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Commit b7133d6f authored by Bjorn Andersson's avatar Bjorn Andersson Committed by Jassi Brar
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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
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+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 */