release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/usb/wusbcore/wa-hc.c

   1
   2 #include <linux/slab.h>
   3 #include "wusbhc.h"
   4 #include "wa-hc.h"
   5
   6 /**
   7  * Assumes
   8  *
   9  * wa->usb_dev and wa->usb_iface initialized and refcounted,
  10  * wa->wa_descr initialized.
  11  */
  12 int wa_create(struct wahc *wa, struct usb_interface *iface)
  13 {
  14         int result;
  15         struct device *dev = &iface->dev;
  16
  17         result = wa_rpipes_create(wa);
  18         if (result < 0)
  19                 goto error_rpipes_create;
  20         /* Fill up Data Transfer EP pointers */
  21         wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
  22         wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
  23         wa->xfer_result_size = le16_to_cpu(wa->dti_epd->wMaxPacketSize);
  24         wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL);
  25         if (wa->xfer_result == NULL)
  26                 goto error_xfer_result_alloc;
  27         result = wa_nep_create(wa, iface);
  28         if (result < 0) {
  29                 dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
  30                         result);
  31                 goto error_nep_create;
  32         }
  33         return 0;
  34
  35 error_nep_create:
  36         kfree(wa->xfer_result);
  37 error_xfer_result_alloc:
  38         wa_rpipes_destroy(wa);
  39 error_rpipes_create:
  40         return result;
  41 }
  42 EXPORT_SYMBOL_GPL(wa_create);
  43
  44
  45 void __wa_destroy(struct wahc *wa)
  46 {
  47         if (wa->dti_urb) {
  48                 usb_kill_urb(wa->dti_urb);
  49                 usb_put_urb(wa->dti_urb);
  50                 usb_kill_urb(wa->buf_in_urb);
  51                 usb_put_urb(wa->buf_in_urb);
  52         }
  53         kfree(wa->xfer_result);
  54         wa_nep_destroy(wa);
  55         wa_rpipes_destroy(wa);
  56 }
  57 EXPORT_SYMBOL_GPL(__wa_destroy);
  58
  59 /**
  60  * wa_reset_all - reset the WA device
  61  * @wa: the WA to be reset
  62  *
  63  * For HWAs the radio controller and all other PALs are also reset.
  64  */
  65 void wa_reset_all(struct wahc *wa)
  66 {
  67         wusbhc_reset_all(wa->wusb);
  68 }
  69
  70 MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
  71 MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
  72 MODULE_LICENSE("GPL");