Re: usb autosuspend is history after S2R (also on 2.6.31; UVC?)

From: Oliver Neukum
Date: Tue Sep 15 2009 - 15:47:16 EST


Am Dienstag, 15. September 2009 20:51:45 schrieb Andreas Mohr:

> So, does the uvc driver need a bit of handholding here?
> It likely shouldn't simply forget about its autosuspend status after
> resume...

Can you please provide what you get when you read the "level" file
of the device's power directory?

Secondly, please verify, that it works before the STR cycle and post
a syslog of a suspend/resume cycle with CONFIG_USB_DEBUG and
only this device attached if possible. Thirdly, please verify that only
uvc is affected.

> Or would Matthew's uvc autosuspend patch
> http://osdir.com/ml/fedora-extras-commits/2009-07/msg06079.html
> help here?

Please test it. It shouldn't work, but if it works there's a fundamental
flaw.

Regards
Oliver

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