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From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: alsa-devel@alsa-project.org
Cc: linux-kernel@vger.kernel.org, tiwai@suse.de, broonie@kernel.org,
	vkoul@kernel.org, gregkh@linuxfoundation.org, jank@cadence.com,
	srinivas.kandagatla@linaro.org, slawomir.blauciak@intel.com,
	Bard liao <yung-chuan.liao@linux.intel.com>,
	Rander Wang <rander.wang@linux.intel.com>,
	Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	Sanyog Kale <sanyog.r.kale@intel.com>
Subject: [PATCH v2 14/19] soundwire: intel: disable pm_runtime when removing a master
Date: Wed,  6 Nov 2019 13:22:18 -0600	[thread overview]
Message-ID: <20191106192223.6003-15-pierre-louis.bossart@linux.intel.com> (raw)
In-Reply-To: <20191106192223.6003-1-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 36e09e273eda..f0f9a6252522 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


WARNING: multiple messages have this Message-ID (diff)
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 v2 14/19] soundwire: intel: disable pm_runtime when removing a master
Date: Wed,  6 Nov 2019 13:22:18 -0600	[thread overview]
Message-ID: <20191106192223.6003-15-pierre-louis.bossart@linux.intel.com> (raw)
In-Reply-To: <20191106192223.6003-1-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 36e09e273eda..f0f9a6252522 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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  parent reply	other threads:[~2019-11-06 19:23 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-06 19:22 [PATCH v2 00/19] soundwire: code hardening and suspend-resume support Pierre-Louis Bossart
2019-11-06 19:22 ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 01/19] soundwire: intel/cadence: fix timeouts in MSI mode Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 02/19] soundwire: fix race between driver probe and update_status callback Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 03/19] soundwire: bus: add PM/no-PM versions of read/write functions Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 04/19] soundwire: bus: write Slave Device Number without runtime_pm Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 05/19] soundwire: intel: add helpers for link power down and shim wake Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 06/19] soundwire: intel: Add basic power management support Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 07/19] soundwire: intel: add pm_runtime support Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 08/19] soundwire: intel: reset pm_runtime status during system resume Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 09/19] soundwire: bus: add helper to reset Slave status to UNATTACHED Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 10/19] soundwire: intel: call helper to reset Slave states on resume Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 11/19] soundwire: bus: check first if Slaves become UNATTACHED Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 12/19] soundwire: add enumeration_complete signaling Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 13/19] soundwire: bus: add initialization_complete signaling Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` Pierre-Louis Bossart [this message]
2019-11-06 19:22   ` [alsa-devel] [PATCH v2 14/19] soundwire: intel: disable pm_runtime when removing a master Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 15/19] soundwire: bus: disable pm_runtime in sdw_slave_delete Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 16/19] soundwire: stream: update state machine and add state checks Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 17/19] soundwire: stream: only prepare stream when it is configured Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 18/19] soundwire: stream: do not update parameters during DISABLED-PREPARED transition Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart
2019-11-06 19:22 ` [PATCH v2 19/19] soundwire: intel: reinitialize IP+DSP in .prepare() Pierre-Louis Bossart
2019-11-06 19:22   ` [alsa-devel] " Pierre-Louis Bossart

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