Commit 1c8542c7 authored by Li Zefan's avatar Li Zefan Committed by Al Viro
Browse files

sysfs: use memdup_user()



Remove open-coded memdup_user().
Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent dae7b665
......@@ -157,14 +157,9 @@ static ssize_t write(struct file *file, const char __user *userbuf,
count = size - offs;
}
temp = kmalloc(count, GFP_KERNEL);
if (!temp)
return -ENOMEM;
if (copy_from_user(temp, userbuf, count)) {
count = -EFAULT;
goto out_free;
}
temp = memdup_user(userbuf, count);
if (IS_ERR(temp))
return PTR_ERR(temp);
mutex_lock(&bb->mutex);
......@@ -176,8 +171,6 @@ static ssize_t write(struct file *file, const char __user *userbuf,
if (count > 0)
*off = offs + count;
out_free:
kfree(temp);
return count;
}
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment