https://bugzilla.kernel.org/show_bug.cgi?id=203419 --- Comment #27 from Mathias Nyman (mathias.nyman@xxxxxxxxxxxxxxx) --- Created attachment 288295 --> https://bugzilla.kernel.org/attachment.cgi?id=288295&action=edit testpatch that doesn't clear TT buffer after protocol STALL Adding same patch and comment here as in bug #207065, it might help in this case as well. "Traces show its related to Clearing TT buffer after a STALL on endpoint 0. The first stall looks like a protocol stall, not a function stall, meaning that endpoint isn't really halted, just that the device does not support the request in the control transfer. Anyway, xhci starts clearing what it assumes is a halted endpoint, including clearing the hub TT buffer. Specs are a bit unclear if TT should be cleared in this case, or at least I couldn't find it." Attached is a tespatch that doesn't clear TT buffer on protocol stalls, withexcessive tracing and debugging. -- You are receiving this mail because: You are watching the assignee of the bug.
