Messages in this thread | | | From | Duncan Sands <> | Subject | Re: [PATCH 1/3] UEAGLE : be suspend friendly | Date | Thu, 5 Oct 2006 09:17:35 +0200 |
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Hi Pavel,
> > Signed-off-by: matthieu castet <castet.matthieu@free.fr> > > Index: linux/drivers/usb/atm/ueagle-atm.c > > =================================================================== > > --- linux.orig/drivers/usb/atm/ueagle-atm.c 2006-09-22 21:39:56.000000000 +0200 > > +++ linux/drivers/usb/atm/ueagle-atm.c 2006-09-22 21:40:45.000000000 +0200 > > @@ -1177,6 +1177,9 @@ > > ret = uea_stat(sc); > > if (ret != -EAGAIN) > > msleep(1000); > > + if (try_to_freeze()) > > + uea_err(INS_TO_USBDEV(sc), "suspend/resume not supported, " > > + "please unplug/replug your modem\n"); > > Plug/unplug should be easy enough to simulate from usb driver, no?
if a USB driver doesn't define suspend/resume methods, then the core simply unplugs it on suspend, and replugs on resume (IIRC). Maybe Matthieu is trying for something better - hopefully he will explain. Since this is a modem, it would be nice if the internet connection sprang back to life on resume, which requires more work than unplug/plug. I've no idea what needs to be done to achieve this. These modems use the ATM networking layer by the way, I don't know if that makes things easier or harder.
Ciao,
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