<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/drivers/base, branch v5.4.272</title>
<subtitle>Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git</subtitle>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/'/>
<entry>
<title>regmap: Add bulk read/write callbacks into regmap_config</title>
<updated>2024-03-15T14:48:20+00:00</updated>
<author>
<name>Marek Vasut</name>
<email>marex@denx.de</email>
</author>
<published>2022-04-30T02:51:44+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=b96b017919116c3ce95b5c2a55136ae034c7d37c'/>
<id>b96b017919116c3ce95b5c2a55136ae034c7d37c</id>
<content type='text'>
[ Upstream commit d77e745613680c54708470402e2b623dcd769681 ]

Currently the regmap_config structure only allows the user to implement
single element register read/write using .reg_read/.reg_write callbacks.
The regmap_bus already implements bulk counterparts of both, and is being
misused as a workaround for the missing bulk read/write callbacks in
regmap_config by a couple of drivers. To stop this misuse, add the bulk
read/write callbacks to regmap_config and call them from the regmap core
code.

Signed-off-by: Marek Vasut &lt;marex@denx.de&gt;
Cc: Jagan Teki &lt;jagan@amarulasolutions.com&gt;
Cc: Mark Brown &lt;broonie@kernel.org&gt;
Cc: Maxime Ripard &lt;maxime@cerno.tech&gt;
Cc: Robert Foss &lt;robert.foss@linaro.org&gt;
Cc: Sam Ravnborg &lt;sam@ravnborg.org&gt;
Cc: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
To: dri-devel@lists.freedesktop.org
Link: https://lore.kernel.org/r/20220430025145.640305-1-marex@denx.de
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Stable-dep-of: 3f42b142ea11 ("serial: max310x: fix IO data corruption in batched operations")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit d77e745613680c54708470402e2b623dcd769681 ]

Currently the regmap_config structure only allows the user to implement
single element register read/write using .reg_read/.reg_write callbacks.
The regmap_bus already implements bulk counterparts of both, and is being
misused as a workaround for the missing bulk read/write callbacks in
regmap_config by a couple of drivers. To stop this misuse, add the bulk
read/write callbacks to regmap_config and call them from the regmap core
code.

Signed-off-by: Marek Vasut &lt;marex@denx.de&gt;
Cc: Jagan Teki &lt;jagan@amarulasolutions.com&gt;
Cc: Mark Brown &lt;broonie@kernel.org&gt;
Cc: Maxime Ripard &lt;maxime@cerno.tech&gt;
Cc: Robert Foss &lt;robert.foss@linaro.org&gt;
Cc: Sam Ravnborg &lt;sam@ravnborg.org&gt;
Cc: Thomas Zimmermann &lt;tzimmermann@suse.de&gt;
To: dri-devel@lists.freedesktop.org
Link: https://lore.kernel.org/r/20220430025145.640305-1-marex@denx.de
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Stable-dep-of: 3f42b142ea11 ("serial: max310x: fix IO data corruption in batched operations")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>regmap: allow to define reg_update_bits for no bus configuration</title>
<updated>2024-03-15T14:48:19+00:00</updated>
<author>
<name>Ansuel Smith</name>
<email>ansuelsmth@gmail.com</email>
</author>
<published>2021-11-04T15:00:40+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=758c6799da46f8af3cf7547b062c56d87bea68b9'/>
<id>758c6799da46f8af3cf7547b062c56d87bea68b9</id>
<content type='text'>
[ Upstream commit 02d6fdecb9c38de19065f6bed8d5214556fd061d ]

Some device requires a special handling for reg_update_bits and can't use
the normal regmap read write logic. An example is when locking is
handled by the device and rmw operations requires to do atomic operations.
Allow to declare a dedicated function in regmap_config for
reg_update_bits in no bus configuration.

Signed-off-by: Ansuel Smith &lt;ansuelsmth@gmail.com&gt;
Link: https://lore.kernel.org/r/20211104150040.1260-1-ansuelsmth@gmail.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Stable-dep-of: 3f42b142ea11 ("serial: max310x: fix IO data corruption in batched operations")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 02d6fdecb9c38de19065f6bed8d5214556fd061d ]

Some device requires a special handling for reg_update_bits and can't use
the normal regmap read write logic. An example is when locking is
handled by the device and rmw operations requires to do atomic operations.
Allow to declare a dedicated function in regmap_config for
reg_update_bits in no bus configuration.

Signed-off-by: Ansuel Smith &lt;ansuelsmth@gmail.com&gt;
Link: https://lore.kernel.org/r/20211104150040.1260-1-ansuelsmth@gmail.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Stable-dep-of: 3f42b142ea11 ("serial: max310x: fix IO data corruption in batched operations")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>PM: runtime: Have devm_pm_runtime_enable() handle pm_runtime_dont_use_autosuspend()</title>
<updated>2024-02-23T07:25:14+00:00</updated>
<author>
<name>Douglas Anderson</name>
<email>dianders@chromium.org</email>
</author>
<published>2024-01-29T10:39:01+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=fef59ee6c057131d45e354ba2a210c77fe03ff96'/>
<id>fef59ee6c057131d45e354ba2a210c77fe03ff96</id>
<content type='text'>
[ Upstream commit b4060db9251f919506e4d672737c6b8ab9a84701 ]

The PM Runtime docs say:

  Drivers in -&gt;remove() callback should undo the runtime PM changes done
  in -&gt;probe(). Usually this means calling pm_runtime_disable(),
  pm_runtime_dont_use_autosuspend() etc.

&gt;From grepping code, it's clear that many people aren't aware of the
need to call pm_runtime_dont_use_autosuspend().

When brainstorming solutions, one idea that came up was to leverage
the new-ish devm_pm_runtime_enable() function. The idea here is that:

 * When the devm action is called we know that the driver is being
   removed. It's the perfect time to undo the use_autosuspend.

 * The code of pm_runtime_dont_use_autosuspend() already handles the
   case of being called when autosuspend wasn't enabled.

Suggested-by: Laurent Pinchart &lt;laurent.pinchart@ideasonboard.com&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Reviewed-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Stable-dep-of: 3d07a411b4fa ("drm/msm/dsi: Use pm_runtime_resume_and_get to prevent refcnt leaks")
Signed-off-by: Amit Pundir &lt;amit.pundir@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit b4060db9251f919506e4d672737c6b8ab9a84701 ]

The PM Runtime docs say:

  Drivers in -&gt;remove() callback should undo the runtime PM changes done
  in -&gt;probe(). Usually this means calling pm_runtime_disable(),
  pm_runtime_dont_use_autosuspend() etc.

&gt;From grepping code, it's clear that many people aren't aware of the
need to call pm_runtime_dont_use_autosuspend().

When brainstorming solutions, one idea that came up was to leverage
the new-ish devm_pm_runtime_enable() function. The idea here is that:

 * When the devm action is called we know that the driver is being
   removed. It's the perfect time to undo the use_autosuspend.

 * The code of pm_runtime_dont_use_autosuspend() already handles the
   case of being called when autosuspend wasn't enabled.

Suggested-by: Laurent Pinchart &lt;laurent.pinchart@ideasonboard.com&gt;
Signed-off-by: Douglas Anderson &lt;dianders@chromium.org&gt;
Reviewed-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
Stable-dep-of: 3d07a411b4fa ("drm/msm/dsi: Use pm_runtime_resume_and_get to prevent refcnt leaks")
Signed-off-by: Amit Pundir &lt;amit.pundir@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>PM: runtime: add devm_pm_runtime_enable helper</title>
<updated>2024-02-23T07:25:14+00:00</updated>
<author>
<name>Dmitry Baryshkov</name>
<email>dmitry.baryshkov@linaro.org</email>
</author>
<published>2024-01-29T10:39:00+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=835ed5effb601b6b67d66fe33289a54904427f8c'/>
<id>835ed5effb601b6b67d66fe33289a54904427f8c</id>
<content type='text'>
[ Upstream commit b3636a3a2c51715736d3ec45f635ed03191962ce ]

A typical code pattern for pm_runtime_enable() call is to call it in the
_probe function and to call pm_runtime_disable() both from _probe error
path and from _remove function. For some drivers the whole remove
function would consist of the call to pm_remove_disable().

Add helper function to replace this bolierplate piece of code. Calling
devm_pm_runtime_enable() removes the need for calling
pm_runtime_disable() both in the probe()'s error path and in the
remove() function.

Signed-off-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Link: https://lore.kernel.org/r/20210731195034.979084-2-dmitry.baryshkov@linaro.org
Acked-by: Rafael J. Wysocki &lt;rafael@kernel.org&gt;
Signed-off-by: Stephen Boyd &lt;sboyd@kernel.org&gt;
Stable-dep-of: 3d07a411b4fa ("drm/msm/dsi: Use pm_runtime_resume_and_get to prevent refcnt leaks")
Signed-off-by: Amit Pundir &lt;amit.pundir@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit b3636a3a2c51715736d3ec45f635ed03191962ce ]

A typical code pattern for pm_runtime_enable() call is to call it in the
_probe function and to call pm_runtime_disable() both from _probe error
path and from _remove function. For some drivers the whole remove
function would consist of the call to pm_remove_disable().

Add helper function to replace this bolierplate piece of code. Calling
devm_pm_runtime_enable() removes the need for calling
pm_runtime_disable() both in the probe()'s error path and in the
remove() function.

Signed-off-by: Dmitry Baryshkov &lt;dmitry.baryshkov@linaro.org&gt;
Link: https://lore.kernel.org/r/20210731195034.979084-2-dmitry.baryshkov@linaro.org
Acked-by: Rafael J. Wysocki &lt;rafael@kernel.org&gt;
Signed-off-by: Stephen Boyd &lt;sboyd@kernel.org&gt;
Stable-dep-of: 3d07a411b4fa ("drm/msm/dsi: Use pm_runtime_resume_and_get to prevent refcnt leaks")
Signed-off-by: Amit Pundir &lt;amit.pundir@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>pmdomain: core: Move the unused cleanup to a _sync initcall</title>
<updated>2024-02-23T07:25:13+00:00</updated>
<author>
<name>Konrad Dybcio</name>
<email>konrad.dybcio@linaro.org</email>
</author>
<published>2023-12-27T15:21:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=fbe86124b7d6d3623e51181a31848a3d0f7dcd52'/>
<id>fbe86124b7d6d3623e51181a31848a3d0f7dcd52</id>
<content type='text'>
commit 741ba0134fa7822fcf4e4a0a537a5c4cfd706b20 upstream.

The unused clock cleanup uses the _sync initcall to give all users at
earlier initcalls time to probe. Do the same to avoid leaving some PDs
dangling at "on" (which actually happened on qcom!).

Fixes: 2fe71dcdfd10 ("PM / domains: Add late_initcall to disable unused PM domains")
Signed-off-by: Konrad Dybcio &lt;konrad.dybcio@linaro.org&gt;
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231227-topic-pmdomain_sync_cleanup-v1-1-5f36769d538b@linaro.org
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 741ba0134fa7822fcf4e4a0a537a5c4cfd706b20 upstream.

The unused clock cleanup uses the _sync initcall to give all users at
earlier initcalls time to probe. Do the same to avoid leaving some PDs
dangling at "on" (which actually happened on qcom!).

Fixes: 2fe71dcdfd10 ("PM / domains: Add late_initcall to disable unused PM domains")
Signed-off-by: Konrad Dybcio &lt;konrad.dybcio@linaro.org&gt;
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20231227-topic-pmdomain_sync_cleanup-v1-1-5f36769d538b@linaro.org
Signed-off-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>software node: Let args be NULL in software_node_get_reference_args</title>
<updated>2024-01-25T22:34:31+00:00</updated>
<author>
<name>Sakari Ailus</name>
<email>sakari.ailus@linux.intel.com</email>
</author>
<published>2023-11-09T10:10:09+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=ed903eeb4e2e914130b3ca5f6313f81c50dc672b'/>
<id>ed903eeb4e2e914130b3ca5f6313f81c50dc672b</id>
<content type='text'>
[ Upstream commit 1eaea4b3604eb9ca7d9a1e73d88fc121bb4061f5 ]

fwnode_get_property_reference_args() may not be called with args argument
NULL and while OF already supports this. Add the missing NULL check.

The purpose is to be able to count the references.

Fixes: b06184acf751 ("software node: Add software_node_get_reference_args()")
Signed-off-by: Sakari Ailus &lt;sakari.ailus@linux.intel.com&gt;
Reviewed-by: Andy Shevchenko &lt;andriy.shevchenko@linux.intel.com&gt;
Reviewed-by: Heikki Krogerus &lt;heikki.krogerus@linux.intel.com&gt;
Link: https://lore.kernel.org/r/20231109101010.1329587-3-sakari.ailus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 1eaea4b3604eb9ca7d9a1e73d88fc121bb4061f5 ]

fwnode_get_property_reference_args() may not be called with args argument
NULL and while OF already supports this. Add the missing NULL check.

The purpose is to be able to count the references.

Fixes: b06184acf751 ("software node: Add software_node_get_reference_args()")
Signed-off-by: Sakari Ailus &lt;sakari.ailus@linux.intel.com&gt;
Reviewed-by: Andy Shevchenko &lt;andriy.shevchenko@linux.intel.com&gt;
Reviewed-by: Heikki Krogerus &lt;heikki.krogerus@linux.intel.com&gt;
Link: https://lore.kernel.org/r/20231109101010.1329587-3-sakari.ailus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>devcoredump: Send uevent once devcd is ready</title>
<updated>2023-12-13T17:18:18+00:00</updated>
<author>
<name>Mukesh Ojha</name>
<email>quic_mojha@quicinc.com</email>
</author>
<published>2023-11-17T14:49:32+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=06bcac5c51519566d45f9e21b85d56457e12fcc2'/>
<id>06bcac5c51519566d45f9e21b85d56457e12fcc2</id>
<content type='text'>
[ Upstream commit af54d778a03853801d681c98c0c2a6c316ef9ca7 ]

dev_coredumpm() creates a devcoredump device and adds it
to the core kernel framework which eventually end up
sending uevent to the user space and later creates a
symbolic link to the failed device. An application
running in userspace may be interested in this symbolic
link to get the name of the failed device.

In a issue scenario, once uevent sent to the user space
it start reading '/sys/class/devcoredump/devcdX/failing_device'
to get the actual name of the device which might not been
created and it is in its path of creation.

To fix this, suppress sending uevent till the failing device
symbolic link gets created and send uevent once symbolic
link is created successfully.

Fixes: 833c95456a70 ("device coredump: add new device coredump class")
Signed-off-by: Mukesh Ojha &lt;quic_mojha@quicinc.com&gt;
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1700232572-25823-1-git-send-email-quic_mojha@quicinc.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit af54d778a03853801d681c98c0c2a6c316ef9ca7 ]

dev_coredumpm() creates a devcoredump device and adds it
to the core kernel framework which eventually end up
sending uevent to the user space and later creates a
symbolic link to the failed device. An application
running in userspace may be interested in this symbolic
link to get the name of the failed device.

In a issue scenario, once uevent sent to the user space
it start reading '/sys/class/devcoredump/devcdX/failing_device'
to get the actual name of the device which might not been
created and it is in its path of creation.

To fix this, suppress sending uevent till the failing device
symbolic link gets created and send uevent once symbolic
link is created successfully.

Fixes: 833c95456a70 ("device coredump: add new device coredump class")
Signed-off-by: Mukesh Ojha &lt;quic_mojha@quicinc.com&gt;
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/1700232572-25823-1-git-send-email-quic_mojha@quicinc.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>devcoredump : Serialize devcd_del work</title>
<updated>2023-12-13T17:18:18+00:00</updated>
<author>
<name>Mukesh Ojha</name>
<email>quic_mojha@quicinc.com</email>
</author>
<published>2022-09-13T12:50:24+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=c6a1282e530d6e34da292857ec4c230c3a289199'/>
<id>c6a1282e530d6e34da292857ec4c230c3a289199</id>
<content type='text'>
[ Upstream commit 01daccf748323dfc61112f474cf2ba81015446b0 ]

In following scenario(diagram), when one thread X running dev_coredumpm()
adds devcd device to the framework which sends uevent notification to
userspace and another thread Y reads this uevent and call to
devcd_data_write() which eventually try to delete the queued timer that
is not initialized/queued yet.

So, debug object reports some warning and in the meantime, timer is
initialized and queued from X path. and from Y path, it gets reinitialized
again and timer-&gt;entry.pprev=NULL and try_to_grab_pending() stucks.

To fix this, introduce mutex and a boolean flag to serialize the behaviour.

 	cpu0(X)			                cpu1(Y)

    dev_coredump() uevent sent to user space
    device_add()  ======================&gt; user space process Y reads the
                                          uevents writes to devcd fd
                                          which results into writes to

                                         devcd_data_write()
                                           mod_delayed_work()
                                             try_to_grab_pending()
                                               del_timer()
                                                 debug_assert_init()
   INIT_DELAYED_WORK()
   schedule_delayed_work()
                                                   debug_object_fixup()
                                                     timer_fixup_assert_init()
                                                       timer_setup()
                                                         do_init_timer()
                                                       /*
                                                        Above call reinitializes
                                                        the timer to
                                                        timer-&gt;entry.pprev=NULL
                                                        and this will be checked
                                                        later in timer_pending() call.
                                                       */
                                                 timer_pending()
                                                  !hlist_unhashed_lockless(&amp;timer-&gt;entry)
                                                    !h-&gt;pprev
                                                /*
                                                  del_timer() checks h-&gt;pprev and finds
                                                  it to be NULL due to which
                                                  try_to_grab_pending() stucks.
                                                */

Link: https://lore.kernel.org/lkml/2e1f81e2-428c-f11f-ce92-eb11048cb271@quicinc.com/
Signed-off-by: Mukesh Ojha &lt;quic_mojha@quicinc.com&gt;
Link: https://lore.kernel.org/r/1663073424-13663-1-git-send-email-quic_mojha@quicinc.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Stable-dep-of: af54d778a038 ("devcoredump: Send uevent once devcd is ready")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 01daccf748323dfc61112f474cf2ba81015446b0 ]

In following scenario(diagram), when one thread X running dev_coredumpm()
adds devcd device to the framework which sends uevent notification to
userspace and another thread Y reads this uevent and call to
devcd_data_write() which eventually try to delete the queued timer that
is not initialized/queued yet.

So, debug object reports some warning and in the meantime, timer is
initialized and queued from X path. and from Y path, it gets reinitialized
again and timer-&gt;entry.pprev=NULL and try_to_grab_pending() stucks.

To fix this, introduce mutex and a boolean flag to serialize the behaviour.

 	cpu0(X)			                cpu1(Y)

    dev_coredump() uevent sent to user space
    device_add()  ======================&gt; user space process Y reads the
                                          uevents writes to devcd fd
                                          which results into writes to

                                         devcd_data_write()
                                           mod_delayed_work()
                                             try_to_grab_pending()
                                               del_timer()
                                                 debug_assert_init()
   INIT_DELAYED_WORK()
   schedule_delayed_work()
                                                   debug_object_fixup()
                                                     timer_fixup_assert_init()
                                                       timer_setup()
                                                         do_init_timer()
                                                       /*
                                                        Above call reinitializes
                                                        the timer to
                                                        timer-&gt;entry.pprev=NULL
                                                        and this will be checked
                                                        later in timer_pending() call.
                                                       */
                                                 timer_pending()
                                                  !hlist_unhashed_lockless(&amp;timer-&gt;entry)
                                                    !h-&gt;pprev
                                                /*
                                                  del_timer() checks h-&gt;pprev and finds
                                                  it to be NULL due to which
                                                  try_to_grab_pending() stucks.
                                                */

Link: https://lore.kernel.org/lkml/2e1f81e2-428c-f11f-ce92-eb11048cb271@quicinc.com/
Signed-off-by: Mukesh Ojha &lt;quic_mojha@quicinc.com&gt;
Link: https://lore.kernel.org/r/1663073424-13663-1-git-send-email-quic_mojha@quicinc.com
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
Stable-dep-of: af54d778a038 ("devcoredump: Send uevent once devcd is ready")
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>driver core: Release all resources during unbind before updating device links</title>
<updated>2023-12-08T07:44:22+00:00</updated>
<author>
<name>Saravana Kannan</name>
<email>saravanak@google.com</email>
</author>
<published>2023-10-18T01:38:50+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=d359886a7a80989c81c8ad056dc66d8741709365'/>
<id>d359886a7a80989c81c8ad056dc66d8741709365</id>
<content type='text'>
commit 2e84dc37920012b458e9458b19fc4ed33f81bc74 upstream.

This commit fixes a bug in commit 9ed9895370ae ("driver core: Functional
dependencies tracking support") where the device link status was
incorrectly updated in the driver unbind path before all the device's
resources were released.

Fixes: 9ed9895370ae ("driver core: Functional dependencies tracking support")
Cc: stable &lt;stable@kernel.org&gt;
Reported-by: Uwe Kleine-König &lt;u.kleine-koenig@pengutronix.de&gt;
Closes: https://lore.kernel.org/all/20231014161721.f4iqyroddkcyoefo@pengutronix.de/
Signed-off-by: Saravana Kannan &lt;saravanak@google.com&gt;
Cc: Thierry Reding &lt;thierry.reding@gmail.com&gt;
Cc: Yang Yingliang &lt;yangyingliang@huawei.com&gt;
Cc: Andy Shevchenko &lt;andriy.shevchenko@linux.intel.com&gt;
Cc: Mark Brown &lt;broonie@kernel.org&gt;
Cc: Matti Vaittinen &lt;mazziesaccount@gmail.com&gt;
Cc: James Clark &lt;james.clark@arm.com&gt;
Acked-by: "Rafael J. Wysocki" &lt;rafael@kernel.org&gt;
Tested-by: Uwe Kleine-König &lt;u.kleine-koenig@pengutronix.de&gt;
Acked-by: Uwe Kleine-König &lt;u.kleine-koenig@pengutronix.de&gt;
Link: https://lore.kernel.org/r/20231018013851.3303928-1-saravanak@google.com
Signed-off-by: Uwe Kleine-König &lt;u.kleine-koenig@pengutronix.de&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
commit 2e84dc37920012b458e9458b19fc4ed33f81bc74 upstream.

This commit fixes a bug in commit 9ed9895370ae ("driver core: Functional
dependencies tracking support") where the device link status was
incorrectly updated in the driver unbind path before all the device's
resources were released.

Fixes: 9ed9895370ae ("driver core: Functional dependencies tracking support")
Cc: stable &lt;stable@kernel.org&gt;
Reported-by: Uwe Kleine-König &lt;u.kleine-koenig@pengutronix.de&gt;
Closes: https://lore.kernel.org/all/20231014161721.f4iqyroddkcyoefo@pengutronix.de/
Signed-off-by: Saravana Kannan &lt;saravanak@google.com&gt;
Cc: Thierry Reding &lt;thierry.reding@gmail.com&gt;
Cc: Yang Yingliang &lt;yangyingliang@huawei.com&gt;
Cc: Andy Shevchenko &lt;andriy.shevchenko@linux.intel.com&gt;
Cc: Mark Brown &lt;broonie@kernel.org&gt;
Cc: Matti Vaittinen &lt;mazziesaccount@gmail.com&gt;
Cc: James Clark &lt;james.clark@arm.com&gt;
Acked-by: "Rafael J. Wysocki" &lt;rafael@kernel.org&gt;
Tested-by: Uwe Kleine-König &lt;u.kleine-koenig@pengutronix.de&gt;
Acked-by: Uwe Kleine-König &lt;u.kleine-koenig@pengutronix.de&gt;
Link: https://lore.kernel.org/r/20231018013851.3303928-1-saravanak@google.com
Signed-off-by: Uwe Kleine-König &lt;u.kleine-koenig@pengutronix.de&gt;
Signed-off-by: Greg Kroah-Hartman &lt;gregkh@linuxfoundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>regmap: prevent noinc writes from clobbering cache</title>
<updated>2023-11-20T09:30:15+00:00</updated>
<author>
<name>Ben Wolsieffer</name>
<email>ben.wolsieffer@hefring.com</email>
</author>
<published>2023-11-01T14:29:27+00:00</published>
<link rel='alternate' type='text/html' href='https://git.exis.tech/linux.git/commit/?id=c4d5179e42b456abb3a0469d3d7a7db5b6294037'/>
<id>c4d5179e42b456abb3a0469d3d7a7db5b6294037</id>
<content type='text'>
[ Upstream commit 984a4afdc87a1fc226fd657b1cd8255c13d3fc1a ]

Currently, noinc writes are cached as if they were standard incrementing
writes, overwriting unrelated register values in the cache. Instead, we
want to cache the last value written to the register, as is done in the
accelerated noinc handler (regmap_noinc_readwrite).

Fixes: cdf6b11daa77 ("regmap: Add regmap_noinc_write API")
Signed-off-by: Ben Wolsieffer &lt;ben.wolsieffer@hefring.com&gt;
Link: https://lore.kernel.org/r/20231101142926.2722603-2-ben.wolsieffer@hefring.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
[ Upstream commit 984a4afdc87a1fc226fd657b1cd8255c13d3fc1a ]

Currently, noinc writes are cached as if they were standard incrementing
writes, overwriting unrelated register values in the cache. Instead, we
want to cache the last value written to the register, as is done in the
accelerated noinc handler (regmap_noinc_readwrite).

Fixes: cdf6b11daa77 ("regmap: Add regmap_noinc_write API")
Signed-off-by: Ben Wolsieffer &lt;ben.wolsieffer@hefring.com&gt;
Link: https://lore.kernel.org/r/20231101142926.2722603-2-ben.wolsieffer@hefring.com
Signed-off-by: Mark Brown &lt;broonie@kernel.org&gt;
Signed-off-by: Sasha Levin &lt;sashal@kernel.org&gt;
</pre>
</div>
</content>
</entry>
</feed>
