netdev - [3.1-rc8 REGRESSION] sky2 hangs machine on turning off or suspending

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Date:	Wed, 9 Nov 2011 12:46:07 +0100
From:	Rafał Miłecki <zajec5@...il.com>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>,
	Stephen Hemminger <shemminger@...tta.com>,
	Network Development <netdev@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: [3.1-rc8 REGRESSION] sky2 hangs machine on turning off or suspending

I've Sony VAIO FW11S with:

08:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd.
88E8055 PCI-E Gigabit Ethernet Controller [11ab:4363] (rev 13)
        Subsystem: Sony Corporation Device [104d:9035]
        Flags: bus master, fast devsel, latency 0, IRQ 47
        Memory at d0120000 (64-bit, non-prefetchable) [size=16K]
        I/O ports at 2000 [size=256]
        Expansion ROM at d0100000 [disabled] [size=128K]
        Capabilities: [48] Power Management version 3
        Capabilities: [50] Vital Product Data
        Capabilities: [5c] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [e0] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Kernel driver in use: sky2

Starting with:

0bdb0bd0139f3b6afa252de1487e3ce82a494db9
Author: stephen hemminger <shemminger@...tta.com>
Date:   Fri Sep 23 11:13:40 2011 +0000

    sky2: manage irq better on single port card

I can not turn off my machine. I see "The system will be halted
immediately" on ALT+CTRL+F10 and that's all. Machine doesn't turn off,
I can no use SysRq, fan goes up. On CTRL+ATL+F1 I can see info about
sending KILL signal to all processes.

Reverting this single patch fixes the problem.

Some dmesg sky2 output:
[   10.001833] sky2: driver version 1.29
[   10.001873] sky2 0000:08:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[   10.001886] sky2 0000:08:00.0: setting latency timer to 64
[   10.001916] sky2 0000:08:00.0: Yukon-2 EC Ultra chip revision 3
[   10.002022] sky2 0000:08:00.0: irq 47 for MSI/MSI-X
[   10.002515] sky2 0000:08:00.0: eth0: addr 00:1d:ba:19:9e:db
[   58.764733] sky2 0000:08:00.0: eth0: enabling interface
[  638.178629] sky2 0000:08:00.0: eth0: Link is up at 100 Mbps, full
duplex, flow control rx

-- 
Rafał
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