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arm: dump: no need to check return value of debugfs_create functions

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When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Russell King <linux@armlinux.org.uk>
Cc: Jinbum Park <jinb.park7@gmail.com>
Cc: linux-arm-kernel@lists.infradead.org
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2019-01-22 15:41:12 +01:00
parent 30ed997a87
commit db0487abd6
3 changed files with 7 additions and 14 deletions
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9
arch/arm/include/asm/ptdump.h
View File

@ -21,13 +21,10 @@ struct ptdump_info {
void ptdump_walk_pgd(struct seq_file *s, struct ptdump_info *info);
#ifdef CONFIG_ARM_PTDUMP_DEBUGFS
int ptdump_debugfs_register(struct ptdump_info *info, const char *name);
void ptdump_debugfs_register(struct ptdump_info *info, const char *name);
#else
static inline int ptdump_debugfs_register(struct ptdump_info *info,
const char *name)
{
return 0;
}
static inline void ptdump_debugfs_register(struct ptdump_info *info,
const char *name) { }
#endif /* CONFIG_ARM_PTDUMP_DEBUGFS */
void ptdump_check_wx(void);

4
arch/arm/mm/dump.c
View File

@ -450,7 +450,7 @@ void ptdump_check_wx(void)
static int ptdump_init(void)
{
ptdump_initialize();
return ptdump_debugfs_register(&kernel_ptdump_info,
"kernel_page_tables");
ptdump_debugfs_register(&kernel_ptdump_info, "kernel_page_tables");
return 0;
}
__initcall(ptdump_init);

8
arch/arm/mm/ptdump_debugfs.c
View File

@ -24,11 +24,7 @@ static const struct file_operations ptdump_fops = {
.release = single_release,
};
int ptdump_debugfs_register(struct ptdump_info *info, const char *name)
void ptdump_debugfs_register(struct ptdump_info *info, const char *name)
{
struct dentry *pe;
pe = debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
return pe ? 0 : -ENOMEM;
debugfs_create_file(name, 0400, NULL, info, &ptdump_fops);
}