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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: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Johan Hovold 2010-05-19 00:01:41 +02:00 committed by Greg Kroah-Hartman
parent 60b3013cda
commit c1aa075acb
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/serial/ftdi_sio.c
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@ -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);