Re: [PATCH v2] USB: Disable USB2 LPM at shutdown

2019-06-08 Thread Kai-Heng Feng
at 22:17, Alan Stern wrote: On Thu, 6 Jun 2019, Kai-Heng Feng wrote: at 15:55, Kai-Heng Feng wrote: at 18:22, Kai-Heng Feng wrote: at 00:01, Kai-Heng Feng wrote: On Jan 30, 2019, at 16:21, Greg KH wrote: On Thu, Jan 24, 2019 at 02:16:43PM +0800, Kai-Heng Feng wrote: The QCA Rome US

Re: [PATCH v2] USB: Disable USB2 LPM at shutdown

2019-06-06 Thread Alan Stern
On Thu, 6 Jun 2019, Kai-Heng Feng wrote: > at 15:55, Kai-Heng Feng wrote: > > > at 18:22, Kai-Heng Feng wrote: > > > >> at 00:01, Kai-Heng Feng wrote: > >> > On Jan 30, 2019, at 16:21, Greg KH wrote: > > On Thu, Jan 24, 2019 at 02:16:43PM +0800, Kai-Heng Feng wrote: > > The

Re: [PATCH v2] USB: Disable USB2 LPM at shutdown

2019-06-06 Thread Kai-Heng Feng
at 15:55, Kai-Heng Feng wrote: at 18:22, Kai-Heng Feng wrote: at 00:01, Kai-Heng Feng wrote: On Jan 30, 2019, at 16:21, Greg KH wrote: On Thu, Jan 24, 2019 at 02:16:43PM +0800, Kai-Heng Feng wrote: The QCA Rome USB Bluetooth controller has several issues once LPM gets enabled: - Fails

Re: [PATCH v2] USB: Disable USB2 LPM at shutdown

2019-01-30 Thread Kai-Heng Feng
> On Jan 30, 2019, at 16:21, Greg KH wrote: > > On Thu, Jan 24, 2019 at 02:16:43PM +0800, Kai-Heng Feng wrote: >> The QCA Rome USB Bluetooth controller has several issues once LPM gets >> enabled: >> - Fails to get enumerated in coldboot. [1] >> - Drains more power (~ 0.2W) when the system is

Re: [PATCH v2] USB: Disable USB2 LPM at shutdown

2019-01-30 Thread Greg KH
On Thu, Jan 24, 2019 at 02:16:43PM +0800, Kai-Heng Feng wrote: > The QCA Rome USB Bluetooth controller has several issues once LPM gets > enabled: > - Fails to get enumerated in coldboot. [1] > - Drains more power (~ 0.2W) when the system is in S5. [2] > - Disappears after a warmboot. [2] > > The

[PATCH v2] USB: Disable USB2 LPM at shutdown

2019-01-23 Thread Kai-Heng Feng
The QCA Rome USB Bluetooth controller has several issues once LPM gets enabled: - Fails to get enumerated in coldboot. [1] - Drains more power (~ 0.2W) when the system is in S5. [2] - Disappears after a warmboot. [2] The issue happens because the device lingers at LPM L1 in S5, so device can't get