> From: Wei Liu <wei.liu@xxxxxxxxxx> > Sent: Wednesday, January 6, 2021 8:24 AM > To: Dexuan Cui <decui@xxxxxxxxxxxxx> > > > > That said, I don't know if there is any hard rule in regard of > > the timing here. If there is, then v5.12 is OK to me. :-) > > > > By the time you posted this (Dec 22), 5.11 was already more or less > "frozen". Linus wanted -next patches to be merged before Christmas. Got it. Thanks for the explanation! > The way I see it this is a new sysfs interface so I think this is > something new, which is for 5.12. Ok. > Do you think this should be considered a bug fix? > > Wei. Then let's not consider it for v5.11. For now I think the userspace tool/daemon can check 'dmesg' for the existence of ACPI S4 state as a workaround. This is not ideal, but it should work reasonably well, assuming the tool/daemon runs early enough, so the kernel msg buffer is not yet filled up and overwritten. :-) Thanks, -- Dexuan
