[PATCH v3 11/15] soc: qcom: aoss: Use mbox_ring_doorbell() instead of NULL message

[Douglas Anderson]

As per the patch ("mailbox: Deprecate NULL mbox messages; Introduce
mbox_ring_doorbell()"), we want to switch all users of NULL mailbox
messages to use mbox_ring_doorbell().

This client only ever sent NULL messages, so the transition is
straightforward. We can remove the call to mbox_client_txdone(). The
call didn't do anything for NULL messages and it's now officially
documented not to be called for doorbells.

Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
---
This driver is used on my sc7180-trogdor Chromebook. While I haven't
stress tested with it, I can confirm that the system boots normally to
UI and can suspend/resume with this patch in place.

(no changes since v1)

 drivers/soc/qcom/qcom_aoss.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c
index a543ab9bee6c..2ecab93239d2 100644
--- a/drivers/soc/qcom/qcom_aoss.c
+++ b/drivers/soc/qcom/qcom_aoss.c
@@ -97,8 +97,7 @@ struct qmp {
 
 static void qmp_kick(struct qmp *qmp)
 {
-	mbox_send_message(qmp->mbox_chan, NULL);
-	mbox_client_txdone(qmp->mbox_chan, 0);
+	mbox_ring_doorbell(qmp->mbox_chan);
 }
 
 static bool qmp_magic_valid(struct qmp *qmp)
-- 
2.53.0.273.g2a3d683680-goog