[PATCH] usb: Add 1ms delay after first Get Descriptor request

[Marek Vasut]

On 11/3/22 22:31, Janne Grunau wrote:

Hi,

[...]

>>> In any case we need a way to enable/disable this as it will slow down
>>> unaffected platforms.
>>
>> This makes little difference, since anyone can plug such device into a port
>> and suddenly the platform is affected. We cannot really predict what users
>> have on their desks.
> 
> Would it make sense to limit it to dwc3 host controllers or do you fear
> the same problem could happen with other controllers on fast boards?

I believe the DWC3 triggers it on "fast" devices now, but this is a 
generic issue. The U-Boot USB stack is just way too efficient (well, 
more efficient than any OS anyway, because it is basically just a tight 
loop), no OS triggers this because the OSes take their time.

> In any case patch fixes the problem here as well.
> 
> Tested-by: Janne Grunau <j at jannau.net>

Thanks!

(and sorry for the delay)