linux-kernel - Re: Machine crashes right *after* ~successful resume

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Message-ID: <CAE9FiQVMaGs=2OMbk6M7x=EhhfaVn5xT_70Sr+rU2Z1HEfjXbw@mail.gmail.com>
Date:	Mon, 27 Oct 2014 11:23:49 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Wilmer van der Gaast <wilmer@...st.net>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Pavel Machek <pavel@....cz>,
	Rafael Wysocki <rafael.j.wysocki@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Machine crashes right *after* ~successful resume

On Mon, Oct 27, 2014 at 3:50 AM, Wilmer van der Gaast <wilmer@...st.net> wrote:

> http://gaast.net/~wilmer/.lkml/bad3.17-pcidumps.txt

[  252.028142] PCI: 0000:04:00.0
0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
0010: ff ff ff ff ff ff ff ff

04:00.0 PCI bridge: Integrated Technology Express, Inc. Device 8892
(rev 10) (prog-if 01 [Subtractive decode])
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 4 bytes
Bus: primary=04, secondary=05, subordinate=05, sec-latency=32
I/O behind bridge: 0000d000-0000dfff
Memory behind bridge: fbc00000-fbcfffff
Secondary status: 66MHz+ FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR-
BridgeCtl: Parity- SERR- NoISA- VGA- MAbort- >Reset- FastB2B-
PriDiscTmr- SecDiscTmr+ DiscTmrStat- DiscTmrSERREn-
Capabilities: [90] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=55mA PME(D0+,D1+,D2+,D3hot+,D3cold+)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [a0] Subsystem: Gigabyte Technology Co., Ltd Device 5000

under

00:1c.3 PCI bridge: Intel Corporation 82801 PCI Bridge (rev b5)
(prog-if 01 [Subtractive decode])

So that ITE will not work after suspend/resume?

Please apply 4 attached patches and try to remove the device like

echo 1 > /sys/bus/pci/devices/0000\:04\:00.0/remove
echo 1 > /sys/bus/pci/devices/0000\:00\:1c.3/pcie_link_disable

before suspend/resume test.

Thanks

Yinghai

View attachment "move_pcie_link_disable_1.patch" of type "text/x-patch" (2628 bytes)

View attachment "move_pcie_link_disable_2.patch" of type "text/x-patch" (1947 bytes)

View attachment "pci_express_link.patch" of type "text/x-patch" (2574 bytes)

View attachment "pci_express_link_disable.patch" of type "text/x-patch" (1930 bytes)