linux-kernel - Re: [PATCH 26/45] kstrtox: convert drivers/isdn/

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Date:	Mon, 06 Dec 2010 01:10:45 +0100
From:	Tilman Schmidt <t.schmidt@...enixsoftware.de>
To:	Alexey Dobriyan <adobriyan@...il.com>
CC:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 26/45] kstrtox: convert drivers/isdn/

I like the patch, but why not go all the way?

Am 05.12.2010 18:49 schrieb Alexey Dobriyan:
> @@ -566,10 +566,10 @@ void gigaset_handle_modem_response(struct cardstate *cs)
>  		case RT_ZCAU:
>  			event->parameter = -1;
>  			if (curarg + 1 < params) {
> -				unsigned long type, value;
> +				u8 type, value;
>  
> -				i = strict_strtoul(argv[curarg++], 16, &type);
> -				j = strict_strtoul(argv[curarg++], 16, &value);
> +				i = kstrtou8(argv[curarg++], 16, &type);
> +				j = kstrtou8(argv[curarg++], 16, &value);
>  
>  				if (i == 0 && type < 256 &&
>  				    j == 0 && value < 256)

Once type and value are u8, the checks for < 256 are unnecessary.

> @@ -583,7 +583,7 @@ void gigaset_handle_modem_response(struct cardstate *cs)
>  				unsigned long res;
>  				int rc;
>  
> -				rc = strict_strtoul(argv[curarg++], 10, &res);
> +				rc = kstrtoul(argv[curarg++], 10, &res);
>  				if (rc == 0)
>  					event->parameter = res;
>  			}

The new kstrtoul() promises not to touch the result field in the event
of a conversion error, so &event->parameter can be passed directly to
it, getting rid of the variables rc and res and the if statement.

Thanks,
Tilman
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