[PATCH 1/2] libertas: add ability to power off card on suspend

Vasily Khoruzhick anarsoul at gmail.com
Tue Aug 2 17:12:19 EDT 2011

On Tuesday 02 August 2011 23:32:27 Daniel Drake wrote:
> On 2 August 2011 21:09, Vasily Khoruzhick <anarsoul at gmail.com> wrote:
> > Because no one puts interface down before suspend?
> > I just re-tested - if interface is up - kernel does not put it down
> > before suspend, so I got a lot of timeouts and errors on dmesg after
> > resume.
> I can't see how this would have been influenced by my work.

Now generic libertas driver controls power, not if_spi. So it should be able 
to turn off card before going suspend. Messing with power in if_* and generic 
part does not look like a good idea to me.

> Your resume handler should already be fixing up the hardware state so
> that it can be operated (regardless of any power saving that might
> come into effect), or otherwise your suspend handler should cause the
> device to be removed so that it can be reprobed completely during
> resume.

My resume handler calls lbs_suspend to detach device, and it expects that 
lbs_suspend will disable card power.
> Daniel


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