[PATCH 09/10] usb/uas: add usb_pipe_usage_descriptor

[ming.lei at canonical.com]

From: Sebastian Andrzej Siewior <bigeasy at linutronix.de>

usb_pipe_usage_descriptor defines the struct which is used to describe
the type of the endpoint in UAS (status/command/data in+out). It will be
used by the UAS gadget, the host code is using a char array for the
access.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
Signed-off-by: Sarah Sharp <sarah.a.sharp at linux.intel.com>
---
 include/linux/usb/uas.h |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/usb/uas.h b/include/linux/usb/uas.h
index 856be7f..9a988e4 100644
--- a/include/linux/usb/uas.h
+++ b/include/linux/usb/uas.h
@@ -47,6 +47,14 @@ struct sense_iu {
 	__u8 sense[SCSI_SENSE_BUFFERSIZE];
 };
 
+struct usb_pipe_usage_descriptor {
+	__u8  bLength;
+	__u8  bDescriptorType;
+
+	__u8  bPipeID;
+	__u8  Reserved;
+} __attribute__((__packed__));
+
 enum {
 	CMD_PIPE_ID		= 1,
 	STATUS_PIPE_ID		= 2,
-- 
1.7.9.5