linux-kernel - [PATCH v2 10/19] soundwire: intel: call helper to reset Slave states on resume

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Message-Id: <20191106192223.6003-11-pierre-louis.bossart@linux.intel.com>
Date:   Wed,  6 Nov 2019 13:22:14 -0600
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     alsa-devel@...a-project.org
Cc:     linux-kernel@...r.kernel.org, tiwai@...e.de, broonie@...nel.org,
        vkoul@...nel.org, gregkh@...uxfoundation.org, jank@...ence.com,
        srinivas.kandagatla@...aro.org, slawomir.blauciak@...el.com,
        Bard liao <yung-chuan.liao@...ux.intel.com>,
        Rander Wang <rander.wang@...ux.intel.com>,
        Ranjani Sridharan <ranjani.sridharan@...ux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>
Subject: [PATCH v2 10/19] soundwire: intel: call helper to reset Slave states on resume

This helps make sure they are all UNATTACHED.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
---
 drivers/soundwire/intel.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index c3cd7d2d5a34..36e09e273eda 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1435,6 +1435,9 @@ static int intel_resume_runtime(struct device *dev)
 		return ret;
 	}
 
+	/* make sure all Slaves are tagged as UNATTACHED */
+	sdw_clear_slave_status(&sdw->cdns.bus);
+
 	ret = sdw_cdns_enable_interrupt(cdns, true);
 	if (ret < 0) {
 		dev_err(dev, "cannot enable interrupts during resume\n");
-- 
2.20.1