Commit 39ae5f1e authored Jul 19, 2017 by dan.carpenter@oracle.com Committed by Greg Kroah-Hartman Jul 28, 2017

staging: pi433: return -EFAULT if copy_to_user() fails



copy_to_user() to user returns the number of bytes that weren't copied,
but we should be returning -EFAULT to the user.

Fixes: 874bcba6 ("staging: pi433: New driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent a7b1ba23

drivers/staging/pi433/pi433_if.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -689,7 +689,7 @@ pi433_read(struct file filp, char __user buf, size_t size, loff_t *f_pos)
		{
		retval = copy_to_user(buf, device->rx_buffer, bytes_received);
		if (retval)
		return retval;
		return -EFAULT;
		}

		return bytes_received;