Re: [linux-usb-devel] PROBLEM: when booting from USB-HDD device kernel
Ilia A. Petrov (firstname.lastname@example.org)
Mon, 07 Jul 2003 13:20:32 +0400
David Brownell wrote:
> Ilia A. Petrov wrote:
>> When kernel is mounting root file system it is doing it too fast so
>> usb-support have not ime to scan bus for mass-storage devices and
>> connect them.
>> or, imho better way, - when completing init of usb bus, first scans it
>> and connect all devices and only after all devices were connected
>> returns to main kernel code.
> That might not entirely solve the problem, since the relevant device
> could drop off the bus temporarily, but it seems like it'd be a step
> forward. How would you make root hub ("bus") initialization do that?
i'm not familiar with linux usb implementation so may be it's wrong:
after sending global reset over the bus you can manually check (not
trough the hub driver) root port connection status and call enumeration
another way- add an option to kernel for booting from usb mass-storage,
where place an input-waiting code, because my current solution adds such
delay for all boots (ide,scsi,usb)
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