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Commit 94af1220 authored by Sarah Sharp's avatar Sarah Sharp Committed by Greg Kroah-Hartman
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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: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 22ad1e7f

include/linux/usb.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */