[PATCH] x86/boot/KASLR: Change the function type to void

From: Chao Fan
Date: Mon Aug 06 2018 - 21:59:50 EST


Since function "handle_mem_options" is used only once:
arch/x86/boot/compressed/kaslr.c:421
handle_mem_options();
The return value is useless, so change it to void.

And also clean a useless variable.

Suggested-by: Dou Liyang <douly.fnst@xxxxxxxxxxxxxx>
Signed-off-by: Chao Fan <fanc.fnst@xxxxxxxxxxxxxx>
---
arch/x86/boot/compressed/kaslr.c | 18 ++++++++----------
1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index 302517929932..78724caadcfb 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -244,7 +244,7 @@ static void parse_gb_huge_pages(char *param, char *val)
}


-static int handle_mem_options(void)
+static void handle_mem_options(void)
{
char *args = (char *)get_cmd_line_ptr();
size_t len = strlen((char *)args);
@@ -254,7 +254,7 @@ static int handle_mem_options(void)

if (!strstr(args, "memmap=") && !strstr(args, "mem=") &&
!strstr(args, "hugepages"))
- return 0;
+ return;

tmp_cmdline = malloc(len + 1);
if (!tmp_cmdline)
@@ -272,8 +272,7 @@ static int handle_mem_options(void)
/* Stop at -- */
if (!val && strcmp(param, "--") == 0) {
warn("Only '--' specified in cmdline");
- free(tmp_cmdline);
- return -1;
+ goto out;
}

if (!strcmp(param, "memmap")) {
@@ -286,16 +285,16 @@ static int handle_mem_options(void)
if (!strcmp(p, "nopentium"))
continue;
mem_size = memparse(p, &p);
- if (mem_size == 0) {
- free(tmp_cmdline);
- return -EINVAL;
- }
+ if (mem_size == 0)
+ goto out;
+
mem_limit = mem_size;
}
}

+out:
free(tmp_cmdline);
- return 0;
+ return;
}

/*
@@ -581,7 +580,6 @@ static void process_mem_region(struct mem_vector *entry,
unsigned long image_size)
{
struct mem_vector region, overlap;
- struct slot_area slot_area;
unsigned long start_orig, end;
struct mem_vector cur_entry;

--
2.17.1