Commit d52b35f6 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
Browse files

greybus: operation: add helper to retrieve max payload size 



Add helper to retrieve the maximum payload size for operations on a
specific connection.

Note that the helper is not inlined due to how the header files are
currently organised, but it is not expected to be called after a
connection has been initialised either.

Signed-off-by: default avatarJohan Hovold <johan@hovoldconsulting.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 8e929a82

drivers/staging/greybus/operation.c

+8 −0
Original line number Diff line number Diff line
@@ -504,6 +504,14 @@ struct gb_operation *gb_operation_create(struct gb_connection *connection, 
}

EXPORT_SYMBOL_GPL(gb_operation_create);



size_t gb_operation_get_payload_size_max(struct gb_connection *connection)

{

	struct greybus_host_device *hd = connection->hd;



	return hd->buffer_size_max - sizeof(struct gb_operation_msg_hdr);

}

EXPORT_SYMBOL_GPL(gb_operation_get_payload_size_max);



static struct gb_operation *

gb_operation_create_incoming(struct gb_connection *connection, u16 id,

				u8 type, void *data, size_t size)

drivers/staging/greybus/operation.h

+1 −0
Original line number Diff line number Diff line
@@ -130,6 +130,7 @@ void gb_connection_recv(struct gb_connection *connection, 


int gb_operation_result(struct gb_operation *operation);



size_t gb_operation_get_payload_size_max(struct gb_connection *connection);

struct gb_operation *gb_operation_create(struct gb_connection *connection,

					u8 type, size_t request_size,

					size_t response_size);