Current build of pata_cs5536 for i386 UML fails with: ERROR: modpost: "__tracepoint_write_msr" [drivers/ata/pata_cs5536.ko] undefined! ERROR: modpost: "do_trace_write_msr" [drivers/ata/pata_cs5536.ko] undefined! ERROR: modpost: "__tracepoint_read_msr" [drivers/ata/pata_cs5536.ko] undefined! ERROR: modpost: "do_trace_read_msr" [drivers/ata/pata_cs5536.ko] undefined! Add the arch/x86/lib/msr.o binary to resolve these undefined symbols. Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Cc: Richard Weinberger <richard@xxxxxx> Cc: Anton Ivanov <anton.ivanov@xxxxxxxxxxxxxxxxxx> Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> Cc: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx> Cc: linux-ide@xxxxxxxxxxxxxxx Cc: linux-um@xxxxxxxxxxxxxxxxxxx Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx> --- v2: change from not building on UML to fixing the build on UML v3: add Rev-by: Damien Le Moal arch/x86/um/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -- a/arch/x86/um/Makefile b/arch/x86/um/Makefile --- a/arch/x86/um/Makefile +++ b/arch/x86/um/Makefile @@ -21,7 +21,7 @@ obj-y += checksum_32.o syscalls_32.o obj-$(CONFIG_ELF_CORE) += elfcore.o subarch-y = ../lib/string_32.o ../lib/atomic64_32.o ../lib/atomic64_cx8_32.o -subarch-y += ../lib/cmpxchg8b_emu.o ../lib/atomic64_386_32.o +subarch-y += ../lib/cmpxchg8b_emu.o ../lib/atomic64_386_32.o ../lib/msr.o subarch-y += ../kernel/sys_ia32.o else