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debugfs: Re-use kstrtobool_from_user() 

Re-use kstrtobool_from_user() instead of open coded variant.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2018-05-03 19:17:52 +03:00 committed by Greg Kroah-Hartman
parent f0a462970e
commit 964f8363a1
1 changed files with 2 additions and 8 deletions
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10
fs/debugfs/file.c
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@ -796,19 +796,13 @@ EXPORT_SYMBOL_GPL(debugfs_read_file_bool);
ssize_t debugfs_write_file_bool(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
char buf[32];
size_t buf_size;
bool bv;
int r;
bool *val = file->private_data;
struct dentry *dentry = F_DENTRY(file);
buf_size = min(count, (sizeof(buf)-1));
if (copy_from_user(buf, user_buf, buf_size))
return -EFAULT;
buf[buf_size] = '\0';
if (strtobool(buf, &bv) == 0) {
r = kstrtobool_from_user(user_buf, count, &bv);
if (!r) {
r = debugfs_file_get(dentry);
if (unlikely(r))
return r;