From: Bibby Hsieh <bibby.hsieh@xxxxxxxxxxxx> 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@xxxxxxxxxxxxxxx # v5.0+ Signed-off-by: Bibby Hsieh <bibby.hsieh@xxxxxxxxxxxx> Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx> Signed-off-by: Matthias Brugger <matthias.bgg@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- 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)) {