static int simple_io(
struct usbtest_dev *tdev,
struct urb *urb,
int iterations,
int vary,
int expected,
const char *label
)
{
struct usb_device *udev = urb->dev;
int max = urb->transfer_buffer_length;
struct completion completion;
int retval = 0;
urb->context = &completion;
while (retval == 0 && iterations-- > 0) {
init_completion(&completion);
if (usb_pipeout(urb->pipe)) {
simple_fill_buf(urb);
urb->transfer_flags |= URB_ZERO_PACKET;
}
retval = usb_submit_urb(urb, GFP_KERNEL);
if (retval != 0)
break;
wait_for_completion(&completion);
retval = urb->status;
urb->dev = udev;
if (retval == 0 && usb_pipein(urb->pipe))
retval = simple_check_buf(tdev, urb);
if (vary) {
int len = urb->transfer_buffer_length;
len += vary;
len %= max;
if (len == 0)
len = (vary < max) ? vary : max;
urb->transfer_buffer_length = len;
}
}
urb->transfer_buffer_length = max;
if (expected != retval)
dev_err(&udev->dev,
"%s failed, iterations left %d, status %d (not %d)\n",
label, iterations, retval, expected);
return retval;
}
static int simple_io(
struct usbtest_dev *tdev,
struct urb *urb,
int iterations,
int vary,
int expected,
const char *label
)
{
struct usb_device *udev = urb->dev;
int max = urb->transfer_buffer_length;
struct completion completion;
int retval = 0;
urb->context = &completion;
while (retval == 0 && iterations-- > 0) {
init_completion(&completion);
if (usb_pipeout(urb->pipe))
simple_fill_buf(urb);
retval = usb_submit_urb(urb, GFP_KERNEL);
if (retval != 0)
break;
/* NOTE: no timeouts; can't be broken out of by interrupt */
wait_for_completion(&completion);
retval = urb->status;
urb->dev = udev;
if (retval == 0 && usb_pipein(urb->pipe))
retval = simple_check_buf(tdev, urb);
if (vary) {
int len = urb->transfer_buffer_length;
len += vary;
len %= max;
if (len == 0)
len = (vary < max) ? vary : max;
urb->transfer_buffer_length = len;
}
/* FIXME if endpoint halted, clear halt (and log) */
}
urb->transfer_buffer_length = max;
if (expected != retval)
dev_err(&udev->dev,
"%s failed, iterations left %d, status %d (not %d)\n",
label, iterations, retval, expected);
return retval;
}
