On Thu, Jan 24, 2019 at 09:47:02PM +0300, Matwey V. Kornilov wrote: > By the way, why do we need to store the qh in urb->hcpriv? > qh can always be accessible through urb->ep->hcpriv > Wouldn't it be better to drop entire urb->hcpriv usage? I am not sure why. The code is there since the first commit in a decade ago. But I tend to agree with you. In a quick search for urb->hcpriv and urb->ep->hcpriv, based on the usage in core/hcd.c, it seems to me that urb->hcpriv should not be changed in each controller driver, but I see both have been used in most controller drivers. I will leave this to others to educate me. Regards, -Bin.
