Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

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

fs/sysfs/bin.c

+3 −10
Original line number Diff line number Diff line
@@ -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;

}