Hi all, After merging the tegra tree, today's linux-next build (x86_64 allmodconfig) failed like this: In file included from arch/x86/include/asm/bug.h:84, from include/linux/bug.h:5, from arch/x86/include/asm/paravirt.h:15, from arch/x86/include/asm/irqflags.h:63, from include/linux/irqflags.h:16, from include/linux/rcupdate.h:26, from include/linux/rculist.h:11, from include/linux/pid.h:5, from include/linux/sched.h:14, from include/linux/ratelimit.h:6, from include/linux/dev_printk.h:16, from include/linux/device.h:15, from include/linux/of_reserved_mem.h:5, from drivers/memory/tegra/tegra210-emc-table.c:6: include/linux/clk/tegra.h: In function 'tegra_cpu_rail_off_ready': include/linux/clk/tegra.h:112:15: error: 'tegra_cpu_car_ops' undeclared (first use in this function) 112 | if (WARN_ON(!tegra_cpu_car_ops->rail_off_ready)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: in definition of macro 'WARN_ON' 121 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/clk/tegra.h:112:15: note: each undeclared identifier is reported only once for each function it appears in 112 | if (WARN_ON(!tegra_cpu_car_ops->rail_off_ready)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: in definition of macro 'WARN_ON' 121 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/clk/tegra.h: In function 'tegra_cpu_clock_suspend': include/linux/clk/tegra.h:120:15: error: 'tegra_cpu_car_ops' undeclared (first use in this function) 120 | if (WARN_ON(!tegra_cpu_car_ops->suspend)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: in definition of macro 'WARN_ON' 121 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/clk/tegra.h: In function 'tegra_cpu_clock_resume': include/linux/clk/tegra.h:128:15: error: 'tegra_cpu_car_ops' undeclared (first use in this function) 128 | if (WARN_ON(!tegra_cpu_car_ops->resume)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: in definition of macro 'WARN_ON' 121 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ In file included from arch/x86/include/asm/bug.h:84, from include/linux/bug.h:5, from include/linux/cpumask.h:14, from arch/x86/include/asm/cpumask.h:5, from arch/x86/include/asm/msr.h:11, from arch/x86/include/asm/processor.h:22, from arch/x86/include/asm/timex.h:5, from include/linux/timex.h:65, from include/linux/time32.h:13, from include/linux/time.h:60, from include/linux/stat.h:19, from include/linux/module.h:13, from drivers/media/cec/platform/tegra/tegra_cec.c:14: include/linux/clk/tegra.h: In function 'tegra_cpu_rail_off_ready': include/linux/clk/tegra.h:112:15: error: 'tegra_cpu_car_ops' undeclared (first use in this function) 112 | if (WARN_ON(!tegra_cpu_car_ops->rail_off_ready)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: in definition of macro 'WARN_ON' 121 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/clk/tegra.h:112:15: note: each undeclared identifier is reported only once for each function it appears in 112 | if (WARN_ON(!tegra_cpu_car_ops->rail_off_ready)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: in definition of macro 'WARN_ON' 121 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/clk/tegra.h: In function 'tegra_cpu_clock_suspend': include/linux/clk/tegra.h:120:15: error: 'tegra_cpu_car_ops' undeclared (first use in this function) 120 | if (WARN_ON(!tegra_cpu_car_ops->suspend)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: in definition of macro 'WARN_ON' 121 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ include/linux/clk/tegra.h: In function 'tegra_cpu_clock_resume': include/linux/clk/tegra.h:128:15: error: 'tegra_cpu_car_ops' undeclared (first use in this function) 128 | if (WARN_ON(!tegra_cpu_car_ops->resume)) | ^~~~~~~~~~~~~~~~~ include/asm-generic/bug.h:121:25: note: in definition of macro 'WARN_ON' 121 | int __ret_warn_on = !!(condition); \ | ^~~~~~~~~ Presumably caused by commit bbe30ae68d14 ("cpuidle: tegra: Enable compile testing") I have used the tegra tree from next-20211001 for today. -- Cheers, Stephen Rothwell