From: Cristian Marussi <cristian.marussi@arm.com>
Date: Mon, 20 Apr 2020 15:23:14 +0000 (+0100)
Subject: firmware: arm_scmi: Clear channel for delayed responses
X-Git-Tag: v5.8-rc1~138^2~26^2~3
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d04fb2b2ddefad7c00edd29c1ed40188ce8f12a2;p=linux.git

firmware: arm_scmi: Clear channel for delayed responses

Clear channel properly when done processing a delayed response.
This will let the platform firmware know that the channel is now free to
use it for any new delayed response or notification.

Link: https://lore.kernel.org/r/20200420152315.21008-4-cristian.marussi@arm.com
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
(sudeep.holla: Updated commit log to reflect that channel is now free for
 platform to use)
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
---

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index 31c6a89a6edd..07de196f15aa 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -256,10 +256,12 @@ static void scmi_handle_response(struct scmi_chan_info *cinfo,
 			   xfer->hdr.protocol_id, xfer->hdr.seq,
 			   msg_type);
 
-	if (msg_type == MSG_TYPE_DELAYED_RESP)
+	if (msg_type == MSG_TYPE_DELAYED_RESP) {
+		info->desc->ops->clear_channel(cinfo);
 		complete(xfer->async_done);
-	else
+	} else {
 		complete(&xfer->done);
+	}
 }
 
 /**