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

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Date:   Thu, 23 Nov 2017 17:08:47 +0800
From:   Chao Fan <fanc.fnst@...fujitsu.com>
To:     <hpa@...or.com>, <tglx@...utronix.de>, <mingo@...hat.com>,
        <x86@...nel.org>, <keescook@...omium.org>,
        <gregkh@...uxfoundation.org>, <n-horiguchi@...jp.nec.com>,
        <linux-kernel@...r.kernel.org>
CC:     Chao Fan <fanc.fnst@...fujitsu.com>
Subject: [PATCH] kaslr: clean up a useless variable and some usless space

There are two same variable "rc" in mem_avoid_memmap. One is in the
circulation, the other is out of the circulation. The one out will never
be used, so drop it.

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 a63fbc25ce84..8199a6187251 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -171,7 +171,6 @@ parse_memmap(char *p, unsigned long long *start, unsigned long long *size)
 static void mem_avoid_memmap(char *str)
 {
 	static int i;
-	int rc;
 
 	if (i >= MAX_MEMMAP_REGIONS)
 		return;
@@ -219,7 +218,7 @@ 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);
@@ -363,7 +362,7 @@ 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;
-- 
2.14.3