On Tue, Dec 07, 2021 at 10:24:41PM +0000, Thinh Nguyen wrote:
> Hi,
>
> I came across this change fe2072cc1768 ("usb/hcd: Ensure scatter-gather
> is not used for isoc transfers") and wonder why it was made. The
> description doesn't explain much. I was trying to look for the archived
> conversation about this but couldn't find it.
>
> Can someone help explain why we enforce this to all hosts? Or help point
> to the archived conversation with the full explanation?
I don't remember the details; it was nine years ago. However, you can find the
email thread for the original patch submission here:
https://marc.info/?t=134122051600006&r=1&w=2
The discussion leading up to it apparently started here:
https://marc.info/?l=linux-usb&m=134098509628768&w=2
Alan Stern
