upower fails to recognize hid devices with new kernels

[Peter Hurley]

In newer kernels, hiddev* devices now have class "usbmisc", rather than "usb" (for reference see http://www.spinics.net/lists/linux-usb/msg62276.html ).

Attached is a patch that fixes this without changing existing behavior for older kernels. The patch commit message contains an example attribute-walk on 3.7.0

SRU INFORMATION:
Patch: http://cgit.freedesktop.org/upower/commit/?id=9f31068707fc79744961cea7258b0eb262effbf1, in raring
Impact: We regularly backport newer kernels to LTS releases, and we do not want to cause regressions in power management, especially not if we switch some 12.04.x point release to a newer kernel by default.
Regression potential: None, it keeps recognizing the "usb" subsystem, and "usbmisc" does not yet exist in Precise final.
Test case: This needs a device like an USB controlled UPS or a wireless mouse/keyboard which reports its battery charge. These should work as before with the updated upower, and continue to report their charge in the power indicator with newer kernels.

[Ubuntu Foundations Team Bug Bot (crichton)]

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[Peter Hurley (phurley)]

This patch supersedes earlier patch.

[Peter Hurley (phurley)]

Upstreamed.

On Sat, 2012-12-29 at 13:11 +0000, Richard Hughes wrote:
On 26 December 2012 18:51, Peter Hurley <email address hidden> wrote:
> > In recent kernels, hiddev* devices now have class "usbmisc", rather
> > than "usb" (see http://www.spinics.net/lists/linux-usb/msg62276.html).
> > This change translates into a change in SUBSYSTEM matching for hiddev*
> > devices. This fix addresses this for recent kernels while retaining
> > existing behavior. For reference, here is an attribute-walk for a
> > CyberPower CPS 1500C on kernel 3.7.0:
>
> Applied to master, thanks!
>
> Richard.

[Sebastien Bacher (seb128)]

Thanks Peter, that fix [1] is in 0.9.19 which just got released and uploaded to the current Ubuntu serie

[1] http://cgit.freedesktop.org/upower/commit/?id=9f31068707fc79744961cea7258b0eb262effbf1

Closing the bug, not sure if we should backport to older series to support running newer kernels on those for hardware support

[Martin Pitt (pitti)]

I uploaded an SRU update for precise to the review queue.

[Steve Langasek (vorlon)]

The Precise Pangolin has reached end of life, so this bug will not be fixed for that release