linux-kernel - [RFC PATCH 34/40] soundwire: intel: ignore disabled links for suspend/resume

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Message-Id: <20190725234032.21152-35-pierre-louis.bossart@linux.intel.com>
Date:   Thu, 25 Jul 2019 18:40:26 -0500
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,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>
Subject: [RFC PATCH 34/40] soundwire: intel: ignore disabled links for suspend/resume

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
---
 drivers/soundwire/intel.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 1477c35f616f..a976480d6f36 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1161,6 +1161,12 @@ static int intel_suspend(struct device *dev)
 
 	sdw = dev_get_drvdata(dev);
 
+	if (sdw->cdns.bus.prop.hw_disabled) {
+		dev_dbg(dev, "SoundWire master %d is disabled, ignoring\n",
+			sdw->cdns.bus.link_id);
+		return 0;
+	}
+
 	ret = intel_link_power_down(sdw);
 	if (ret) {
 		dev_err(dev, "Link power down failed: %d", ret);
@@ -1179,6 +1185,12 @@ static int intel_resume(struct device *dev)
 
 	sdw = dev_get_drvdata(dev);
 
+	if (sdw->cdns.bus.prop.hw_disabled) {
+		dev_dbg(dev, "SoundWire master %d is disabled, ignoring\n",
+			sdw->cdns.bus.link_id);
+		return 0;
+	}
+
 	ret = intel_init(sdw);
 	if (ret) {
 		dev_err(dev, "%s failed: %d", __func__, ret);
-- 
2.20.1