USB: Add stream ID field to struct urb.

Bulk endpoint streams were added in the USB 3.0 specification.  Streams
allow a device driver to overload a bulk endpoint so that multiple
transfers can be queued at once.

Add a new field, stream_id, to struct urb so that USB 3.0 drivers can
specify which stream they want the URB to be queued to.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/usb.h b/include/linux/usb.h
index e32a849f81c..191af498c4f 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -1196,6 +1196,7 @@ struct urb {
         struct usb_device *dev;         /* (in) pointer to associated device */
         struct usb_host_endpoint *ep;   /* (internal) pointer to endpoint */
         unsigned int pipe;              /* (in) pipe information */
+        unsigned int stream_id;         /* (in) stream ID */
         int status;                     /* (return) non-ISO status */
         unsigned int transfer_flags;    /* (in) URB_SHORT_NOT_OK | ...*/
         void *transfer_buffer;          /* (in) associated data buffer */