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Commit c1aa075a authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
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USB: ftdi_sio: fix legacy SIO-device header 



Length field of header was incorrectly set to available payload space
rather than the actual payload size.

Signed-off-by: default avatarJohan Hovold <jhovold@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 60b3013c

drivers/usb/serial/ftdi_sio.c

+1 −1
Original line number Diff line number Diff line
@@ -1752,10 +1752,10 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, 
		spin_lock_irqsave(&port->lock, flags);

		for (i = 0; i < size - 1; i += priv->max_packet_size) {

			len = min_t(int, size - i, priv->max_packet_size) - 1;

			buffer[i] = (len << 2) + 1;

			c = kfifo_out(&port->write_fifo, &buffer[i + 1], len);

			if (!c)

				break;

			buffer[i] = (c << 2) + 1;

			count += c + 1;

		}

		spin_unlock_irqrestore(&port->lock, flags);