From: Boszormenyi Zoltan <zboszor@pr.hu>
To: Andreas Mohr <andi@lisas.de>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>
Subject: Re: ACPI regression? Was Re: Ethernet chip disappeared from lspci
Date: Sun, 21 Jun 2015 12:34:17 +0200 [thread overview]
Message-ID: <55869329.4040908@pr.hu> (raw)
In-Reply-To: <12950452.K8inU2UIYe@vostro.rjw.lan>
[-- Attachment #1: Type: text/plain, Size: 2095 bytes --]
Hi,
please, cc me, I am not subscribed to lkml.
> Hi,
>
> [lkml.org still broken --> no accurate mail header info possible...]
>
> Just to ask the obvious:
> I assume using /sys/bus/pci/rescan does not help once it's broken?
> (since the machine comes up empty at initial-boot scan, too)
I will try it, too, but I am not sure it would work.
Currently I can't test it because the last time I completely discharged
the battery. I also disconnected it to be able to get the realtek chip back
immediately for faster testing. Now, that I have reconnected the battery,
I need to wait for it to be charged somewhat to be able to reproduce
losing the network chip.
> Also, you could try diffing lspci -vvxxx -s.... output
> of working vs. "distorting" kernel version - perhaps some register setup
> has been changed (e.g. due to power management improvements or some such),
> which may encourage the card
> to get a problematic/corrupt state.
I attached a tarball that contains lspci -vvxxx for
- all devices / only the network chip
- before / after "modprobe r8169"
- for all 3 kernel versions tested.
I figured out that if I type the modprobe and lspci in the same command line,
I can get diagnostics out of the machine, after all.
It's not just the Realtek chip that has changed parameters.
(Vague idea) I noticed that some devices have changed like this:
- Memory behind bridge: 80000000-801fffff
- Prefetchable memory behind bridge: 0000000080200000-00000000803fffff
+ Memory behind bridge: ff000000-ff1fffff
+ Prefetchable memory behind bridge: 00000000ff200000-00000000ff3fffff
Can't this cause a problem? E.g. programming the bridge with an address range
that the bridge doesn't actually support?
>
> > Upon powering off the system,
> > the r8169 driver compained about "rtl_eriar_cond = 1 loop 100"
>
> Yup, that seems to be
> rtl_eri_read() in ethernet/realtek/r8169.c
> waiting on low condition of
> RTL_R32(ERIAR) & ERIAR_FLAG;
I found that, too, and I think it is a symptom of instead of the cause.
Thanks for your efforts,
Zoltán Böszörményi
[-- Attachment #2: lspci.tgz --]
[-- Type: application/x-compressed-tar, Size: 22851 bytes --]
next prev parent reply other threads:[~2015-06-21 10:34 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-19 13:24 Ethernet chip disappeared from lspci Boszormenyi Zoltan
2015-06-19 13:31 ` Boszormenyi Zoltan
2015-06-19 13:46 ` ACPI regression? Was " Boszormenyi Zoltan
2015-06-19 23:13 ` Rafael J. Wysocki
2015-06-19 23:13 ` Rafael J. Wysocki
2015-06-20 6:38 ` Boszormenyi Zoltan
2015-06-21 10:34 ` Boszormenyi Zoltan [this message]
2015-06-21 14:03 ` Bjorn Helgaas
2015-06-21 14:03 ` Bjorn Helgaas
2015-06-21 14:03 ` Bjorn Helgaas
2015-06-21 14:19 ` Boszormenyi Zoltan
2015-06-21 15:37 ` Boszormenyi Zoltan
2015-06-21 15:37 ` Boszormenyi Zoltan
2015-06-21 17:25 ` Jiang Liu
2015-06-21 17:25 ` Jiang Liu
2015-06-21 17:55 ` Jiang Liu
2015-06-21 17:55 ` Jiang Liu
2015-06-21 17:55 ` Jiang Liu
2015-06-21 18:55 ` Boszormenyi Zoltan
2015-06-21 19:59 ` Boszormenyi Zoltan
2015-06-21 19:59 ` Boszormenyi Zoltan
2015-06-23 4:12 ` [Patch v1] PCI, ACPI: Fix regressions caused by resource_size_t overflow with 32bit kernel Jiang Liu
2015-06-23 4:12 ` Jiang Liu
2015-06-23 7:35 ` Ingo Molnar
2015-06-23 7:35 ` Ingo Molnar
2015-06-21 18:28 ` ACPI regression? Was Re: Ethernet chip disappeared from lspci Boszormenyi Zoltan
-- strict thread matches above, loose matches on Subject: below --
2015-06-20 7:45 Andreas Mohr
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