[alsa-devel] [PATCH v3 15/22] soundwire: intel: disable pm_runtime when removing a master - Pierre-Louis Bossart

From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: alsa-devel@alsa-project.org
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	tiwai@suse.de, gregkh@linuxfoundation.org,
	linux-kernel@vger.kernel.org,
	Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
	vkoul@kernel.org, broonie@kernel.org,
	srinivas.kandagatla@linaro.org, jank@cadence.com,
	slawomir.blauciak@intel.com,
	Sanyog Kale <sanyog.r.kale@intel.com>,
	Bard liao <yung-chuan.liao@linux.intel.com>,
	Rander Wang <rander.wang@linux.intel.com>
Subject: [alsa-devel] [PATCH v3 15/22] soundwire: intel: disable pm_runtime when removing a master
Date: Thu, 14 Nov 2019 12:16:55 -0600	[thread overview]
Message-ID: <20191114181702.22254-16-pierre-louis.bossart@linux.intel.com> (raw)
In-Reply-To: <20191114181702.22254-1-pierre-louis.bossart@linux.intel.com>

Prevent race conditions between remove and resume by disabling
pm_runtime.

Note that this only takes care of pm_runtime at the Master level, the
same precautions are needed when removing a Slave device.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 drivers/soundwire/intel.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c
index 69b0c8f65ad8..460e2d8cf80d 100644
--- a/drivers/soundwire/intel.c
+++ b/drivers/soundwire/intel.c
@@ -1275,6 +1275,8 @@ static int intel_master_remove(struct sdw_master_device *md)
 {
 	struct sdw_intel *sdw;
 
+	pm_runtime_disable(&md->dev);
+
 	sdw = md->pdata;
 
 	if (!sdw->cdns.bus.prop.hw_disabled) {
-- 
2.20.1

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