FROMLIST: efi/libstub: disable LTO

With CONFIG_LTO_CLANG, we produce LLVM IR instead of object files. Since LTO
is not really needed here and the Makefile assumes we produce an object file,
disable LTO for libstub.

Bug: 62093296
Bug: 67506682
Change-Id: Ieaa3d7e2c694655788f480f4351bf7c4d3fce090
(am from https://patchwork.kernel.org/patch/10060309/)
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>

diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile
index adaa4a964f0c548811dedae5f22e846f76fe44a1..69b3fbfb7f976a6f52504d5c85cbe134d2c1f07e 100644 (file)
--- a/drivers/firmware/efi/libstub/Makefile
+++ b/drivers/firmware/efi/libstub/Makefile
@@ -20,7 +20,8 @@ cflags-$(CONFIG_EFI_ARMSTUB)  += -I$(srctree)/scripts/dtc/libfdt
 KBUILD_CFLAGS                  := $(cflags-y) -DDISABLE_BRANCH_PROFILING \
                                   -D__NO_FORTIFY \
                                   $(call cc-option,-ffreestanding) \
-                                  $(call cc-option,-fno-stack-protector)
+                                  $(call cc-option,-fno-stack-protector) \
+                                  $(DISABLE_LTO)
 
 GCOV_PROFILE                   := n
 KASAN_SANITIZE                 := n