[PATCH 5.15 104/121] kbuild: disable header exports for UML in a straightforward way

From: Greg Kroah-Hartman
Date: Tue Sep 13 2022 - 10:41:53 EST

From: Masahiro Yamada <masahiroy@xxxxxxxxxx>

[ Upstream commit 1b620d539ccc18a1aca1613d9ff078115a7891a1 ]

Previously 'make ARCH=um headers' stopped because of missing

The error is not shown since commit ed102bf2afed ("um: Fix W=1
missing-include-dirs warnings") added arch/um/include/uapi/asm/Kbuild.

Hard-code the unsupported architecture, so it works like before.

Fixes: ed102bf2afed ("um: Fix W=1 missing-include-dirs warnings")
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Acked-by: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
Makefile | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index eca45b7be9c1e..32253ea989217 100644
--- a/Makefile
+++ b/Makefile
@@ -1332,8 +1332,7 @@ hdr-inst := -f $(srctree)/scripts/Makefile.headersinst obj

PHONY += headers
headers: $(version_h) scripts_unifdef uapi-asm-generic archheaders archscripts
- $(if $(wildcard $(srctree)/arch/$(SRCARCH)/include/uapi/asm/Kbuild),, \
- $(error Headers not exportable for the $(SRCARCH) architecture))
+ $(if $(filter um, $(SRCARCH)), $(error Headers not exportable for UML))
$(Q)$(MAKE) $(hdr-inst)=include/uapi
$(Q)$(MAKE) $(hdr-inst)=arch/$(SRCARCH)/include/uapi