Hi Linus, After merging the gpio tree, today's linux-next build (x86_64 allmodconfig) failed like this: ERROR: "irq_chip_retrigger_hierarchy" [drivers/gpio/gpio-lpc18xx.ko] undefined! Caused by commit 5ddabfe8d3de ("gpio: lpc18xx: add GPIO pin interrupt controller support") I have used the gpio tree from next-20181207 for today. -- Cheers, Stephen Rothwell