Hi all, After merging the hyperv tree, today's linux-next build (x86 allmodconfig) failed like this: /tmp/next/build/arch/x86/kernel/x86_init.c:36:12: error: static declaration of 'set_rtc_noop' follows non-static declaration 36 | static int set_rtc_noop(const struct timespec64 *now) { return -EINVAL; } | ^~~~~~~~~~~~ In file included from /tmp/next/build/arch/x86/include/asm/mpspec.h:7, from /tmp/next/build/arch/x86/include/asm/topology.h:38, from /tmp/next/build/include/linux/topology.h:36, from /tmp/next/build/include/linux/gfp.h:8, from /tmp/next/build/include/linux/xarray.h:15, from /tmp/next/build/include/linux/radix-tree.h:21, from /tmp/next/build/include/linux/idr.h:15, from /tmp/next/build/include/linux/kernfs.h:12, from /tmp/next/build/include/linux/sysfs.h:16, from /tmp/next/build/include/linux/kobject.h:20, from /tmp/next/build/include/linux/pci.h:35, from /tmp/next/build/arch/x86/kernel/x86_init.c:9: /tmp/next/build/arch/x86/include/asm/x86_init.h:333:12: note: previous declaration of 'set_rtc_noop' with type 'int(const struct timespec64 *)' 333 | extern int set_rtc_noop(const struct timespec64 *now); | ^~~~~~~~~~~~ /tmp/next/build/arch/x86/kernel/x86_init.c:37:13: error: static declaration of 'get_rtc_noop' follows non-static declaration 37 | static void get_rtc_noop(struct timespec64 *now) { } | ^~~~~~~~~~~~ In file included from /tmp/next/build/arch/x86/include/asm/mpspec.h:7, from /tmp/next/build/arch/x86/include/asm/topology.h:38, from /tmp/next/build/include/linux/topology.h:36, from /tmp/next/build/include/linux/gfp.h:8, from /tmp/next/build/include/linux/xarray.h:15, from /tmp/next/build/include/linux/radix-tree.h:21, from /tmp/next/build/include/linux/idr.h:15, from /tmp/next/build/include/linux/kernfs.h:12, from /tmp/next/build/include/linux/sysfs.h:16, from /tmp/next/build/include/linux/kobject.h:20, from /tmp/next/build/include/linux/pci.h:35, from /tmp/next/build/arch/x86/kernel/x86_init.c:9: /tmp/next/build/arch/x86/include/asm/x86_init.h:334:13: note: previous declaration of 'get_rtc_noop' with type 'void(struct timespec64 *)' 334 | extern void get_rtc_noop(struct timespec64 *now); | ^~~~~~~~~~~~ Caused by commit 25dcc7316ef7def25c ("x86/init: Make get/set_rtc_noop() public") I will use the hyperv tree from yesterday instead.