diff options
| author | Mark Ferrell <mferrell@uplogix.com> | 2012-07-24 14:15:13 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-25 19:31:44 -0700 |
| commit | c78b6be08e09f28801116a7098fc298131deb426 (patch) | |
| tree | 6942b2ad9defd7fffe87bff1431e3282355ad808 | |
| parent | d92614d61442853839a574450761defd18b0d5d3 (diff) | |
usb: serial: mos7840: Fixup mos7840_chars_in_buffer()
commit 5c263b92f828af6a8cf54041db45ceae5af8f2ab upstream.
* 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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; |