On Wed, Feb 01, 2023 at 03:19:08PM -0800, Florian Fainelli wrote: > On 2/1/23 10:16, Greg Kroah-Hartman wrote: > > On Wed, Feb 01, 2023 at 09:44:04AM -0800, Florian Fainelli wrote: > > > From: Peter Chen <peter.chen@xxxxxxx> > > > > > > commit 4bb4fc0dbfa23acab9b762949b91ffd52106fe4b upstream > > > > > > With this change, there will be a wakeup entry at /sys/../power/wakeup, > > > and the user could use this entry to choose whether enable xhci wakeup > > > features (wake up system from suspend) or not. > > > > > > Tested-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> > > > Reviewed-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx> > > > Signed-off-by: Peter Chen <peter.chen@xxxxxxx> > > > Signed-off-by: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> > > > Link: https://lore.kernel.org/r/20200918131752.16488-6-mathias.nyman@xxxxxxxxxxxxxxx > > > Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> > > > Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx> > > > --- > > > drivers/usb/host/xhci-plat.c | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > Why is this new feature needed on these older kernels? What does it fix > > that is broken? > > It fixes the inability to make the XHCI controller a wake-up device since > there is no /sys/*/*xhci/power/wakeup sysfs entry to manipulate unless this > patch is applied. But that is a new feature, not a bugfix. What systems need this for these older kernels that will actually update to them in order to pick up this change? thanks, greg k-h
