netdev - Re: [net-2.6 PATCH] ixgb: call pci_disable_device in ixgb

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Message-Id: <20101028.101957.71111430.davem@davemloft.net>
Date:	Thu, 28 Oct 2010 10:19:57 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeffrey.t.kirsher@...el.com
Cc:	netdev@...r.kernel.org, gospo@...hat.com, bphilips@...ell.com,
	bhutchings@...arflare.com, emil.s.tantilov@...el.com
Subject: Re: [net-2.6 PATCH] ixgb: call pci_disable_device in ixgb_remove

From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Date: Thu, 28 Oct 2010 03:59:49 -0700

> From: Emil Tantilov <emil.s.tantilov@...el.com>
> 
> ixgb fails to work after reload on recent kernels:
> 
> rmmod ixgb (dev->current_state = PCI_UNKNOWN)
> modprobe ixgb (pci_enable_device will bail leaving current_state to PCI_UNKNOWN)
> ifup eth0
> do_IRQ: 2.82 No irq handler for vector (irq -1)
> 
> The issue was exposed by commit fcd097f31a6ee207cc0c3da9cccd2a86d4334785
> PCI: MSI: Remove unsafe and unnecessary hardware access
> 
> which avoids HW writes for power states != PCI_D0
> 
> CC: Ben Hutchings <bhutchings@...arflare.com>
> Signed-off-by: Emil Tantilov <emil.s.tantilov@...el.com>
> Tested-by: Jeff Pieper <jeffrey.e.pieper@...el.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>

Applied.
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