greybus: short message is OK for errors
We enforce a rule that a response message must completely fill the
buffer that's been allocated to hold it. However, if an error
occurs, the payload is off limits, so we should allow a short
message to convey an error result.
Change gb_connection_recv_response() to require the right message
size only if there's no error.
One other thing: The arriving data is only being copied into the
response buffer if the request was successful. That means the
response message header is assumed to have been initialized. That
isn't a valid assumption. So change it so that if an error is
seen, the header portion of the message is copied into the
response buffer--but only the header.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
1 file changed
tree: 180396d507844c3dacec795822bdb799f1ae87af
- drivers/