Re: [PATCH v11 0/4] Allow USB devices to remain runtime-suspended when sleeping

[dbasehore .]

On Tue, Jan 5, 2016 at 4:48 AM, Rafael J. Wysocki  wrote:
> On Monday, January 04, 2016 06:27:18 PM Derek Basehore wrote:
>> On Mon, Nov 02, 2015 at 02:50:40AM +0100, Rafael J. Wysocki wrote:
>> >
>> > I've queued up this series for the second half of the v4.4 merge window.
>> >
>> > Thanks,
>> > Rafael
>> >
>> >
>> > ___
>> > linux-arm-kernel mailing list
>> > linux-arm-ker...@lists.infradead.org
>> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>>
>> What's the status of this patch series? I haven't seen the patches
>> posted for v4.4, plus there's the issue that Dan found that needs to be
>> addressed.
>>
>> Is there a new revision of the patch series being worked on?
>
> Tomeu is not working on one AFAICS, but I may just revive his series.
>
> Do you have a pointer to the Dan's report?
>
> Thanks,
> Rafael
>

It was a reply to the second patch in the series. Here's a link to it
https://lkml.org/lkml/2015/11/10/107
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Re: [PATCH v11 0/4] Allow USB devices to remain runtime-suspended when sleeping

[Rafael J. Wysocki]

On Monday, January 04, 2016 06:27:18 PM Derek Basehore wrote:
> On Mon, Nov 02, 2015 at 02:50:40AM +0100, Rafael J. Wysocki wrote:
> > 
> > I've queued up this series for the second half of the v4.4 merge window.
> > 
> > Thanks,
> > Rafael
> > 
> > 
> > ___
> > linux-arm-kernel mailing list
> > linux-arm-ker...@lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 
> What's the status of this patch series? I haven't seen the patches
> posted for v4.4, plus there's the issue that Dan found that needs to be
> addressed.
> 
> Is there a new revision of the patch series being worked on?

Tomeu is not working on one AFAICS, but I may just revive his series.

Do you have a pointer to the Dan's report?

Thanks,
Rafael

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Re: Re: [PATCH v11 0/4] Allow USB devices to remain runtime-suspended when sleeping

[Derek Basehore]

On Mon, Nov 02, 2015 at 02:50:40AM +0100, Rafael J. Wysocki wrote:
> 
> I've queued up this series for the second half of the v4.4 merge window.
> 
> Thanks,
> Rafael
> 
> 
> ___
> linux-arm-kernel mailing list
> linux-arm-ker...@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

What's the status of this patch series? I haven't seen the patches
posted for v4.4, plus there's the issue that Dan found that needs to be
addressed.

Is there a new revision of the patch series being worked on?
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Re: [PATCH v11 0/4] Allow USB devices to remain runtime-suspended when sleeping

[Rafael J. Wysocki]

On Tuesday, October 27, 2015 03:38:47 PM Tomeu Vizoso wrote:
> Hi,
> 
> this is v11 of an attempt to make it easier for devices to remain in
> runtime PM when the system goes to sleep, mainly to reduce the time
> spent resuming devices.
> 
> For this, we interpret the absence of all PM callback implementations as
> it being safe to do direct_complete, so their ancestors aren't prevented
> from remaining runtime-suspended.
> 
> Additionally, the prepare() callback of USB devices will return 1 if
> runtime PM is enabled and the current wakeup settings are correct.
> 
> With these changes, a uvcvideo device (for example) stays in runtime
> suspend when the system goes to sleep and is left in that state when the
> system resumes, not delaying it unnecessarily.
> 
> Thanks,
> 
> Tomeu
> 
> Changes in v11:
> - Move calls to dev_pm_domain_set() out from >power.lock as that
>   isn't needed for dev->pm_domain.
> 
> Changes in v10:
> - Remove superfluous call to pm_runtime_enabled() as suggested by Alan
> 
> Changes in v9:
> - Add docs noting the need for the device lock to be held before calling
>   device_is_bound()
> - Add docs noting the need for the device lock to be held before calling
>   dev_pm_domain_set()
> - Move to CONFIG_PM_SLEEP as suggested by Rafael and Ulf.
> - Rename from device_check_pm_callbacks to device_pm_check_callbacks to
>   follow with the naming convention of existing API.
> - Re-add calling to device_pm_check_callbacks from device registration
>   and when updating the PM domain of a device.
> 
> Changes in v8:
> - Add device_is_bound()
> - Add dev_pm_domain_set() and update code to use it
> - Move no_pm_callbacks field into CONFIG_PM_SLEEP
> - Call device_check_pm_callbacks only after a device is bound or unbound
> 
> Changes in v7:
> - Reduce indentation by adding a label in device_prepare()
> 
> Changes in v6:
> - Add stub for !CONFIG_PM.
> - Move implementation of device_check_pm_callbacks to power/main.c as it
>   doesn't belong to CONFIG_PM_SLEEP.
> - Take dev->power.lock before modifying flag.
> 
> Changes in v5:
> - Check for all dev_pm_ops instances associated to a device, updating a
>   no_pm_callbacks flag at the times when that could change.
> 
> Tomeu Vizoso (4):
>   device core: add device_is_bound()
>   PM / Domains: add setter for dev.pm_domain
>   PM / sleep: Go direct_complete if driver has no callbacks
>   USB / PM: Allow USB devices to remain runtime-suspended when sleeping
> 
>  arch/arm/mach-omap2/omap_device.c |  7 ---
>  drivers/acpi/acpi_lpss.c  |  5 +++--
>  drivers/acpi/device_pm.c  |  5 +++--
>  drivers/base/dd.c | 21 +++--
>  drivers/base/power/clock_ops.c|  5 +++--
>  drivers/base/power/common.c   | 24 
>  drivers/base/power/domain.c   |  8 ++--
>  drivers/base/power/main.c | 35 +++
>  drivers/base/power/power.h|  3 +++
>  drivers/gpu/vga/vga_switcheroo.c  | 10 +-
>  drivers/misc/mei/pci-me.c |  5 +++--
>  drivers/misc/mei/pci-txe.c|  5 +++--
>  drivers/usb/core/port.c   |  6 ++
>  drivers/usb/core/usb.c|  8 +++-
>  include/linux/device.h|  2 ++
>  include/linux/pm.h|  1 +
>  include/linux/pm_domain.h |  3 +++
>  17 files changed, 130 insertions(+), 23 deletions(-)

I've queued up this series for the second half of the v4.4 merge window.

Thanks,
Rafael

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[PATCH v11 0/4] Allow USB devices to remain runtime-suspended when sleeping

[Tomeu Vizoso]

Hi,

this is v11 of an attempt to make it easier for devices to remain in
runtime PM when the system goes to sleep, mainly to reduce the time
spent resuming devices.

For this, we interpret the absence of all PM callback implementations as
it being safe to do direct_complete, so their ancestors aren't prevented
from remaining runtime-suspended.

Additionally, the prepare() callback of USB devices will return 1 if
runtime PM is enabled and the current wakeup settings are correct.

With these changes, a uvcvideo device (for example) stays in runtime
suspend when the system goes to sleep and is left in that state when the
system resumes, not delaying it unnecessarily.

Thanks,

Tomeu

Changes in v11:
- Move calls to dev_pm_domain_set() out from >power.lock as that
  isn't needed for dev->pm_domain.

Changes in v10:
- Remove superfluous call to pm_runtime_enabled() as suggested by Alan

Changes in v9:
- Add docs noting the need for the device lock to be held before calling
  device_is_bound()
- Add docs noting the need for the device lock to be held before calling
  dev_pm_domain_set()
- Move to CONFIG_PM_SLEEP as suggested by Rafael and Ulf.
- Rename from device_check_pm_callbacks to device_pm_check_callbacks to
  follow with the naming convention of existing API.
- Re-add calling to device_pm_check_callbacks from device registration
  and when updating the PM domain of a device.

Changes in v8:
- Add device_is_bound()
- Add dev_pm_domain_set() and update code to use it
- Move no_pm_callbacks field into CONFIG_PM_SLEEP
- Call device_check_pm_callbacks only after a device is bound or unbound

Changes in v7:
- Reduce indentation by adding a label in device_prepare()

Changes in v6:
- Add stub for !CONFIG_PM.
- Move implementation of device_check_pm_callbacks to power/main.c as it
  doesn't belong to CONFIG_PM_SLEEP.
- Take dev->power.lock before modifying flag.

Changes in v5:
- Check for all dev_pm_ops instances associated to a device, updating a
  no_pm_callbacks flag at the times when that could change.

Tomeu Vizoso (4):
  device core: add device_is_bound()
  PM / Domains: add setter for dev.pm_domain
  PM / sleep: Go direct_complete if driver has no callbacks
  USB / PM: Allow USB devices to remain runtime-suspended when sleeping

 arch/arm/mach-omap2/omap_device.c |  7 ---
 drivers/acpi/acpi_lpss.c  |  5 +++--
 drivers/acpi/device_pm.c  |  5 +++--
 drivers/base/dd.c | 21 +++--
 drivers/base/power/clock_ops.c|  5 +++--
 drivers/base/power/common.c   | 24 
 drivers/base/power/domain.c   |  8 ++--
 drivers/base/power/main.c | 35 +++
 drivers/base/power/power.h|  3 +++
 drivers/gpu/vga/vga_switcheroo.c  | 10 +-
 drivers/misc/mei/pci-me.c |  5 +++--
 drivers/misc/mei/pci-txe.c|  5 +++--
 drivers/usb/core/port.c   |  6 ++
 drivers/usb/core/usb.c|  8 +++-
 include/linux/device.h|  2 ++
 include/linux/pm.h|  1 +
 include/linux/pm_domain.h |  3 +++
 17 files changed, 130 insertions(+), 23 deletions(-)

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