diff options
Diffstat (limited to 'drivers/mfd/dln2.c')
| -rw-r--r-- | drivers/mfd/dln2.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/mfd/dln2.c b/drivers/mfd/dln2.c index 381593fbe50f..707f4287ab4a 100644 --- a/drivers/mfd/dln2.c +++ b/drivers/mfd/dln2.c @@ -90,6 +90,11 @@ struct dln2_mod_rx_slots { spinlock_t lock; }; +enum dln2_endpoint { + DLN2_EP_OUT = 0, + DLN2_EP_IN = 1, +}; + struct dln2_dev { struct usb_device *usb_dev; struct usb_interface *interface; @@ -282,7 +287,11 @@ static void dln2_rx(struct urb *urb) len = urb->actual_length - sizeof(struct dln2_header); if (handle == DLN2_HANDLE_EVENT) { + unsigned long flags; + + spin_lock_irqsave(&dln2->event_cb_lock, flags); dln2_run_event_callbacks(dln2, id, echo, data, len); + spin_unlock_irqrestore(&dln2->event_cb_lock, flags); } else { /* URB will be re-submitted in _dln2_transfer (free_rx_slot) */ if (dln2_transfer_complete(dln2, urb, handle, echo)) @@ -722,6 +731,8 @@ static int dln2_probe(struct usb_interface *interface, const struct usb_device_id *usb_id) { struct usb_host_interface *hostif = interface->cur_altsetting; + struct usb_endpoint_descriptor *epin; + struct usb_endpoint_descriptor *epout; struct device *dev = &interface->dev; struct dln2_dev *dln2; int ret; @@ -731,12 +742,19 @@ static int dln2_probe(struct usb_interface *interface, hostif->desc.bNumEndpoints < 2) return -ENODEV; + epout = &hostif->endpoint[DLN2_EP_OUT].desc; + if (!usb_endpoint_is_bulk_out(epout)) + return -ENODEV; + epin = &hostif->endpoint[DLN2_EP_IN].desc; + if (!usb_endpoint_is_bulk_in(epin)) + return -ENODEV; + dln2 = kzalloc(sizeof(*dln2), GFP_KERNEL); if (!dln2) return -ENOMEM; - dln2->ep_out = hostif->endpoint[0].desc.bEndpointAddress; - dln2->ep_in = hostif->endpoint[1].desc.bEndpointAddress; + dln2->ep_out = epout->bEndpointAddress; + dln2->ep_in = epin->bEndpointAddress; dln2->usb_dev = usb_get_dev(interface_to_usbdev(interface)); dln2->interface = interface; usb_set_intfdata(interface, dln2); |