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To: Maxim Sobolev <sobomax@portaone.com>
In-Reply-To: Your message of "Fri, 25 Mar 2005 22:25:31 +0200."
             <424473BB.4010607@portaone.com> 
Date: Fri, 25 Mar 2005 20:51:57 +0000
From: Ian Dowse <iedowse@maths.tcd.ie>
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Subject: Re: cvs commit: src/sys/dev/usb usb.c 
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In message <424473BB.4010607@portaone.com>, Maxim Sobolev writes:
>This is still suboptimal, since even after this change when ehci is 
>enabled some (if not most) USB devices are detected after system goes 
>into milti-user mode. Obviously, this makes it impossible to mount root 
>fs off the USB HDD/FDD/CD. The simplest way to solve this problem is to 
>add some sufficiently long and configurable delay before mounting root 
>fs (similar to one used by the SCSI) when ehci is enabled to let those 
>devices to be detected and attached.

Could you send me an example dmesg that shows this? As far as I
know, doing the explore when cold == 1 should attach all USB devices
before even interrupts are enabled.

This should be the case with PCI USB host controllers that are
compiled into the kernel or pre-loaded by the loader - if you load
the module later and I think also with cardbus USB controllers,
then the USB host controller won't get attached with cold == 1 so
none of the early exploration code runs.

Ian