On 2019-09-05 15:49, Wolfram Sang wrote: > Hi Lee, > > I understand you are in a hurry, but please double check before > sending... Linus indicated that an rc8 is coming up, which should provide an extra week. https://lwn.net/Articles/798152/ > On Thu, Sep 05, 2019 at 11:22:47AM +0100, Lee Jones wrote: >> We have a production-level laptop (Lenovo Yoga C630) which is exhibiting >> a rather horrific bug. When I2C HID devices are being scanned for at >> boot-time the QCom Geni based I2C (Serial Engine) attempts to use DMA. >> When it does, the laptop reboots and the user never sees the OS. >> >> The beautiful thing about this approach is that, *if* the Geni SE DMA >> ever starts working, we can remove the C code and any old properties >> left in older DTs just become NOOP. Older kernels with newer DTs (less >> of a priority) *still* will not work - but they do not work now anyway. > > ... becasue this paragraph doesn't fit anymore. Needs to be reworded. > >> >> Fixes: 8bc529b25354 ("soc: qcom: geni: Add support for ACPI") > > As said in the other thread, I don't get it, but this is not a show > stopper for me. WAG: because ACPI made some driver load at all, and when it did it something started happening which crashed some machines. Cheers, Peter
