# git rev-parse -q --verify 682e6b4da5cbe8e9a53f979a58c2a9d7dc997175^{commit}
682e6b4da5cbe8e9a53f979a58c2a9d7dc997175
already have revision, skipping fetch
# git checkout -q -f -B kisskb 682e6b4da5cbe8e9a53f979a58c2a9d7dc997175
# git clean -qxdf
# < git log -1
# commit 682e6b4da5cbe8e9a53f979a58c2a9d7dc997175
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Tue Apr 10 21:49:32 2018 +1000
# 
#     rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops
#     
#     The OPAL RTC driver does not sleep in case it gets OPAL_BUSY or
#     OPAL_BUSY_EVENT from firmware, which causes large scheduling
#     latencies, up to 50 seconds have been observed here when RTC stops
#     responding (BMC reboot can do it).
#     
#     Fix this by converting it to the standard form OPAL_BUSY loop that
#     sleeps.
#     
#     Fixes: 628daa8d5abf ("powerpc/powernv: Add RTC and NVRAM support plus RTAS fallbacks")
#     Cc: stable@vger.kernel.org # v3.2+
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < git log --format=%s --max-count=1 682e6b4da5cbe8e9a53f979a58c2a9d7dc997175
# < make -s -j 48 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  defconfig
# make -s -j 48 ARCH=sparc64 O=/kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
WARNING: EXPORT symbol "_mcount" [vmlinux] version generation failed, symbol will not be versioned.
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_sparc64-defconfig_sparc64
# Build took: 0:01:02.534348