summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-01-22 18:21:10 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2019-06-03 16:39:40 +0300
commit2fcc6e202a9d45f1556365ee4f4de973e1c834ec (patch)
tree55fac0c42a918e8cf697b89b359d96a22db9b3c8
parent282401df902465186ff6ed5a7ba4894c589553f2 (diff)
downloadlinux-2fcc6e202a9d45f1556365ee4f4de973e1c834ec.tar.xz
hwpoison-inject: no need to check return value of debugfs_create functions
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: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: linux-mm@kvack.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--mm/hwpoison-inject.c67
1 files changed, 22 insertions, 45 deletions
diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c
index 1a7497d015b2..5b7430bd83a6 100644
--- a/mm/hwpoison-inject.c
+++ b/mm/hwpoison-inject.c
@@ -77,63 +77,40 @@ static void pfn_inject_exit(void)
static int pfn_inject_init(void)
{
- struct dentry *dentry;
-
hwpoison_dir = debugfs_create_dir("hwpoison", NULL);
- if (hwpoison_dir == NULL)
- return -ENOMEM;
/*
* Note that the below poison/unpoison interfaces do not involve
* hardware status change, hence do not require hardware support.
* They are mainly for testing hwpoison in software level.
*/
- dentry = debugfs_create_file("corrupt-pfn", 0200, hwpoison_dir,
- NULL, &hwpoison_fops);
- if (!dentry)
- goto fail;
-
- dentry = debugfs_create_file("unpoison-pfn", 0200, hwpoison_dir,
- NULL, &unpoison_fops);
- if (!dentry)
- goto fail;
-
- dentry = debugfs_create_u32("corrupt-filter-enable", 0600,
- hwpoison_dir, &hwpoison_filter_enable);
- if (!dentry)
- goto fail;
-
- dentry = debugfs_create_u32("corrupt-filter-dev-major", 0600,
- hwpoison_dir, &hwpoison_filter_dev_major);
- if (!dentry)
- goto fail;
-
- dentry = debugfs_create_u32("corrupt-filter-dev-minor", 0600,
- hwpoison_dir, &hwpoison_filter_dev_minor);
- if (!dentry)
- goto fail;
-
- dentry = debugfs_create_u64("corrupt-filter-flags-mask", 0600,
- hwpoison_dir, &hwpoison_filter_flags_mask);
- if (!dentry)
- goto fail;
-
- dentry = debugfs_create_u64("corrupt-filter-flags-value", 0600,
- hwpoison_dir, &hwpoison_filter_flags_value);
- if (!dentry)
- goto fail;
+ debugfs_create_file("corrupt-pfn", 0200, hwpoison_dir, NULL,
+ &hwpoison_fops);
+
+ debugfs_create_file("unpoison-pfn", 0200, hwpoison_dir, NULL,
+ &unpoison_fops);
+
+ debugfs_create_u32("corrupt-filter-enable", 0600, hwpoison_dir,
+ &hwpoison_filter_enable);
+
+ debugfs_create_u32("corrupt-filter-dev-major", 0600, hwpoison_dir,
+ &hwpoison_filter_dev_major);
+
+ debugfs_create_u32("corrupt-filter-dev-minor", 0600, hwpoison_dir,
+ &hwpoison_filter_dev_minor);
+
+ debugfs_create_u64("corrupt-filter-flags-mask", 0600, hwpoison_dir,
+ &hwpoison_filter_flags_mask);
+
+ debugfs_create_u64("corrupt-filter-flags-value", 0600, hwpoison_dir,
+ &hwpoison_filter_flags_value);
#ifdef CONFIG_MEMCG
- dentry = debugfs_create_u64("corrupt-filter-memcg", 0600,
- hwpoison_dir, &hwpoison_filter_memcg);
- if (!dentry)
- goto fail;
+ debugfs_create_u64("corrupt-filter-memcg", 0600, hwpoison_dir,
+ &hwpoison_filter_memcg);
#endif
return 0;
-fail:
- pfn_inject_exit();
- return -ENOMEM;
}
module_init(pfn_inject_init);