From 8ed82e23875e6014d9aa8e03bf4301b27d614050 Mon Sep 17 00:00:00 2001 From: Mikko Perttunen Date: Wed, 28 Nov 2018 10:54:11 +0100 Subject: mailbox: Allow multiple controllers per device Look through the whole controller list when mapping device tree phandles to controllers instead of stopping at the first one. Each controller is intended to only contain one kind of mailbox, but some devices (like Tegra HSP) implement multiple kinds and use the same device tree node for all of them. As such, we need to allow multiple mbox_controllers per device tree node. Signed-off-by: Mikko Perttunen Signed-off-by: Jassi Brar --- drivers/mailbox/mailbox.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/mailbox') diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c index 6abb35ff49fa..c6a7d4582dc6 100644 --- a/drivers/mailbox/mailbox.c +++ b/drivers/mailbox/mailbox.c @@ -355,7 +355,8 @@ struct mbox_chan *mbox_request_channel(struct mbox_client *cl, int index) list_for_each_entry(mbox, &mbox_cons, node) if (mbox->dev->of_node == spec.np) { chan = mbox->of_xlate(mbox, &spec); - break; + if (!IS_ERR(chan)) + break; } of_node_put(spec.np); -- cgit v1.2.3