From: Jassi Brar <jassisinghbrar@gmail.com>
Date: Fri, 12 Dec 2014 09:52:49 +0000 (+0530)
Subject: mailbox: check for bit set before polling
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=01340df8d3cd4d8f1773d5f1f569b77bbfce31ad;p=linux-beck.git

mailbox: check for bit set before polling

Before polling we just need to see if the TXDONE_BY_POLL bit
is set in txdone_method. There may be another bit (method)
specified as well, like TXDONE_BY_ACK.

Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
---

diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c
index 59aad4d5da53..19b491d2964f 100644
--- a/drivers/mailbox/mailbox.c
+++ b/drivers/mailbox/mailbox.c
@@ -87,7 +87,7 @@ static void msg_submit(struct mbox_chan *chan)
 exit:
 	spin_unlock_irqrestore(&chan->lock, flags);
 
-	if (!err && chan->txdone_method == TXDONE_BY_POLL)
+	if (!err && (chan->txdone_method & TXDONE_BY_POLL))
 		poll_txdone((unsigned long)chan->mbox);
 }