linux-kernel - Re: [PATCH 3/5] x86: simplify early command line parsing

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Date:	Wed, 6 Jan 2016 09:35:47 -0800
From:	Dave Hansen <dave@...1.net>
To:	Borislav Petkov <bp@...e.de>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org,
	dave.hansen@...ux.intel.com, hpa@...or.com, fenghua.yu@...el.com,
	yu-cheng.yu@...el.com
Subject: Re: [PATCH 3/5] x86: simplify early command line parsing

On 01/06/2016 09:10 AM, Borislav Petkov wrote:
>> > diff -puN arch/x86/lib/cmdline.c~x86-early-command-line-non-term arch/x86/lib/cmdline.c
>> > --- a/arch/x86/lib/cmdline.c~x86-early-command-line-non-term	2015-12-22 11:56:59.454186167 -0800
>> > +++ b/arch/x86/lib/cmdline.c	2015-12-22 11:56:59.457186302 -0800
>> > @@ -39,9 +39,6 @@ int cmdline_find_option_bool(const char
>> >  	if (!cmdline)
>> >  		return -1;      /* No command line */
>> >  
>> > -	if (!strlen(cmdline))
>> > -		return 0;
>> > -
> Patch 1 adds the strlen(), this patch removes it. Please merge both patches.

Yes, it adds a line that uses strlen.  But, there was already the use in
the min_t() "call":

> -	len = min_t(int, strlen(cmdline), COMMAND_LINE_SIZE);
> -	if (!len)
> +	if (!strlen(cmdline))
>  		return 0;

I wanted to separate the two things because they really fix two separate
issues.  I also want to ensure that any problems that this patch causes
can be isolated to the smallest change possible.
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