:00

cxgb4

RDMA: Remove rdma_set_device_sysfs_group()

2021-06-16 20:58:32 -03:00

efa

RDMA: Split the alloc_hw_stats() ops to port and device variants

2021-06-16 20:58:29 -03:00

hfi1

Tracing updates for 5.14: