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USB: Add stream ID field to struct urb.

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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>
This commit is contained in:
Sarah Sharp 2010-04-02 15:34:10 -07:00 committed by Greg Kroah-Hartman
parent 22ad1e7f86
commit 94af122098
1 changed files with 1 additions and 0 deletions
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include/linux/usb.h
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@ -1196,6 +1196,7 @@ struct urb {
struct usb_device *dev; /* (in) pointer to associated device */ struct usb_device *dev; /* (in) pointer to associated device */
struct usb_host_endpoint *ep; /* (internal) pointer to endpoint */ struct usb_host_endpoint *ep; /* (internal) pointer to endpoint */
unsigned int pipe; /* (in) pipe information */ unsigned int pipe; /* (in) pipe information */
unsigned int stream_id; /* (in) stream ID */
int status; /* (return) non-ISO status */ int status; /* (return) non-ISO status */
unsigned int transfer_flags; /* (in) URB_SHORT_NOT_OK | ...*/ unsigned int transfer_flags; /* (in) URB_SHORT_NOT_OK | ...*/
void *transfer_buffer; /* (in) associated data buffer */ void *transfer_buffer; /* (in) associated data buffer */