linux-kernel - Re: [PATCH v2 4/4] kaslr: clean up a useless variable and some usless space

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Date:   Mon, 13 Nov 2017 17:19:40 +0800
From:   Chao Fan <fanc.fnst@...fujitsu.com>
To:     Baoquan He <bhe@...hat.com>
CC:     <linux-kernel@...r.kernel.org>, <x86@...nel.org>, <hpa@...or.com>,
        <tglx@...utronix.de>, <mingo@...hat.com>, <keescook@...omium.org>,
        <yasu.isimatu@...il.com>, <indou.takao@...fujitsu.com>,
        <caoj.fnst@...fujitsu.com>, <douly.fnst@...fujitsu.com>
Subject: Re: [PATCH v2 4/4] kaslr: clean up a useless variable and some
 usless space

On Mon, Nov 13, 2017 at 04:32:33PM +0800, Baoquan He wrote:
>On 11/01/17 at 07:32pm, Chao Fan wrote:
>> There are two same variable "rc" in this function. One is in the
>> circulation, the other is out of the circulation. The one out will never
>> be used, so drop it.
>
>You can send this clean up patch alone.
>
OK, I will send it as a new patch.

Thanks,
Chao Fan

>> 
>> Signed-off-by: Chao Fan <fanc.fnst@...fujitsu.com>
>> ---
>>  arch/x86/boot/compressed/kaslr.c | 5 ++---
>>  1 file changed, 2 insertions(+), 3 deletions(-)
>> 
>> diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
>> index fcd640fdeaed..aff184e19270 100644
>> --- a/arch/x86/boot/compressed/kaslr.c
>> +++ b/arch/x86/boot/compressed/kaslr.c
>> @@ -211,7 +211,6 @@ static int parse_immovable_mem(char *p,
>>  static void mem_avoid_memmap(char *str)
>>  {
>>  	static int i;
>> -	int rc;
>>  
>>  	if (i >= MAX_MEMMAP_REGIONS)
>>  		return;
>> @@ -290,7 +289,7 @@ static int handle_mem_memmap(void)
>>  		return 0;
>>  
>>  	tmp_cmdline = malloc(len + 1);
>> -	if (!tmp_cmdline )
>> +	if (!tmp_cmdline)
>>  		error("Failed to allocate space for tmp_cmdline");
>>  
>>  	memcpy(tmp_cmdline, args, len);
>> @@ -436,7 +435,7 @@ static void mem_avoid_init(unsigned long input, unsigned long input_size,
>>  	cmd_line |= boot_params->hdr.cmd_line_ptr;
>>  	/* Calculate size of cmd_line. */
>>  	ptr = (char *)(unsigned long)cmd_line;
>> -	for (cmd_line_size = 0; ptr[cmd_line_size++]; )
>> +	for (cmd_line_size = 0; ptr[cmd_line_size++];)
>>  		;
>>  	mem_avoid[MEM_AVOID_CMDLINE].start = cmd_line;
>>  	mem_avoid[MEM_AVOID_CMDLINE].size = cmd_line_size;
>> -- 
>> 2.13.6
>> 
>> 
>> 
>
>