*/
#include <linux/config.h>
-
-#ifdef CONFIG_USB_DEBUG
- #define DEBUG
-#else
- #undef DEBUG
-#endif
-
#include <linux/pci.h> /* for scatterlist macros */
#include <linux/usb.h>
#include <linux/module.h>
#include <linux/ctype.h>
#include <linux/device.h>
#include <asm/byteorder.h>
+#include <asm/scatterlist.h>
#include "hcd.h" /* for usbcore internals */
#include "usb.h"
init_completion(&done);
urb->context = &done;
- urb->transfer_flags |= URB_ASYNC_UNLINK;
urb->actual_length = 0;
status = usb_submit_urb(urb, GFP_NOIO);
* If a thread in your driver uses this call, make sure your disconnect()
* method can wait for it to complete. Since you don't have a handle on
* the URB used, you can't cancel the request.
+ *
+ * Because there is no usb_interrupt_msg() and no USBDEVFS_INTERRUPT
+ * ioctl, users are forced to abuse this routine by using it to submit
+ * URBs for interrupt endpoints. We will take the liberty of creating
+ * an interrupt URB (with the default interval) if the target is an
+ * interrupt endpoint.
*/
int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
void *data, int len, int *actual_length, int timeout)
{
struct urb *urb;
+ struct usb_host_endpoint *ep;
- if (len < 0)
+ ep = (usb_pipein(pipe) ? usb_dev->ep_in : usb_dev->ep_out)
+ [usb_pipeendpoint(pipe)];
+ if (!ep || len < 0)
return -EINVAL;
- urb=usb_alloc_urb(0, GFP_KERNEL);
+ urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb)
return -ENOMEM;
- usb_fill_bulk_urb(urb, usb_dev, pipe, data, len,
- usb_api_blocking_completion, NULL);
+ if ((ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
+ USB_ENDPOINT_XFER_INT) {
+ pipe = (pipe & ~(3 << 30)) | (PIPE_INTERRUPT << 30);
+ usb_fill_int_urb(urb, usb_dev, pipe, data, len,
+ usb_api_blocking_completion, NULL,
+ ep->desc.bInterval);
+ } else
+ usb_fill_bulk_urb(urb, usb_dev, pipe, data, len,
+ usb_api_blocking_completion, NULL);
return usb_start_wait_urb(urb, timeout, actual_length);
}
continue;
if (found) {
status = usb_unlink_urb (io->urbs [i]);
- if (status != -EINPROGRESS && status != -EBUSY)
+ if (status != -EINPROGRESS
+ && status != -ENODEV
+ && status != -EBUSY)
dev_err (&io->dev->dev,
"%s, unlink --> %d\n",
__FUNCTION__, status);
struct scatterlist *sg,
int nents,
size_t length,
- int mem_flags
+ gfp_t mem_flags
)
{
int i;
if (!io->urbs)
goto nomem;
- urb_flags = URB_ASYNC_UNLINK | URB_NO_TRANSFER_DMA_MAP
- | URB_NO_INTERRUPT;
+ urb_flags = URB_NO_TRANSFER_DMA_MAP | URB_NO_INTERRUPT;
if (usb_pipein (pipe))
urb_flags |= URB_SHORT_NOT_OK;
* Returns the number of bytes received on success, or else the status code
* returned by the underlying usb_control_msg() call.
*/
-int usb_get_string(struct usb_device *dev, unsigned short langid,
- unsigned char index, void *buf, int size)
+static int usb_get_string(struct usb_device *dev, unsigned short langid,
+ unsigned char index, void *buf, int size)
{
int i;
int result;
return err;
}
+/**
+ * usb_cache_string - read a string descriptor and cache it for later use
+ * @udev: the device whose string descriptor is being read
+ * @index: the descriptor index
+ *
+ * Returns a pointer to a kmalloc'ed buffer containing the descriptor string,
+ * or NULL if the index is 0 or the string could not be read.
+ */
+char *usb_cache_string(struct usb_device *udev, int index)
+{
+ char *buf;
+ char *smallbuf = NULL;
+ int len;
+
+ if (index > 0 && (buf = kmalloc(256, GFP_KERNEL)) != NULL) {
+ if ((len = usb_string(udev, index, buf, 256)) > 0) {
+ if ((smallbuf = kmalloc(++len, GFP_KERNEL)) == NULL)
+ return buf;
+ memcpy(smallbuf, buf, len);
+ }
+ kfree(buf);
+ }
+ return smallbuf;
+}
+
/*
* usb_get_device_descriptor - (re)reads the device descriptor (usbcore)
* @dev: the device whose device descriptor is being updated
for (i = 0; i < dev->actconfig->desc.bNumInterfaces; i++) {
struct usb_interface *interface;
- /* remove this interface */
+ /* remove this interface if it has been registered */
interface = dev->actconfig->interface[i];
+ if (!device_is_registered(&interface->dev))
+ continue;
dev_dbg (&dev->dev, "unregistering interface %s\n",
interface->dev.bus_id);
usb_remove_sysfs_intf_files(interface);
- kfree(interface->cur_altsetting->string);
- interface->cur_altsetting->string = NULL;
device_del (&interface->dev);
}
*/
/* prevent submissions using previous endpoint settings */
+ if (device_is_registered(&iface->dev))
+ usb_remove_sysfs_intf_files(iface);
usb_disable_interface(dev, iface);
iface->cur_altsetting = alt;
* (Likewise, EP0 never "halts" on well designed devices.)
*/
usb_enable_interface(dev, iface);
+ if (device_is_registered(&iface->dev))
+ usb_create_sysfs_intf_files(iface);
return 0;
}
USB_REQ_SET_CONFIGURATION, 0,
config->desc.bConfigurationValue, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT);
- if (retval < 0) {
- usb_set_device_state(dev, USB_STATE_ADDRESS);
+ if (retval < 0)
return retval;
- }
dev->toggle[0] = dev->toggle[1] = 0;
struct usb_interface *intf = config->interface[i];
struct usb_host_interface *alt;
+ if (device_is_registered(&intf->dev))
+ usb_remove_sysfs_intf_files(intf);
alt = usb_altnum_to_altsetting(intf, 0);
/* No altsetting 0? We'll assume the first altsetting.
intf->cur_altsetting = alt;
usb_enable_interface(dev, intf);
+ if (device_is_registered(&intf->dev))
+ usb_create_sysfs_intf_files(intf);
}
return 0;
}
}
for (; n < nintf; ++n) {
- new_interfaces[n] = kmalloc(
+ new_interfaces[n] = kzalloc(
sizeof(struct usb_interface),
GFP_KERNEL);
if (!new_interfaces[n]) {
if (dev->state != USB_STATE_ADDRESS)
usb_disable_device (dev, 1); // Skip ep0
+ if (cp) {
+ i = dev->bus_mA - cp->desc.bMaxPower * 2;
+ if (i < 0)
+ dev_warn(&dev->dev, "new config #%d exceeds power "
+ "limit by %dmA\n",
+ configuration, -i);
+ }
+
if ((ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
USB_REQ_SET_CONFIGURATION, 0, configuration, 0,
NULL, 0, USB_CTRL_SET_TIMEOUT)) < 0)
struct usb_host_interface *alt;
cp->interface[i] = intf = new_interfaces[i];
- memset(intf, 0, sizeof(*intf));
intfc = cp->intf_cache[i];
intf->altsetting = intfc->altsetting;
intf->num_altsetting = intfc->num_altsetting;
intf->dev.dma_mask = dev->dev.dma_mask;
intf->dev.release = release_interface;
device_initialize (&intf->dev);
+ mark_quiesced(intf);
sprintf (&intf->dev.bus_id[0], "%d-%s:%d.%d",
dev->bus->busnum, dev->devpath,
configuration,
}
kfree(new_interfaces);
- if ((cp->desc.iConfiguration) &&
- (cp->string == NULL)) {
- cp->string = kmalloc(256, GFP_KERNEL);
- if (cp->string)
- usb_string(dev, cp->desc.iConfiguration, cp->string, 256);
- }
+ if (cp->string == NULL)
+ cp->string = usb_cache_string(dev,
+ cp->desc.iConfiguration);
/* Now that all the interfaces are set up, register them
* to trigger binding of drivers to interfaces. probe()
*/
for (i = 0; i < nintf; ++i) {
struct usb_interface *intf = cp->interface[i];
- struct usb_interface_descriptor *desc;
- desc = &intf->altsetting [0].desc;
dev_dbg (&dev->dev,
"adding %s (config #%d, interface %d)\n",
intf->dev.bus_id, configuration,
- desc->bInterfaceNumber);
+ intf->cur_altsetting->desc.bInterfaceNumber);
ret = device_add (&intf->dev);
if (ret != 0) {
dev_err(&dev->dev,
ret);
continue;
}
- if ((intf->cur_altsetting->desc.iInterface) &&
- (intf->cur_altsetting->string == NULL)) {
- intf->cur_altsetting->string = kmalloc(256, GFP_KERNEL);
- if (intf->cur_altsetting->string)
- usb_string(dev, intf->cur_altsetting->desc.iInterface,
- intf->cur_altsetting->string, 256);
- }
usb_create_sysfs_intf_files (intf);
}
}
- return ret;
+ return 0;
}
// synchronous request completion model
// synchronous control message convenience routines
EXPORT_SYMBOL(usb_get_descriptor);
EXPORT_SYMBOL(usb_get_status);
-EXPORT_SYMBOL(usb_get_string);
EXPORT_SYMBOL(usb_string);
// synchronous calls that also maintain usbcore state
git://git.onelab.eu / linux-2.6.git / blobdiff