# git rev-parse -q --verify c826df1217d3744205cac50bb30b3f4269c73d7d^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
# git rev-parse -q --verify c826df1217d3744205cac50bb30b3f4269c73d7d^{commit}
c826df1217d3744205cac50bb30b3f4269c73d7d
# git checkout -q -f -B kisskb c826df1217d3744205cac50bb30b3f4269c73d7d
# git clean -qxdf
# < git log -1
# commit c826df1217d3744205cac50bb30b3f4269c73d7d
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Wed Mar 4 12:20:38 2020 +0900
# 
#     kbuild: allow to run dt_binding_check without kernel configuration
#     
#     The dt_binding_check target is located outside of the
#     'ifneq ($(dtstree),) ... endif' block.
#     
#     So, you can run 'make dt_binding_check' on any architecture.
#     This makes a perfect sense because the dt-schema is arch-agnostic.
#     
#     The only one problem I see is that scripts/dtc/dtc is not always built.
#     For example, ARCH=x86 defconfig does not define CONFIG_DTC. Kbuild
#     descends into scripts/dtc/ with doing nothing. Then, it fails to build
#     *.example.dt.yaml files.
#     
#     Let's build scripts/dtc/dtc forcibly when running dt_binding_check.
#     
#     The dt-schema does not depend on any CONFIG option either, so you
#     should be able to run dt_binding_check without the .config file.
#     
#     Going forward, you can directly run 'make dt_binding_check' in a
#     pristine source tree.
#     
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
#     Reviewed-by: Rob Herring <robh@kernel.org>
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 c826df1217d3744205cac50bb30b3f4269c73d7d
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  defconfig
# < make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  help
# make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  olddefconfig
# make -s -j 24 ARCH=arm64 O=/kisskb/build/kbuild_arm64-defconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  
arch/arm64/Makefile:27: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
arch/arm64/Makefile:35: LSE atomics not supported by binutils
In file included from /kisskb/src/include/linux/rwsem.h:16:0,
                 from /kisskb/src/include/linux/notifier.h:15,
                 from /kisskb/src/include/linux/clk.h:14,
                 from /kisskb/src/drivers/tty/serial/sh-sci.c:20:
/kisskb/src/drivers/tty/serial/sh-sci.c: In function 'sci_dma_rx_submit':
/kisskb/src/include/linux/spinlock.h:288:3: warning: 'flags' may be used uninitialized in this function [-Wmaybe-uninitialized]
   _raw_spin_unlock_irqrestore(lock, flags); \
   ^
/kisskb/src/drivers/tty/serial/sh-sci.c:1348:16: note: 'flags' was declared here
  unsigned long flags;
                ^
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c: In function 'sh_mobile_i2c_isr':
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:399:26: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized]
   pd->msg->buf[real_pos] = data;
                          ^
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:372:16: note: 'data' was declared here
  unsigned char data;
                ^
Completed OK
# rm -rf /kisskb/build/kbuild_arm64-defconfig_arm64-gcc5.4
# Build took: 0:06:10.940484