linux-kernel - Re: [linux-pm] [Regression][git head f4b87dee9] ath9k doesn't work correctly after resume from suspend to RAM

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Date:	Sun, 23 May 2010 21:20:16 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	linux-pm@...ts.linux-foundation.org
Cc:	linux-wireless@...r.kernel.org,
	"Luis R. Rodriguez" <mcgrof@...il.com>,
	"John W. Linville" <linville@...driver.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>
Subject: Re: [linux-pm] [Regression][git head f4b87dee9] ath9k doesn't work correctly after resume from suspend to RAM

On Sunday 23 May 2010, Rafael J. Wysocki wrote:
> On Saturday 22 May 2010, Rafael J. Wysocki wrote:
> > Hi,
> > 
> > With current -git on Acer Ferrari One the ath9k driver doesn't seem to work
> > after resume from suspend to RAM.  NetworkManager seems to think that it works,
> > but it doesn't really connect with the AP and doesn't try to obtain an IP
> > address.
> 
> Sorry, this was incorrect.  It actually tries to obtain an IP address, but
> fails.  Apparently, it can't obtain the address without being reloaded.

iwlagn also has problems after resume from suspend to RAM (tested on
Toshiba Portege R500).  In this case resume works once, but then the next
attempt to suspend fails (I had to reboot the box every time that happened).

If iwlagn is unloaded, it is possible to suspend and resume the system
arbitrary number of times, but then iwlagn doesn't work when its reloaded
(it doesn't detect wireless networks).

Rafael
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