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soc: mediatek: cmdq: return send msg error code 

[ Upstream commit 34c4e40726 ]

Return error code to client if send message fail,
so that client has chance to error handling.

Fixes: 576f1b4bc8 ("soc: mediatek: Add Mediatek CMDQ helper")
Signed-off-by: Dennis YC Hsieh <dennis-yc.hsieh@mediatek.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://lore.kernel.org/r/1583664775-19382-6-git-send-email-dennis-yc.hsieh@mediatek.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Dennis YC Hsieh 2020-03-08 18:52:47 +08:00 committed by Greg Kroah-Hartman
parent 56e7873ed2
commit 707f507502
1 changed files with 3 additions and 1 deletions
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4
drivers/soc/mediatek/mtk-cmdq-helper.c
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@ -258,7 +258,9 @@ int cmdq_pkt_flush_async(struct cmdq_pkt *pkt, cmdq_async_flush_cb cb,
spin_unlock_irqrestore(&client->lock, flags);
}
mbox_send_message(client->chan, pkt);
err = mbox_send_message(client->chan, pkt);
if (err < 0)
return err;
/* We can send next packet immediately, so just call txdone. */
mbox_client_txdone(client->chan, 0);