linux-kernel - [PATCH 5.4 26/36] soc: mediatek: knows_txdone needs to be set in Mediatek CMDQ helper

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Message-Id: <20200407101457.599722726@linuxfoundation.org>
Date:   Tue,  7 Apr 2020 12:21:59 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Bibby Hsieh <bibby.hsieh@...iatek.com>,
        CK Hu <ck.hu@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>
Subject: [PATCH 5.4 26/36] soc: mediatek: knows_txdone needs to be set in Mediatek CMDQ helper

From: Bibby Hsieh <bibby.hsieh@...iatek.com>

commit ce35e21d82bcac8b3fd5128888f9e233f8444293 upstream.

Mediatek CMDQ driver have a mechanism to do TXDONE_BY_ACK,
so we should set knows_txdone.

Fixes:576f1b4bc802 ("soc: mediatek: Add Mediatek CMDQ helper")

Cc: stable@...r.kernel.org # v5.0+
Signed-off-by: Bibby Hsieh <bibby.hsieh@...iatek.com>
Reviewed-by: CK Hu <ck.hu@...iatek.com>
Signed-off-by: Matthias Brugger <matthias.bgg@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/soc/mediatek/mtk-cmdq-helper.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/soc/mediatek/mtk-cmdq-helper.c
+++ b/drivers/soc/mediatek/mtk-cmdq-helper.c
@@ -38,6 +38,7 @@ struct cmdq_client *cmdq_mbox_create(str
 	client->pkt_cnt = 0;
 	client->client.dev = dev;
 	client->client.tx_block = false;
+	client->client.knows_txdone = true;
 	client->chan = mbox_request_channel(&client->client, index);
 
 	if (IS_ERR(client->chan)) {