Re: [Bug 203297] Synaptics touchpad TM-3127 functionality broken by PCI runtime power management patch on 4.20.2

2019-04-29 Thread Jean Delvare
On Mon, 2019-04-29 at 10:53 +0200, Benjamin Tissoires wrote: > On Mon, Apr 29, 2019 at 10:38 AM Jarkko Nikula > wrote: > > I got another thought about this. I noticed these input drivers need > > SMBus Host Notify, maybe that explain the PM dependency? If that's the > > only dependency then we

Re: [Bug 203297] Synaptics touchpad TM-3127 functionality broken by PCI runtime power management patch on 4.20.2

2019-04-29 Thread Benjamin Tissoires
On Mon, Apr 29, 2019 at 10:38 AM Jarkko Nikula wrote: > > On 4/29/19 10:45 AM, Benjamin Tissoires wrote: > >> I would like to ask help from input subsystem experts what kind of SMBus > >> power state dependency Synaptics RMI4 SMBus devices have since it cease > >> to work if SMBus controllers

Re: [Bug 203297] Synaptics touchpad TM-3127 functionality broken by PCI runtime power management patch on 4.20.2

2019-04-29 Thread Jarkko Nikula
On 4/29/19 10:45 AM, Benjamin Tissoires wrote: I would like to ask help from input subsystem experts what kind of SMBus power state dependency Synaptics RMI4 SMBus devices have since it cease to work if SMBus controllers idles between transfers and how this is best to fix? Hmm, I am not sure

Re: [Bug 203297] Synaptics touchpad TM-3127 functionality broken by PCI runtime power management patch on 4.20.2

2019-04-29 Thread Benjamin Tissoires
On Fri, Apr 26, 2019 at 2:14 PM Jarkko Nikula wrote: > > On 4/22/19 4:08 PM, Bjorn Helgaas wrote: > > https://bugzilla.kernel.org/show_bug.cgi?id=203297 > > > > Regression, suspected but as yet unconfirmed cause: > > > >c5eb1190074c ("PCI / PM: Allow runtime PM without callback functions") >

Re: [Bug 203297] Synaptics touchpad TM-3127 functionality broken by PCI runtime power management patch on 4.20.2

2019-04-29 Thread Rafael J. Wysocki
On Fri, Apr 26, 2019 at 2:14 PM Jarkko Nikula wrote: > > On 4/22/19 4:08 PM, Bjorn Helgaas wrote: > > https://bugzilla.kernel.org/show_bug.cgi?id=203297 > > > > Regression, suspected but as yet unconfirmed cause: > > > >c5eb1190074c ("PCI / PM: Allow runtime PM without callback functions") >

Re: [Bug 203297] Synaptics touchpad TM-3127 functionality broken by PCI runtime power management patch on 4.20.2

2019-04-26 Thread Jarkko Nikula
On 4/22/19 4:08 PM, Bjorn Helgaas wrote: https://bugzilla.kernel.org/show_bug.cgi?id=203297 Regression, suspected but as yet unconfirmed cause: c5eb1190074c ("PCI / PM: Allow runtime PM without callback functions") backported to 4.20 stable as 39e1be324c2f. With help of Keijo it was

[Bug 203297] Synaptics touchpad TM-3127 functionality broken by PCI runtime power management patch on 4.20.2

2019-04-22 Thread Bjorn Helgaas
https://bugzilla.kernel.org/show_bug.cgi?id=203297 Regression, suspected but as yet unconfirmed cause: c5eb1190074c ("PCI / PM: Allow runtime PM without callback functions") backported to 4.20 stable as 39e1be324c2f. Keijo Vaara reported: > After upgrading from 4.20.1 to 4.20.2 Synaptics