From: Axel Haslam <ahaslam@baylibre.com>
Date: Wed, 10 Feb 2016 13:19:29 +0000 (+0100)
Subject: greybus: loopback: Add reserved fields to transfer request
X-Git-Tag: v4.9-rc1~119^2~378^2~21^2~676
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=b59281ac077414d879e66798f8e44eb976967814;p=linux.git

greybus: loopback: Add reserved fields to transfer request

All loopback transfer operations should have an identical header
format in order to facilitate bandwidth and data movement analysis.

Suggested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Axel Haslam <ahaslam@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
---

diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h
index cd64ac84dad2..6b192924a566 100644
--- a/drivers/staging/greybus/greybus_protocols.h
+++ b/drivers/staging/greybus/greybus_protocols.h
@@ -1053,8 +1053,14 @@ struct gb_uart_serial_state_request {
 #define GB_LOOPBACK_TYPE_TRANSFER		0x03
 #define GB_LOOPBACK_TYPE_SINK			0x04
 
+/*
+ * Loopback request/response header format should be identical
+ * to simplify bandwidth and data movement analysis.
+ */
 struct gb_loopback_transfer_request {
 	__le32	len;
+	__le32  reserved0;
+	__le32  reserved1;
 	__u8	data[0];
 } __packed;