diff options
Diffstat (limited to 'drivers/usb/core/usb.c')
| -rw-r--r-- | drivers/usb/core/usb.c | 41 |
1 files changed, 30 insertions, 11 deletions
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index 0fee5c66fd64..c99938d5f78e 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -223,6 +223,15 @@ static void ksuspend_usb_cleanup(void) #endif /* CONFIG_PM */ + +/* Returns 1 if @usb_bus is WUSB, 0 otherwise */ +static unsigned usb_bus_is_wusb(struct usb_bus *bus) +{ + struct usb_hcd *hcd = container_of(bus, struct usb_hcd, self); + return hcd->wireless; +} + + /** * usb_alloc_dev - usb device constructor (usbcore-internal) * @parent: hub to which device is connected; null to allocate a root hub @@ -239,6 +248,8 @@ struct usb_device * usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) { struct usb_device *dev; + struct usb_hcd *usb_hcd = container_of(bus, struct usb_hcd, self); + unsigned root_hub = 0; dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) @@ -255,12 +266,14 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) dev->dev.dma_mask = bus->controller->dma_mask; set_dev_node(&dev->dev, dev_to_node(bus->controller)); dev->state = USB_STATE_ATTACHED; + atomic_set(&dev->urbnum, 0); INIT_LIST_HEAD(&dev->ep0.urb_list); dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE; dev->ep0.desc.bDescriptorType = USB_DT_ENDPOINT; /* ep0 maxpacket comes later, from device descriptor */ - dev->ep_in[0] = dev->ep_out[0] = &dev->ep0; + usb_enable_endpoint(dev, &dev->ep0); + dev->can_submit = 1; /* Save readable and stable topology id, distinguishing devices * by location for diagnostics, tools, driver model, etc. The @@ -275,6 +288,7 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) dev->dev.parent = bus->controller; sprintf(&dev->dev.bus_id[0], "usb%d", bus->busnum); + root_hub = 1; } else { /* match any labeling on the hubs; it's one-based */ if (parent->devpath[0] == '0') @@ -301,6 +315,12 @@ usb_alloc_dev(struct usb_device *parent, struct usb_bus *bus, unsigned port1) INIT_DELAYED_WORK(&dev->autosuspend, usb_autosuspend_work); dev->autosuspend_delay = usb_autosuspend_delay * HZ; #endif + if (root_hub) /* Root hub always ok [and always wired] */ + dev->authorized = 1; + else { + dev->authorized = usb_hcd->authorized_default; + dev->wusb = usb_bus_is_wusb(bus)? 1 : 0; + } return dev; } @@ -748,7 +768,7 @@ void usb_buffer_unmap(struct urb *urb) /** * usb_buffer_map_sg - create scatterlist DMA mapping(s) for an endpoint * @dev: device to which the scatterlist will be mapped - * @pipe: endpoint defining the mapping direction + * @is_in: mapping transfer direction * @sg: the scatterlist to map * @nents: the number of entries in the scatterlist * @@ -771,14 +791,13 @@ void usb_buffer_unmap(struct urb *urb) * * Reverse the effect of this call with usb_buffer_unmap_sg(). */ -int usb_buffer_map_sg(const struct usb_device *dev, unsigned pipe, +int usb_buffer_map_sg(const struct usb_device *dev, int is_in, struct scatterlist *sg, int nents) { struct usb_bus *bus; struct device *controller; if (!dev - || usb_pipecontrol(pipe) || !(bus = dev->bus) || !(controller = bus->controller) || !controller->dma_mask) @@ -786,7 +805,7 @@ int usb_buffer_map_sg(const struct usb_device *dev, unsigned pipe, // FIXME generic api broken like pci, can't report errors return dma_map_sg(controller, sg, nents, - usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } /* XXX DISABLED, no users currently. If you wish to re-enable this @@ -799,14 +818,14 @@ int usb_buffer_map_sg(const struct usb_device *dev, unsigned pipe, /** * usb_buffer_dmasync_sg - synchronize DMA and CPU view of scatterlist buffer(s) * @dev: device to which the scatterlist will be mapped - * @pipe: endpoint defining the mapping direction + * @is_in: mapping transfer direction * @sg: the scatterlist to synchronize * @n_hw_ents: the positive return value from usb_buffer_map_sg * * Use this when you are re-using a scatterlist's data buffers for * another USB request. */ -void usb_buffer_dmasync_sg(const struct usb_device *dev, unsigned pipe, +void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in, struct scatterlist *sg, int n_hw_ents) { struct usb_bus *bus; @@ -819,20 +838,20 @@ void usb_buffer_dmasync_sg(const struct usb_device *dev, unsigned pipe, return; dma_sync_sg(controller, sg, n_hw_ents, - usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } #endif /** * usb_buffer_unmap_sg - free DMA mapping(s) for a scatterlist * @dev: device to which the scatterlist will be mapped - * @pipe: endpoint defining the mapping direction + * @is_in: mapping transfer direction * @sg: the scatterlist to unmap * @n_hw_ents: the positive return value from usb_buffer_map_sg * * Reverses the effect of usb_buffer_map_sg(). */ -void usb_buffer_unmap_sg(const struct usb_device *dev, unsigned pipe, +void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in, struct scatterlist *sg, int n_hw_ents) { struct usb_bus *bus; @@ -845,7 +864,7 @@ void usb_buffer_unmap_sg(const struct usb_device *dev, unsigned pipe, return; dma_unmap_sg(controller, sg, n_hw_ents, - usb_pipein(pipe) ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + is_in ? DMA_FROM_DEVICE : DMA_TO_DEVICE); } /* format to disable USB on kernel command line is: nousb */ |