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Commit a30e7d1e authored by Vincent Chen's avatar Vincent Chen Committed by Greentime Hu
Browse files

nds32: Fix compiler warning, Wstringop-overflow, in vdso.c 



Getting a compiler warning, Wstringop-overflow, in
arch/nds32/kernel/vdso.c when kernel is built by gcc-8. Declaring
vdso_start and vdso_end as a pointer to fix this compiler warning.

Signed-off-by: default avatarVincent Chen <vincentc@andestech.com>
Reviewed-by: default avatarGreentime Hu <greentime@andestech.com>
Signed-off-by: default avatarGreentime Hu <greentime@andestech.com>
parent aaaaba57

arch/nds32/kernel/vdso.c

+5 −5
Original line number Diff line number Diff line
@@ -23,7 +23,7 @@ 
#include <asm/vdso_timer_info.h>

#include <asm/cache_info.h>

extern struct cache_info L1_cache_info[2];

extern char vdso_start, vdso_end;

extern char vdso_start[], vdso_end[];

static unsigned long vdso_pages __ro_after_init;

static unsigned long timer_mapping_base;
@@ -66,16 +66,16 @@ static int __init vdso_init(void) 
	int i;

	struct page **vdso_pagelist;



	if (memcmp(&vdso_start, "\177ELF", 4)) {

	if (memcmp(vdso_start, "\177ELF", 4)) {

		pr_err("vDSO is not a valid ELF object!\n");

		return -EINVAL;

	}

	/* Creat a timer io mapping to get clock cycles counter */

	get_timer_node_info();



	vdso_pages = (&vdso_end - &vdso_start) >> PAGE_SHIFT;

	vdso_pages = (vdso_end - vdso_start) >> PAGE_SHIFT;

	pr_info("vdso: %ld pages (%ld code @ %p, %ld data @ %p)\n",

		vdso_pages + 1, vdso_pages, &vdso_start, 1L, vdso_data);

		vdso_pages + 1, vdso_pages, vdso_start, 1L, vdso_data);



	/* Allocate the vDSO pagelist */

	vdso_pagelist = kcalloc(vdso_pages, sizeof(struct page *), GFP_KERNEL);
@@ -83,7 +83,7 @@ static int __init vdso_init(void) 
		return -ENOMEM;



	for (i = 0; i < vdso_pages; i++)

		vdso_pagelist[i] = virt_to_page(&vdso_start + i * PAGE_SIZE);

		vdso_pagelist[i] = virt_to_page(vdso_start + i * PAGE_SIZE);

	vdso_spec[1].pages = &vdso_pagelist[0];



	return 0;