Re: [PATCH] RDMA: error code handling

[Jason Gunthorpe <jgg@nvidia.com>]

On Mon, Aug 24, 2020 at 07:44:21PM -0400, Tong Zhang wrote:
> ocrdma_qp_state_change() returns 1 when new and old state are the same,
> however caller is checking using <0
> 
> Signed-off-by: Tong Zhang <ztong0001@gmail.com>
>  drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
> index c1751c9a0f62..518687c5e2cb 100644
> +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
> @@ -1384,7 +1384,7 @@ int _ocrdma_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
>  	/* if new and previous states are same hw doesn't need to
>  	 * know about it.
>  	 */
> -	if (status < 0)
> +	if (status == 1)
>  		return status;
>  	return ocrdma_mbx_modify_qp(dev, qp, attr, attr_mask);

I'm not comfortable with this patch unless someone from Broadcom
approves it.

Skipping the modify_qp just because the state is the same looks wrong
to me in the first place, I would rather see the dead code removed as
a no-change patch.

Jason