Commit 4a655ad4 authored by Bryan O'Donoghue's avatar Bryan O'Donoghue Committed by Greg Kroah-Hartman
Browse files

greybus: loopback: add response len to loopback protocol 



This patch adds a len field to the loopback protocol.
This field is validated in gb_loopback_transfer() and stuffed in
gb_loopback_request_recv().

Signed-off-by: default avatarBryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: default avatarPatrick Titiano <ptitiano@baylibre.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent f2cfa704

drivers/staging/greybus/greybus_protocols.h

+1 −0
Original line number Diff line number Diff line
@@ -917,6 +917,7 @@ struct gb_loopback_transfer_request { 
} __packed;



struct gb_loopback_transfer_response {

	__le32	len;

	__u8	data[0];

} __packed;

drivers/staging/greybus/loopback.c

+1 −0
Original line number Diff line number Diff line
@@ -524,6 +524,7 @@ static int gb_loopback_request_recv(u8 type, struct gb_operation *operation) 
				return -ENOMEM;

			}

			response = operation->response->payload;

			response->len = cpu_to_le32(len);

			memcpy(response->data, request->data, len);

		}

		return 0;