/**
* wq_clear_halt - work queue function
* @wq_obj: work_struct object to execute
*
* This sends a clear_halt to the given USB pipe.
*/
static void wq_clear_halt(struct work_struct *wq_obj)
{
struct clear_hold_work *clear_work = to_clear_hold_work(wq_obj);
struct most_dev *mdev = clear_work->mdev;
unsigned int channel = clear_work->channel;
int pipe = clear_work->pipe;
mutex_lock(&mdev->io_mutex);
most_stop_enqueue(&mdev->iface, channel);
usb_kill_anchored_urbs(&mdev->busy_urbs[channel]);
if (usb_clear_halt(mdev->usb_device, pipe))
dev_warn(&mdev->usb_device->dev, "Failed to reset endpoint.\n");
/* If the functional Stall condition has been set on an
* asynchronous rx channel, we need to clear the tx channel
* too, since the hardware runs its clean-up sequence on both
* channels, as they are physically one on the network.
*
* The USB interface that exposes the asynchronous channels
* contains always two endpoints, and two only.
*/
if (mdev->conf[channel].data_type == MOST_CH_ASYNC &&
mdev->conf[channel].direction == MOST_CH_RX) {
int peer = 1 - channel;
int snd_pipe = usb_sndbulkpipe(mdev->usb_device,
mdev->ep_address[peer]);
usb_clear_halt(mdev->usb_device, snd_pipe);
}
mdev->is_channel_healthy[channel] = true;
most_resume_enqueue(&mdev->iface, channel);
mutex_unlock(&mdev->io_mutex);
}
/**
* wq_clear_halt - work queue function
* @wq_obj: work_struct object to execute
*
* This sends a clear_halt to the given USB pipe.
*/
static void wq_clear_halt(struct work_struct *wq_obj)
{
struct clear_hold_work *clear_work = to_clear_hold_work(wq_obj);
struct most_dev *mdev = clear_work->mdev;
unsigned int channel = clear_work->channel;
int pipe = clear_work->pipe;
mutex_lock(&mdev->io_mutex);
most_stop_enqueue(&mdev->iface, channel);
free_anchored_buffers(mdev, channel, MBO_E_INVAL);
if (usb_clear_halt(mdev->usb_device, pipe))
dev_warn(&mdev->usb_device->dev, "Failed to reset endpoint.\n");
mdev->is_channel_healthy[channel] = true;
most_resume_enqueue(&mdev->iface, channel);
mutex_unlock(&mdev->io_mutex);
}
