linux-kernel - [PATCH 08/10] soundwire: stream: don't program mockup device ports

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Date:   Wed, 14 Jul 2021 11:22:07 +0800
From:   Bard Liao <yung-chuan.liao@...ux.intel.com>
To:     alsa-devel@...a-project.org, vkoul@...nel.org
Cc:     vinod.koul@...aro.org, linux-kernel@...r.kernel.org, tiwai@...e.de,
        broonie@...nel.org, gregkh@...uxfoundation.org,
        srinivas.kandagatla@...aro.org,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        bard.liao@...el.com
Subject: [PATCH 08/10] soundwire: stream: don't program mockup device ports

Mockup devices don't take part in command/control operations and their
virtual ports shall not be programmed.

Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
Reviewed-by: Rander Wang <rander.wang@...el.com>
---
 drivers/soundwire/stream.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c
index d84aaf115c13..5d4f6b308ef7 100644
--- a/drivers/soundwire/stream.c
+++ b/drivers/soundwire/stream.c
@@ -133,6 +133,9 @@ static int sdw_program_slave_port_params(struct sdw_bus *bus,
 	int ret;
 	u8 wbuf;
 
+	if (s_rt->slave->is_mockup_device)
+		return 0;
+
 	dpn_prop = sdw_get_slave_dpn_prop(s_rt->slave,
 					  s_rt->direction,
 					  t_params->port_num);
-- 
2.17.1