diff options
| author | Mark Ferrell <mferrell@uplogix.com> | 2012-07-24 14:15:13 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-10 11:51:42 -0700 |
| commit | 5c263b92f828af6a8cf54041db45ceae5af8f2ab (patch) | |
| tree | 1922c955cf2458ae9fc9de2125678a157d8882c6 /drivers/usb/serial/mos7840.c | |
| parent | 4840ae17ba7e21f2932120383a2c9a0f30e66123 (diff) | |
usb: serial: mos7840: Fixup mos7840_chars_in_buffer()
* Use the buffer content length as opposed to the total buffer size. This can
be a real problem when using the mos7840 as a usb serial-console as all
kernel output is truncated during boot.
Signed-off-by: Mark Ferrell <mferrell@uplogix.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/serial/mos7840.c')
| -rw-r--r-- | drivers/usb/serial/mos7840.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 57eca2448424..009c1d99e146 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1232,9 +1232,12 @@ static int mos7840_chars_in_buffer(struct tty_struct *tty) return 0; spin_lock_irqsave(&mos7840_port->pool_lock, flags); - for (i = 0; i < NUM_URBS; ++i) - if (mos7840_port->busy[i]) - chars += URB_TRANSFER_BUFFER_SIZE; + for (i = 0; i < NUM_URBS; ++i) { + if (mos7840_port->busy[i]) { + struct urb *urb = mos7840_port->write_urb_pool[i]; + chars += urb->transfer_buffer_length; + } + } spin_unlock_irqrestore(&mos7840_port->pool_lock, flags); dbg("%s - returns %d", __func__, chars); return chars; |