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authorAlan Stern <stern@rowland.harvard.edu>2007-07-30 17:04:37 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2007-10-12 14:55:00 -0700
commit5b653c79c04c6b152b8dc7d18f8c8a7f77f4b235 (patch)
tree4ab74a90333751269f277789c3f45f7c06d07e14 /include/linux/usb.h
parenta96173af521a173f45d3a27fa24265081f12e978 (diff)
USB: add urb->ep
This patch (as943) prepares the way for eliminating urb->pipe by introducing an endpoint pointer into struct urb. For now urb->ep is set by usb_submit_urb() from the pipe value; eventually drivers will set it themselves and we will remove urb->pipe completely. The patch also adds new inline routines to retrieve an endpoint descriptor's number and transfer type, essentially as replacements for usb_pipeendpoint and usb_pipetype. usb_submit_urb(), usb_hcd_submit_urb(), and usb_hcd_unlink_urb() are converted to use the new field and new routines. Other parts of usbcore will be converted in later patches. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/usb.h')
-rw-r--r--include/linux/usb.h26
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/usb.h b/include/linux/usb.h
index 4f33a58fa9d1..105e3e9362d0 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -555,6 +555,29 @@ static inline int usb_make_path (struct usb_device *dev, char *buf,
/*-------------------------------------------------------------------------*/
/**
+ * usb_endpoint_num - get the endpoint's number
+ * @epd: endpoint to be checked
+ *
+ * Returns @epd's number: 0 to 15.
+ */
+static inline int usb_endpoint_num(const struct usb_endpoint_descriptor *epd)
+{
+ return epd->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+}
+
+/**
+ * usb_endpoint_type - get the endpoint's transfer type
+ * @epd: endpoint to be checked
+ *
+ * Returns one of USB_ENDPOINT_XFER_{CONTROL, ISOC, BULK, INT} according
+ * to @epd's transfer type.
+ */
+static inline int usb_endpoint_type(const struct usb_endpoint_descriptor *epd)
+{
+ return epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+}
+
+/**
* usb_endpoint_dir_in - check if the endpoint has IN direction
* @epd: endpoint to be checked
*
@@ -1037,6 +1060,8 @@ typedef void (*usb_complete_t)(struct urb *);
* @urb_list: For use by current owner of the URB.
* @anchor_list: membership in the list of an anchor
* @anchor: to anchor URBs to a common mooring
+ * @ep: Points to the endpoint's data structure. Will eventually
+ * replace @pipe.
* @pipe: Holds endpoint number, direction, type, and more.
* Create these values with the eight macros available;
* usb_{snd,rcv}TYPEpipe(dev,endpoint), where the TYPE is "ctrl"
@@ -1212,6 +1237,7 @@ struct urb
struct list_head anchor_list; /* the URB may be anchored by the driver */
struct usb_anchor *anchor;
struct usb_device *dev; /* (in) pointer to associated device */
+ struct usb_host_endpoint *ep; /* (internal) pointer to endpoint struct */
unsigned int pipe; /* (in) pipe information */
int status; /* (return) non-ISO status */
unsigned int transfer_flags; /* (in) URB_SHORT_NOT_OK | ...*/