cvs commit: src/sys/dev/usb usb.c

[Ian Dowse]

In message <424473BB.4010607 at 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