linux-kernel - iwlagn after suspend to ram and wakeup unusable, probe failed error -22

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Message-ID: <20110929165207.GD19653@gamma.logic.tuwien.ac.at>
Date:	Fri, 30 Sep 2011 01:52:07 +0900
From:	Norbert Preining <preining@...ic.at>
To:	linux-kernel@...r.kernel.org
Cc:	ipw3945-devel@...ts.sourceforge.net
Subject: iwlagn after suspend to ram and wakeup unusable, probe failed
	error -22

Hi everyone,

(please cc)

I am running one very recent kernel from git, currently 815d405cef,
and I am regularly having problem getting iwlagn to work after some
suspend/resume activity. It ends with no (NO!) way to get it working
but rebooting. Removing the iwlagn module does *not* help.

In the syslog I see:
[33824.855174] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:d
[33824.855178] Copyright(c) 2003-2011 Intel Corporation
[33824.868124] iwlagn 0000:06:00.0: Refused to change power state, currently in D3
[33824.868153] iwlagn 0000:06:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[33824.868601] iwlagn 0000:06:00.0: pci_resource_len = 0x00002000
[33824.868609] iwlagn 0000:06:00.0: pci_resource_base = ffffc900048fc000
[33824.868616] iwlagn 0000:06:00.0: HW Revision ID = 0x0
[33824.868631] iwlagn 0000:06:00.0: pci_enable_msi failed
[33824.868654] iwlagn 0000:06:00.0: PCI INT A disabled
[33824.868674] iwlagn: probe of 0000:06:00.0 failed with error -22


OTOH, a good log from booting is:
[   54.232710] Intel(R) Wireless WiFi Link AGN driver for Linux, in-tree:d
[   54.255001] Copyright(c) 2003-2011 Intel Corporation
[   54.264822] iwlagn 0000:06:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[   54.277528] iwlagn 0000:06:00.0: setting latency timer to 64
[   54.277588] iwlagn 0000:06:00.0: pci_resource_len = 0x00002000
[   54.280334] iwlagn 0000:06:00.0: pci_resource_base = ffffc9000007c000
[   54.292903] iwlagn 0000:06:00.0: HW Revision ID = 0x0
[   54.319506] iwlagn 0000:06:00.0: irq 46 for MSI/MSI-X
[   54.319805] iwlagn 0000:06:00.0: Detected Intel(R) WiFi Link 5100 AGN, REV=0x54
[   54.322467] iwlagn 0000:06:00.0: L1 Enabled; Disabling L0S

Thanks for any suggestion or help

Norbert

------------------------------------------------------------------------
Norbert Preining            preining@...ist.ac.jp, logic.at, debian.org}
JAIST, Japan                                 TeX Live & Debian Developer
DSA: 0x09C5B094   fp: 14DF 2E6C 0307 BE6D AD76  A9C0 D2BF 4AA3 09C5 B094
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