Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b7133d6f authored by Bjorn Andersson's avatar Bjorn Andersson Committed by Jassi Brar
Browse files

mailbox: Make startup and shutdown ops optional 



Some mailbox hardware doesn't have to perform any additional operations
on startup of shutdown, so make these optional.

Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: default avatarJassi Brar <jaswinder.singh@linaro.org>
parent 63f700aa

drivers/mailbox/mailbox.c

+10 −6
Original line number Diff line number Diff line
@@ -355,12 +355,15 @@ struct mbox_chan *mbox_request_channel(struct mbox_client *cl, int index) 


	spin_unlock_irqrestore(&chan->lock, flags);



	if (chan->mbox->ops->startup) {

		ret = chan->mbox->ops->startup(chan);



		if (ret) {

			dev_err(dev, "Unable to startup the chan (%d)\n", ret);

			mbox_free_channel(chan);

			chan = ERR_PTR(ret);

		}

	}



	mutex_unlock(&con_mutex);

	return chan;
@@ -408,6 +411,7 @@ void mbox_free_channel(struct mbox_chan *chan) 
	if (!chan || !chan->cl)

		return;



	if (chan->mbox->ops->shutdown)

		chan->mbox->ops->shutdown(chan);



	/* The queued TX requests are simply aborted, no callbacks are made */