From 27e54a5d36aba23276d30bd61b962916dca7a946 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Mon, 18 Jan 2010 18:23:09 +0100 Subject: [PATCH] additional debugging --- drivers/usb/serial/generic.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index f1ea3a3..76e5514 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -283,6 +283,8 @@ static int usb_serial_generic_write_start(struct usb_serial_port *port) if (!start_io) return 0; + + dbg("%s - starting IO", __func__); data = port->write_urb->transfer_buffer; count = kfifo_out_locked(&port->write_fifo, data, port->bulk_out_size, &port->lock); @@ -330,7 +332,7 @@ int usb_serial_generic_write(struct tty_struct *tty, struct usb_serial *serial = port->serial; int result; - dbg("%s - port %d", __func__, port->number); + dbg("%s - port %d, %d bytes", __func__, port->number, count); if (count == 0) { dbg("%s - write request of 0 bytes", __func__); @@ -346,6 +348,7 @@ int usb_serial_generic_write(struct tty_struct *tty, buf, count); count = kfifo_in_locked(&port->write_fifo, buf, count, &port->lock); + dbg("%s - put %d bytes into fifo", __func__, count); result = usb_serial_generic_write_start(port); if (result >= 0) -- 1.6.4.2