From: Mikko Perttunen <[email protected]> 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 <[email protected]> --- drivers/mailbox/mailbox.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mailbox/mailbox.c b/drivers/mailbox/mailbox.c index 0eaf21259874..f34820bcf33c 100644 --- a/drivers/mailbox/mailbox.c +++ b/drivers/mailbox/mailbox.c @@ -335,7 +335,8 @@ 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); -- 2.19.1
