linux-kernel - Re: SATA resume slowness, e1000 MSI warning

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Date:	Tue, 06 Mar 2007 00:30:07 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	Ingo Molnar <mingo@...e.hu>
CC:	"Michael S. Tsirkin" <mst@...lanox.co.il>,
	Pavel Machek <pavel@....cz>,
	Jens Axboe <jens.axboe@...cle.com>,
	Adrian Bunk <bunk@...sta.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>, linux-pm@...ts.osdl.org,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Auke Kok <auke-jan.h.kok@...el.com>
Subject: Re: SATA resume slowness, e1000 MSI warning

Ingo Molnar wrote:
> i'm also getting this WARN_ON() from e1000:
> 
> BUG: at drivers/pci/msi.c:611 pci_enable_msi()
>  [<c01061bd>] show_trace_log_lvl+0x19/0x2e
>  [<c01062b6>] show_trace+0x12/0x14
>  [<c01062cc>] dump_stack+0x14/0x16
>  [<c024fcc4>] pci_enable_msi+0x6d/0x203
>  [<c02b709e>] e1000_request_irq+0x2e/0xe2
>  [<c02bb742>] e1000_resume+0x7f/0xef
>  [<c0249a68>] pci_device_resume+0x1a/0x44
>  [<c02b39ec>] resume_device+0xf7/0x16f
>  [<c02b3adb>] dpm_resume+0x77/0xcb
>  [<c02b3b69>] device_resume+0x3a/0x51
>  [<c014e669>] enter_state+0x193/0x1bb
>  [<c014e712>] state_store+0x81/0x97
>  [<c01b68bc>] subsys_attr_store+0x20/0x25
>  [<c01b6feb>] sysfs_write_file+0xce/0xf6
>  [<c017e16b>] vfs_write+0xb1/0x13a
>  [<c017e899>] sys_write+0x3d/0x61
>  [<c0105220>] syscall_call+0x7/0xb
> 
> seems harmless because it seems to work fine.


I would poke Eric Biederman(sp?) about this one.  Maybe its even solved 
by the MSI-enable-related patch he posted in the past 24-48 hours.

	Jeff


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