linux-kernel - Re: [PATCHv4 06/16] staging: usbip: Add proper error reporting

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Date:	Fri, 25 Oct 2013 16:26:16 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Dominik Paulus <dominik.paulus@....de>
Cc:	Anthony Foiani <anthony.foiani@...il.com>,
	devel@...verdev.osuosl.org, linux-kernel@...cs.fau.de,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Kurt Kanzenbach <ly80toro@....cs.fau.de>, tobias.polzer@....de,
	linux-kernel@...r.kernel.org,
	Ilija Hadzic <ihadzic@...earch.bell-labs.com>
Subject: Re: [PATCHv4 06/16] staging: usbip: Add proper error reporting

On Sat, Oct 19, 2013 at 04:39:09PM +0200, Dominik Paulus wrote:
> +const char *usbip_net_strerror(int status)
> +{
> +	static const char *const errs[] = {
> +		/* ERR_OK */ "Success",
> +		/* ERR_NA */ "Command failed",
> +		/* ERR_MISMATCH */ "Protocol version mismatch",
> +		/* ERR_SYSERR */ "System error",
> +		/* ERR_UNEXPECTED */ "Unexpected opcode received",
> +		/* ERR_AUTHREQ */ "Server requires authentication",
> +		/* ERR_PERM */ "Permission denied",
> +		/* ERR_NOTFOUND */ "Requested device not found",
> +		/* ERR_NOAUTH */ "Server doesn't support authentication"
> +	};
> +	if (status < 0)
> +		status = -status;
> +	if (status >= (int) (sizeof(errs) / sizeof(*errs)))

Not a big deal, but for future reference, the cast here is unneeded.

> +		return "Invalid";
> +	return errs[status];
>  }

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