linux-kernel - Re: Help needed, Re: [Bug #14334] pcmcia suspend regression from 2.6.31.1 to 2.6.31.2

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Date:	Tue, 03 Nov 2009 09:22:03 +1100
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Jose Marino <braket@...mail.com>,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	Linux PCI <linux-pci@...r.kernel.org>,
	Dominik Brodowski <linux@...inikbrodowski.net>
Subject: Re: Help needed, Re: [Bug #14334] pcmcia suspend regression from
 2.6.31.1 to 2.6.31.2 - Dell Inspiron 600m

On Mon, 2009-11-02 at 14:39 +0100, Rafael J. Wysocki wrote:
> 
> > That socket _is_ going to be suspended, and testing for it here just seems 
> > to confuse things. 
> > 
> > So I'd remove it from both early_resume and late_resume, and only keep it 
> > in the case of the legacy user-requested suspend/resume (do we even do 
> > that any more?).
> 
> OK, updated patch is appended.

Test by me delayed to tomorrow ... hit another suspend/resume bug on
that laptop which took away the time I had to do that test yesterday and
today I'm off :-)

(Bug was simple but took a while to track down: machine was left in
storage for a while, battery ran out, RTC went back to Jan 1, 1904,
which means a negative xtime, and the new timekeeping code will do
horrible things including hanging at resume when that happens. Fix is to
make powerpc read_persistent_clock() to ignore the RTC when it contains
a date older than epoch).

Cheers,
Ben.

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