netdev - Re: [Bugme-new] [Bug 14730] New: sky2 won't work after suspend/resume cycle

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Date:	Mon, 7 Dec 2009 12:23:35 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
Cc:	netdev@...r.kernel.org, linux-acpi@...r.kernel.org,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, mat@....com.pl,
	linux-pci@...r.kernel.org, "Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [Bugme-new] [Bug 14730] New: sky2 won't work after
 suspend/resume cycle

(cc linux-pci and Rafael)

On Mon, 7 Dec 2009 11:59:57 -0800
Stephen Hemminger <shemminger@...ux-foundation.org> wrote:

> On Mon, 7 Dec 2009 11:50:57 -0800
> Andrew Morton <akpm@...ux-foundation.org> wrote:
> 
> > 
> > (switched to email.  Please respond via emailed reply-to-all, not via the
> > bugzilla web interface).
> > 
> > On Fri, 4 Dec 2009 09:02:21 GMT
> > bugzilla-daemon@...zilla.kernel.org wrote:
> > 
> > > http://bugzilla.kernel.org/show_bug.cgi?id=14730
> > > 
> > >            Summary: sky2 won't work after suspend/resume cycle
> > >            Product: Power Management
> > >            Version: 2.5
> > >           Platform: All
> > >         OS/Version: Linux
> > >               Tree: Mainline
> > >             Status: NEW
> > >           Severity: high
> > >           Priority: P1
> > >          Component: Hibernation/Suspend
> > >         AssignedTo: power-management_other@...nel-bugs.osdl.org
> > >         ReportedBy: mat@....com.pl
> > >         Regression: Yes
> > > 
> > > 
> > > I use sky2 network adapter in my Fujitsu Siemens Esprimo Mobile U9200. It
> > > worked fine up until 2.6.31-rc3 (or at least that's the last one I tried it
> > > works for me) and in all versions after that I tried it stops working after
> > > suspend/resume cycle (I use powersave daemon, but I also tried without it -
> > > effect is the same). 
> > > 
> > > After resume what I see in dmesg is this:
> > > 
> > > sky2 driver version 1.23
> > > sky2 0000:04:00.0: enabling device (0000 -> 0003)
> > > sky2 0000:04:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
> > > sky2 0000:04:00.0: setting latency timer to 64
> > > sky2 0000:04:00.0: unsupported chip type 0xff
> > 
> > It looks like reads from the device are returning all-ones.  
> >
> 
> That means something in PM didn't turn on the bus, so driver is out of
> luck.  Most of these problems have been traced back to generic PCI
> power management, nothing in driver runs before this.

OK, thanks - I cast the Cc net a bit wider.  Hopefully a suitable fish
will swim into it.

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