# git rev-parse -q --verify 52a5525214d0d612160154d902956eca0558b7c0^{commit}
52a5525214d0d612160154d902956eca0558b7c0
already have revision, skipping fetch
# git checkout -q -f -B kisskb 52a5525214d0d612160154d902956eca0558b7c0
# git clean -qxdf
# < git log -1
# commit 52a5525214d0d612160154d902956eca0558b7c0
# Merge: bbfe0d6b8b73 e95adb9add75
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Sep 16 14:14:40 2019 -0700
# 
#     Merge tag 'iommu-updates-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
#     
#     Pull iommu updates from Joerg Roedel:
#     
#      - batched unmap support for the IOMMU-API
#     
#      - support for unlocked command queueing in the ARM-SMMU driver
#     
#      - rework the ATS support in the ARM-SMMU driver
#     
#      - more refactoring in the ARM-SMMU driver to support hardware
#        implemention specific quirks and errata
#     
#      - bounce buffering DMA-API implementatation in the Intel VT-d driver
#        for untrusted devices (like Thunderbolt devices)
#     
#      - fixes for runtime PM support in the OMAP iommu driver
#     
#      - MT8183 IOMMU support in the Mediatek IOMMU driver
#     
#      - rework of the way the IOMMU core sets the default domain type for
#        groups. Changing the default domain type on x86 does not require two
#        kernel parameters anymore.
#     
#      - more smaller fixes and cleanups
#     
#     * tag 'iommu-updates-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (113 commits)
#       iommu/vt-d: Declare Broadwell igfx dmar support snafu
#       iommu/vt-d: Add Scalable Mode fault information
#       iommu/vt-d: Use bounce buffer for untrusted devices
#       iommu/vt-d: Add trace events for device dma map/unmap
#       iommu/vt-d: Don't switch off swiotlb if bounce page is used
#       iommu/vt-d: Check whether device requires bounce buffer
#       swiotlb: Split size parameter to map/unmap APIs
#       iommu/omap: Mark pm functions __maybe_unused
#       iommu/ipmmu-vmsa: Disable cache snoop transactions on R-Car Gen3
#       iommu/ipmmu-vmsa: Move IMTTBCR_SL0_TWOBIT_* to restore sort order
#       iommu: Don't use sme_active() in generic code
#       iommu/arm-smmu-v3: Fix build error without CONFIG_PCI_ATS
#       iommu/qcom: Use struct_size() helper
#       iommu: Remove wrong default domain comments
#       iommu/dma: Fix for dereferencing before null checking
#       iommu/mediatek: Clean up struct mtk_smi_iommu
#       memory: mtk-smi: Get rid of need_larbid
#       iommu/mediatek: Fix VLD_PA_RNG register backup when suspend
#       memory: mtk-smi: Add bus_sel for mt8183
#       memory: mtk-smi: Invoke pm runtime_callback to enable clocks
#       ...
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 52a5525214d0d612160154d902956eca0558b7c0
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_orion5x_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  orion5x_defconfig
# make -s -j 48 ARCH=arm O=/kisskb/build/linus_orion5x_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:121:34: warning: 'levelspread[<U a00>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:88:6: note: 'levelspread[<U a00>]' was declared here
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2591:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1852:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/devlink.c: In function 'devlink_fmsg_prepare_skb':
/kisskb/src/net/core/devlink.c:4443:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/usb/core/devio.c: In function 'async_completed':
/kisskb/src/drivers/usb/core/devio.c:613:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_orion5x_defconfig_arm
# Build took: 0:00:54.345606