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greybus: operation: add support for incoming unidirectional operations 

Add support for incoming, unidirectional operations where the sender of
a request does not care about a response.

Unidirectional operations have an operation id of 0.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Johan Hovold 2015-05-26 15:29:18 +02:00 committed by Greg Kroah-Hartman
parent d67a39ab38
commit 1d771fe41e
1 changed files with 4 additions and 0 deletions
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4
drivers/staging/greybus/operation.c
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@ -686,6 +686,10 @@ int gb_operation_response_send(struct gb_operation *operation, int errno)
return -EIO; /* Shouldn't happen */
}
/* Sender of request does not care about response. */
if (!operation->id)
return 0;
if (!operation->response) {
if (!gb_operation_response_alloc(operation, 0)) {
dev_err(&connection->dev,