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Re: OHCI root_port_reset() deadly loop...

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From: David Miller <davem@...>
To: <benh@...>
Cc: <david-b@...>, <linux-usb-users@...>, <linux-kernel@...>, <greg@...>
Subject: Re: OHCI root_port_reset() deadly loop...
Date: Tuesday, October 9, 2007 - 1:26 am

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: Tue, 09 Oct 2007 15:13:36 +1000


I'm concerned about that as well, thanks for bringing it up.

My understanding, however, is that the critical thing is that the EHCI
device reset being done by the EHCI driver probe occurs and completes
first.  If that is true, then just making sure EHCI loads initially is
a sufficient constraint to fix this problem.
-
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Messages in current thread:
OHCI root_port_reset() deadly loop..., David Miller, (Sun Oct 7, 2:53 am)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Sun Oct 7, 3:31 am)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Sun Oct 7, 3:51 am)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Mon Oct 8, 7:54 pm)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 12:36 am)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 9, 12:44 am)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 12:38 pm)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 9, 4:41 pm)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 5:09 pm)
Re: OHCI root_port_reset() deadly loop..., Greg KH, (Tue Oct 9, 4:46 pm)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 5:05 pm)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 12:09 am)
Re: OHCI root_port_reset() deadly loop..., Benjamin Herrenschmidt, (Tue Oct 9, 1:13 am)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 9, 1:26 am)
Re: OHCI root_port_reset() deadly loop..., Benjamin Herrenschmidt, (Tue Oct 9, 2:37 am)
Re: OHCI root_port_reset() deadly loop..., Greg KH, (Mon Oct 8, 11:10 pm)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Mon Oct 8, 11:16 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., Alan Stern, (Tue Oct 9, 12:01 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., Greg KH, (Tue Oct 9, 1:39 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., Alan Stern, (Tue Oct 9, 2:42 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 9, 5:27 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 5:43 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 9, 6:00 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Miller, (Wed Oct 10, 12:35 am)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Miller, (Mon Oct 15, 6:01 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Brownell, (Mon Oct 15, 7:39 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Miller, (Mon Oct 15, 7:58 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 16, 2:26 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., Alan Stern, (Tue Oct 16, 11:23 am)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 16, 6:08 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., Alan Stern, (Wed Oct 17, 11:51 am)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Miller, (Wed Oct 17, 7:03 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., Alan Stern, (Thu Oct 18, 10:28 am)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 16, 6:06 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., Greg KH, (Tue Oct 16, 6:20 pm)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., Alan Stern, (Wed Oct 17, 11:56 am)
Re: [Linux-usb-users] OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 2:59 pm)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Mon Oct 8, 11:34 pm)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Mon Oct 8, 11:42 pm)
Re: OHCI root_port_reset() deadly loop..., Greg KH, (Tue Oct 9, 12:39 am)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 1:00 am)
Re: OHCI root_port_reset() deadly loop..., Benjamin Herrenschmidt, (Tue Oct 9, 2:43 am)
Re: OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 2:48 pm)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 9, 1:23 am)
Re: OHCI root_port_reset() deadly loop..., David Miller, (Tue Oct 9, 12:47 am)
Re: OHCI root_port_reset() deadly loop..., Greg KH, (Tue Oct 9, 2:06 am)
Re: [linux-usb-devel] OHCI root_port_reset() deadly loop..., David Brownell, (Tue Oct 9, 3:22 pm)
Re: [linux-usb-devel] OHCI root_port_reset() deadly loop..., Alan Stern, (Wed Oct 10, 11:32 am)
Re: OHCI root_port_reset() deadly loop..., Benjamin Herrenschmidt, (Tue Oct 9, 1:11 am)