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[0/3] Fixes for stop monitoring disabled devices series

Message ID 20200703104354.19657-1-andrzej.p@collabora.com (mailing list archive)
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Series Fixes for stop monitoring disabled devices series | expand

Message

Andrzej Pietrasiewicz July 3, 2020, 10:43 a.m. UTC
This short series contains fixes for "Stop monitoring disabled devices"
series https://www.spinics.net/lists/arm-kernel/msg817861.html

Invocation of thermal_zone_device_is_enabled() in acpi/thermal is now
redundant, because thermal_zone_device_update() now is capable of
handling disabled devices.

In imx's ->get_temp() the lock must not be taken, otherwise a deadlock
happens. The decision whether explicitly running a measurement cycle
is needed is taken based on driver's local irq_enabled variable.

Finally, thermal_zone_device_is_enabled() is made available to the
core only, as there are no driver users of it.

Andrzej Pietrasiewicz (3):
  acpi: thermal: Don't call thermal_zone_device_is_enabled()
  thermal: imx: Use driver's local data to decide whether to run a
    measurement
  thermal: Make thermal_zone_device_is_enabled() available to core only

 drivers/acpi/thermal.c         | 3 ---
 drivers/thermal/imx_thermal.c  | 7 ++++---
 drivers/thermal/thermal_core.c | 1 -
 drivers/thermal/thermal_core.h | 2 ++
 include/linux/thermal.h        | 5 -----
 5 files changed, 6 insertions(+), 12 deletions(-)

Comments

Daniel Lezcano July 3, 2020, 11:06 a.m. UTC | #1
On 03/07/2020 12:43, Andrzej Pietrasiewicz wrote:
> This short series contains fixes for "Stop monitoring disabled devices"
> series https://www.spinics.net/lists/arm-kernel/msg817861.html
> 
> Invocation of thermal_zone_device_is_enabled() in acpi/thermal is now
> redundant, because thermal_zone_device_update() now is capable of
> handling disabled devices.
> 
> In imx's ->get_temp() the lock must not be taken, otherwise a deadlock
> happens. The decision whether explicitly running a measurement cycle
> is needed is taken based on driver's local irq_enabled variable.
> 
> Finally, thermal_zone_device_is_enabled() is made available to the
> core only, as there are no driver users of it.
> 
> Andrzej Pietrasiewicz (3):
>   acpi: thermal: Don't call thermal_zone_device_is_enabled()
>   thermal: imx: Use driver's local data to decide whether to run a
>     measurement
>   thermal: Make thermal_zone_device_is_enabled() available to core only
> 
>  drivers/acpi/thermal.c         | 3 ---
>  drivers/thermal/imx_thermal.c  | 7 ++++---
>  drivers/thermal/thermal_core.c | 1 -
>  drivers/thermal/thermal_core.h | 2 ++
>  include/linux/thermal.h        | 5 -----
>  5 files changed, 6 insertions(+), 12 deletions(-)

Is this series easily merge-able with the other series?
Andrzej Pietrasiewicz July 3, 2020, 11:57 a.m. UTC | #2
Hi,

W dniu 03.07.2020 o 13:06, Daniel Lezcano pisze:
> On 03/07/2020 12:43, Andrzej Pietrasiewicz wrote:
>> This short series contains fixes for "Stop monitoring disabled devices"
>> series https://www.spinics.net/lists/arm-kernel/msg817861.html
>>
>> Invocation of thermal_zone_device_is_enabled() in acpi/thermal is now
>> redundant, because thermal_zone_device_update() now is capable of
>> handling disabled devices.
>>
>> In imx's ->get_temp() the lock must not be taken, otherwise a deadlock
>> happens. The decision whether explicitly running a measurement cycle
>> is needed is taken based on driver's local irq_enabled variable.
>>
>> Finally, thermal_zone_device_is_enabled() is made available to the
>> core only, as there are no driver users of it.
>>
>> Andrzej Pietrasiewicz (3):
>>    acpi: thermal: Don't call thermal_zone_device_is_enabled()
>>    thermal: imx: Use driver's local data to decide whether to run a
>>      measurement
>>    thermal: Make thermal_zone_device_is_enabled() available to core only
>>
>>   drivers/acpi/thermal.c         | 3 ---
>>   drivers/thermal/imx_thermal.c  | 7 ++++---
>>   drivers/thermal/thermal_core.c | 1 -
>>   drivers/thermal/thermal_core.h | 2 ++
>>   include/linux/thermal.h        | 5 -----
>>   5 files changed, 6 insertions(+), 12 deletions(-)
> 
> Is this series easily merge-able with the other series?
> 

So-so.

Some simple conflicts needed to be resolved.

I have created a branch for you to look at and decide
how far off it is from the original and whether the
original Acked-by/Reviewed-by can be retained.

Note that I might have lost some portions of code
during conflict resolution. It seems to me I haven't
but you know.

The branch:

https://gitlab.collabora.com/andrzej.p/kernel-tests/-/tree/thermal-dont-poll-disabled-for-daniel

The code compiles at each stage on x86_64 + COMPILE_TEST.

Andrzej
Daniel Lezcano July 3, 2020, 12:05 p.m. UTC | #3
On 03/07/2020 13:57, Andrzej Pietrasiewicz wrote:
> Hi,
> 
> W dniu 03.07.2020 o 13:06, Daniel Lezcano pisze:
>> On 03/07/2020 12:43, Andrzej Pietrasiewicz wrote:
>>> This short series contains fixes for "Stop monitoring disabled devices"
>>> series https://www.spinics.net/lists/arm-kernel/msg817861.html
>>>
>>> Invocation of thermal_zone_device_is_enabled() in acpi/thermal is now
>>> redundant, because thermal_zone_device_update() now is capable of
>>> handling disabled devices.
>>>
>>> In imx's ->get_temp() the lock must not be taken, otherwise a deadlock
>>> happens. The decision whether explicitly running a measurement cycle
>>> is needed is taken based on driver's local irq_enabled variable.
>>>
>>> Finally, thermal_zone_device_is_enabled() is made available to the
>>> core only, as there are no driver users of it.
>>>
>>> Andrzej Pietrasiewicz (3):
>>>    acpi: thermal: Don't call thermal_zone_device_is_enabled()
>>>    thermal: imx: Use driver's local data to decide whether to run a
>>>      measurement
>>>    thermal: Make thermal_zone_device_is_enabled() available to core only
>>>
>>>   drivers/acpi/thermal.c         | 3 ---
>>>   drivers/thermal/imx_thermal.c  | 7 ++++---
>>>   drivers/thermal/thermal_core.c | 1 -
>>>   drivers/thermal/thermal_core.h | 2 ++
>>>   include/linux/thermal.h        | 5 -----
>>>   5 files changed, 6 insertions(+), 12 deletions(-)
>>
>> Is this series easily merge-able with the other series?
>>
> 
> So-so.
> 
> Some simple conflicts needed to be resolved.
> 
> I have created a branch for you to look at and decide
> how far off it is from the original and whether the
> original Acked-by/Reviewed-by can be retained.
> 
> Note that I might have lost some portions of code
> during conflict resolution. It seems to me I haven't
> but you know.
> 
> The branch:
> 
> https://gitlab.collabora.com/andrzej.p/kernel-tests/-/tree/thermal-dont-poll-disabled-for-daniel

Ok, I propose to keep the these three patches on top of V7.

Rui are you fine with that ?
Zhang Rui July 5, 2020, 6:04 a.m. UTC | #4
On Fri, 2020-07-03 at 14:05 +0200, Daniel Lezcano wrote:
> On 03/07/2020 13:57, Andrzej Pietrasiewicz wrote:
> > Hi,
> > 
> > W dniu 03.07.2020 o 13:06, Daniel Lezcano pisze:
> > > On 03/07/2020 12:43, Andrzej Pietrasiewicz wrote:
> > > > This short series contains fixes for "Stop monitoring disabled
> > > > devices"
> > > > series https://www.spinics.net/lists/arm-kernel/msg817861.html
> > > > 
> > > > Invocation of thermal_zone_device_is_enabled() in acpi/thermal
> > > > is now
> > > > redundant, because thermal_zone_device_update() now is capable
> > > > of
> > > > handling disabled devices.
> > > > 
> > > > In imx's ->get_temp() the lock must not be taken, otherwise a
> > > > deadlock
> > > > happens. The decision whether explicitly running a measurement
> > > > cycle
> > > > is needed is taken based on driver's local irq_enabled
> > > > variable.
> > > > 
> > > > Finally, thermal_zone_device_is_enabled() is made available to
> > > > the
> > > > core only, as there are no driver users of it.
> > > > 
> > > > Andrzej Pietrasiewicz (3):
> > > >    acpi: thermal: Don't call thermal_zone_device_is_enabled()
> > > >    thermal: imx: Use driver's local data to decide whether to
> > > > run a
> > > >      measurement
> > > >    thermal: Make thermal_zone_device_is_enabled() available to
> > > > core only
> > > > 
> > > >   drivers/acpi/thermal.c         | 3 ---
> > > >   drivers/thermal/imx_thermal.c  | 7 ++++---
> > > >   drivers/thermal/thermal_core.c | 1 -
> > > >   drivers/thermal/thermal_core.h | 2 ++
> > > >   include/linux/thermal.h        | 5 -----
> > > >   5 files changed, 6 insertions(+), 12 deletions(-)
> > > 
> > > Is this series easily merge-able with the other series?
> > > 
> > 
> > So-so.
> > 
> > Some simple conflicts needed to be resolved.
> > 
> > I have created a branch for you to look at and decide
> > how far off it is from the original and whether the
> > original Acked-by/Reviewed-by can be retained.
> > 
> > Note that I might have lost some portions of code
> > during conflict resolution. It seems to me I haven't
> > but you know.
> > 
> > The branch:
> > 
> > 
https://gitlab.collabora.com/andrzej.p/kernel-tests/-/tree/thermal-dont-poll-disabled-for-daniel
> 
> Ok, I propose to keep the these three patches on top of V7.
> 
> Rui are you fine with that ?

Yes, that works for me.

thanks,
rui
> 
> 
>