Hi Remy,
Only the fact that USB is a nightmare to work with. No, honestly, we have a continuous stream of USB related problems with the current USB code.
This is not what I notice on the amount of fixes that are posted on the list...
Most problems go without a fix if there is an easy hardware replacement. Even diagnosing such a problem is usually too expensive for customers.
The only fixes I have seen the last year or two were related to newly added host-controller support. Apart from that it is quite silent in the u-boot-usb tree... But, anyway. I know it has some stability issues, although it is now much better compared to a year ago...
Yes it is and without a question I greatly appreciate your work for the USB part.
As I understand it this results from the ever more diverging USB implementation in U-Boot and e.g. in the Linux kernel.
Indeed, It has diverged that much that I did not succeed in finding the real origin of the code...
Sometimes I get the impression that we would save a lot of headache by starting afresh and porting the current Linux code into U-Boot thus leverage all this, but nobody yet dared to start such a feat.
Hey... I have dared to start it! (But it is a real pain to do it properly, and I stopped half way due to lack of time...)
I can understand that also. My intention of the mail was to transport my personal view of the whole area. USB problems in my experience have a very high cost even to diagnose, let alone fix.
Cheers Detlev