Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-23 08:23:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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: Vincent Chen <vincentc@andestech.com>
Reviewed-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
This commit is contained in:
Vincent Chen 2018-05-21 14:36:22 +08:00 committed by Greentime Hu
parent aaaaba5750
commit a30e7d1e37
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/nds32/kernel/vdso.c
View File

@ -23,7 +23,7 @@
#include <asm/vdso_timer_info.h> #include <asm/vdso_timer_info.h>
#include <asm/cache_info.h> #include <asm/cache_info.h>
extern struct cache_info L1_cache_info[2]; 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 vdso_pages __ro_after_init;
static unsigned long timer_mapping_base; static unsigned long timer_mapping_base;
@ -66,16 +66,16 @@ static int __init vdso_init(void)
int i; int i;
struct page **vdso_pagelist; 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"); pr_err("vDSO is not a valid ELF object!\n");
return -EINVAL; return -EINVAL;
} }
/* Creat a timer io mapping to get clock cycles counter */ /* Creat a timer io mapping to get clock cycles counter */
get_timer_node_info(); 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", 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 */ /* Allocate the vDSO pagelist */
vdso_pagelist = kcalloc(vdso_pages, sizeof(struct page *), GFP_KERNEL); vdso_pagelist = kcalloc(vdso_pages, sizeof(struct page *), GFP_KERNEL);
@ -83,7 +83,7 @@ static int __init vdso_init(void)
return -ENOMEM; return -ENOMEM;
for (i = 0; i < vdso_pages; i++) 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]; vdso_spec[1].pages = &vdso_pagelist[0];
return 0; return 0;