Re: [PATCH 2/2] RDMA/srp: Fix error return code in srp_parse_options()

[Andy Shevchenko]

On Fri, Nov 25, 2022 at 08:03:51PM +0800, Wang Yufen wrote:
> In the previous while loop, "ret" may be assigned zero. Therefore,
> "ret" needs to be assigned -EINVAL at the beginning of each loop.

...

>  	while ((p = strsep(&sep_opt, ",\n")) != NULL) {
> +		ret = -EINVAL;
>  		if (!*p)
>  			continue;

Better option is to investigate each case separately and gather all of them
into a single fix.

For example, this

	case SRP_OPT_MAX_IT_IU_SIZE:
		if (match_int(args, &token) || token < 0) {
			pr_warn("bad maximum initiator to target IU size '%s'\n", p);
			goto out;
		}
		target->max_it_iu_size = token;
		break;

can be rewritten as

	case SRP_OPT_MAX_IT_IU_SIZE:
		ret = match_int(args, &token);
		if (ret)
			goto out;
		if (token < 0) {
			pr_warn("bad maximum initiator to target IU size '%s'\n", p);
			ret = -EINVAL;
			goto out;
		}
		target->max_it_iu_size = token;
		break;

and so on...

-- 
With Best Regards,
Andy Shevchenko