Re: REGRESSION: usb: dwc2: gadget: Add scatter-gather mode

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Hi again,

sorry for long lines. Reformatted now.

Hi Minas,


W dniu 12.03.2019 o 08:54, Minas Harutyunyan pisze:
Hi,

SB CV MSC tests failed starting from Test Case 6 with BNA interrupt on
ep1in. It's first BULK IN transaction after GET MAXLUN.


Thank you for reporting.

I bisected and identified my own

commit 10209abe87f5ebfd482a00323f5236d6094d0865
Author: Andrzej Pietrasiewicz <andrzej.p@xxxxxxxxxxx>
Date:   Mon Jan 21 14:44:47 2019 +0100

    usb: dwc2: gadget: Add scatter-gather mode

as the one introducing the regression.

At this moment I don't know how to fix it. I will lokk into it next week.

@colleagues from Samsung: can you have a look at the 4412 datasheet
and verify that in this patch all bits are properly set for scatter-gather mode?


Andrzej

PS. @Minas: Is there any reliable way to switch back and forth between
running CV software and regular usage of USB? What an aggressive piece
of software the USB 3 Gen X Command Verifier is! Its installer warns
"not to run the application" in case you use devices connected to the chosen
Host Controller because it will take over that HC. I thought this referred to
the application being installed and that as long I didn't run the tests
(i.e. the installed application) everything would be fine. How wrong I was!
The warning should have clearly indicated that it refers to the installer itself!
I was then unable to use keyboard/mouse connected to the docking station
even if I uninstalled the CV software. I use Linux 99% of the time, but for the
remaining 1% I want my Windows installation to be working, I don't know how
to repair Windows. I somehow managed to recover but I am not going to
install this on my laptop again. I managed to get some other laptop which
is not used with a docking station, but still with this software it is best to have
a dedicated machine only for that purpose. Maybe it is the Windows itself
and the application is implemented the only possible way, I don't know.



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