# git rev-parse -q --verify 3b72c834bba5200489ee0907d99f6da409a2e5b1^{commit}
3b72c834bba5200489ee0907d99f6da409a2e5b1
already have revision, skipping fetch
# git checkout -q -f -B kisskb 3b72c834bba5200489ee0907d99f6da409a2e5b1
# git clean -qxdf
# < git log -1
# commit 3b72c834bba5200489ee0907d99f6da409a2e5b1
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Thu Dec 19 23:26:38 2019 +1100
# 
#     powerpc/pseries: Remove redundant select of PPC_DOORBELL
#     
#     Commit d4e58e5928f8 ("powerpc/powernv: Enable POWER8 doorbell IPIs")
#     added a select of PPC_DOORBELL to PPC_PSERIES, but it already had a
#     select of PPC_DOORBELL. One is enough.
#     
#     Reported-by: Jason A. Donenfeld <Jason@zx2c4.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20191219125840.32592-1-mpe@ellerman.id.au
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 3b72c834bba5200489ee0907d99f6da409a2e5b1
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_powerpc-allnoconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  allnoconfig
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-next_powerpc-allnoconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-next_powerpc-allnoconfig_powerpc-gcc4.6
# Build took: 0:00:15.232193