Re: [PATCH v3] USB: hub.c: decrease the number of attempts of enumeration scheme

[Eugeniu Rosca]

Dear Alan,
Dear Greg,

On Fri, Sep 11, 2020 at 11:12:28AM -0400, Alan Stern wrote:

> The thing is, I'm afraid that without these retry loops, some devices
> will stop working.  If that happens, we will not be able to keep this
> patch in place; we will just have to accept that we fail the PET test.
> 
> Alan Stern

Does this mean that Linux community leaves no choice but to ship a
forked kernel (with no chance of alignment to upstream) for
organizations which design embedded devices where USB plays a key
role, hence requires passing the USB-IF Compliance Program [*]?

Is there hope to give users a knob (build-time or run-time) which would
enable the behavior expected and thoroughly described in compliance
docs, particularly chapter "6.7.22 A-UUT Device No Response for
connection timeout" of "USB On-The-Go and Embedded Host Automated
Compliance Plan" [**]?

[*] https://www.usb.org/compliance
[**] https://www.usb.org/sites/default/files/otgeh_compliance_plan_1_2.pdf

-- 
Best regards,
Eugeniu Rosca