On 19.07.2015 18:25, Brian Campbell wrote: > > When resetting a device the number of active TTs may need to be > corrected by xhci_update_tt_active_eps, but the number of old active > endpoints supplied to it was always zero, so the number of TTs and the > bandwidth reserved for them was not updated, and could rise > unnecessarily. > > This affected systems using Intel's Patherpoint chipset, which rely on > software bandwidth checking. For example, a Lenovo X230 would lose the > ability to use ports on the docking station after enough suspend/resume > cycles because the bandwidth calculated would rise with every cycle when > a suitable device is attached. > > The correct number of active endpoints is calculated in the same way as > in xhci_reserve_bandwidth. > Thanks, I remember there was an issue about something eating bandwidth as suspend/resume that never got fixed? here it is: http://marc.info/?l=linux-usb&m=141561758015676&w=2 Not sure if Kenneth has triggered it lately? Anyways, patch looks good, I'll send it forward -Mathias -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
