From: Marcel Holtmann <marcel@holtmann.org>
Date: Fri, 15 Aug 2014 19:43:37 +0000 (+0200)
Subject: handle: Return POLLOUT | POLLWRNORM mask when no messages are pending
X-Git-Tag: upstream/0.20140911.160207utc~44
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8f39898bacf863002eb74dbab80fdf882e08698d;p=platform%2Fcore%2Fsystem%2Fkdbus-bus.git

handle: Return POLLOUT | POLLWRNORM mask when no messages are pending

To facility the feature of doing an asynchronous sending of messages
when the bus is idle, make sure to return POLLOUT | POLLWRNORM from
kdbus_handle_poll.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
---

diff --git a/handle.c b/handle.c
index ac68681..fc15d28 100644
--- a/handle.c
+++ b/handle.c
@@ -884,6 +884,8 @@ static unsigned int kdbus_handle_poll(struct file *file,
 		mask |= POLLERR | POLLHUP;
 	else if (!list_empty(&conn->msg_list))
 		mask |= POLLIN | POLLRDNORM;
+	else
+		mask |= POLLOUT | POLLWRNORM;
 	mutex_unlock(&conn->lock);
 
 	return mask;