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USB: ch341: clean up interrupt handler 

Clean up interrupt completion handler somewhat.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2014-01-02 22:49:33 +01:00 committed by Greg Kroah-Hartman
parent 5e409a265d
commit 271ec2d2d7
1 changed files with 9 additions and 10 deletions
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19
drivers/usb/serial/ch341.c
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@ -484,9 +484,9 @@ static void ch341_update_line_status(struct usb_serial_port *port,
static void ch341_read_int_callback(struct urb *urb)
{
struct usb_serial_port *port = (struct usb_serial_port *) urb->context;
struct usb_serial_port *port = urb->context;
unsigned char *data = urb->transfer_buffer;
unsigned int actual_length = urb->actual_length;
unsigned int len = urb->actual_length;
int status;
switch (urb->status) {
@ -497,24 +497,23 @@ static void ch341_read_int_callback(struct urb *urb)
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dev_dbg(&urb->dev->dev, "%s - urb shutting down with status: %d\n",
dev_dbg(&urb->dev->dev, "%s - urb shutting down: %d\n",
__func__, urb->status);
return;
default:
dev_dbg(&urb->dev->dev, "%s - nonzero urb status received: %d\n",
dev_dbg(&urb->dev->dev, "%s - nonzero urb status: %d\n",
__func__, urb->status);
goto exit;
}
usb_serial_debug_data(&port->dev, __func__,
urb->actual_length, urb->transfer_buffer);
ch341_update_line_status(port, data, actual_length);
usb_serial_debug_data(&port->dev, __func__, len, data);
ch341_update_line_status(port, data, len);
exit:
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status)
dev_err(&urb->dev->dev,
"%s - usb_submit_urb failed with result %d\n",
if (status) {
dev_err(&urb->dev->dev, "%s - usb_submit_urb failed: %d\n",
__func__, status);
}
}
static int ch341_tiocmget(struct tty_struct *tty)