Re: [PATCH v4 1/1] usb: xhci: Add Clear_TT_Buffer

2019-05-07 Thread Alan Stern
On Tue, 7 May 2019, Mathias Nyman wrote: > On 6.5.2019 17.57, Alan Stern wrote: > > On Mon, 6 May 2019, Jim Lin wrote: > > > >> USB 2.0 specification chapter 11.17.5 says "as part of endpoint halt > >> processing for full-/low-speed endpoints connected via a TT, the host > >> software must use th

[PATCH v4 1/1] usb: xhci: Add Clear_TT_Buffer

2019-05-06 Thread Jim Lin
USB 2.0 specification chapter 11.17.5 says "as part of endpoint halt processing for full-/low-speed endpoints connected via a TT, the host software must use the Clear_TT_Buffer request to the TT to ensure that the buffer is not in the busy state". In our case, a full-speed speaker (ConferenceCam)