On Thu, Sep 05, 2024 at 05:34:40PM +0800, Yu Jiaoliang wrote:
> Instead of directly casting and returning (void *) pointer, use ERR_CAST
> to explicitly return an error-valued pointer. This makes the error handling
> more explicit and improves code clarity.
>
> Signed-off-by: Yu Jiaoliang <yujiaoliang@xxxxxxxx>
> ---
> drivers/infiniband/core/mad_rmpp.c | 2 +-
> drivers/infiniband/core/uverbs_cmd.c | 2 +-
> drivers/infiniband/core/verbs.c | 2 +-
> 3 files changed, 3 insertions(+), 3 deletions(-)
I see other places in the code that could benefit from this change.
Please do it for whole drivers/infiniband and group the patches.
Thanks
>
> diff --git a/drivers/infiniband/core/mad_rmpp.c b/drivers/infiniband/core/mad_rmpp.c
> index 8af0619a39cd..b4b10e8a6495 100644
> --- a/drivers/infiniband/core/mad_rmpp.c
> +++ b/drivers/infiniband/core/mad_rmpp.c
> @@ -158,7 +158,7 @@ static struct ib_mad_send_buf *alloc_response_msg(struct ib_mad_agent *agent,
> ah = ib_create_ah_from_wc(agent->qp->pd, recv_wc->wc,
> recv_wc->recv_buf.grh, agent->port_num);
> if (IS_ERR(ah))
> - return (void *) ah;
> + return ERR_CAST(ah);
>
> hdr_len = ib_get_mad_data_offset(recv_wc->recv_buf.mad->mad_hdr.mgmt_class);
> msg = ib_create_send_mad(agent, recv_wc->wc->src_qp,
> diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
> index 1b3ea71f2c33..35a83825f6ba 100644
> --- a/drivers/infiniband/core/uverbs_cmd.c
> +++ b/drivers/infiniband/core/uverbs_cmd.c
> @@ -192,7 +192,7 @@ _ib_uverbs_lookup_comp_file(s32 fd, struct uverbs_attr_bundle *attrs)
> fd, attrs);
>
> if (IS_ERR(uobj))
> - return (void *)uobj;
> + return ERR_CAST(uobj);
>
> uverbs_uobject_get(uobj);
> uobj_put_read(uobj);
> diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
> index 473ee0831307..77268cce4d31 100644
> --- a/drivers/infiniband/core/verbs.c
> +++ b/drivers/infiniband/core/verbs.c
> @@ -572,7 +572,7 @@ struct ib_ah *rdma_create_ah(struct ib_pd *pd, struct rdma_ah_attr *ah_attr,
> GFP_KERNEL : GFP_ATOMIC);
> if (IS_ERR(slave)) {
> rdma_unfill_sgid_attr(ah_attr, old_sgid_attr);
> - return (void *)slave;
> + return ERR_CAST(slave);
> }
> ah = _rdma_create_ah(pd, ah_attr, flags, NULL, slave);
> rdma_lag_put_ah_roce_slave(slave);
> --
> 2.34.1
>
