# git rev-parse -q --verify 66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19^{commit}
66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19
already have revision, skipping fetch
# git checkout -q -f -B kisskb 66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19
# git clean -qxdf
# < git log -1
# commit 66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19
# Merge: 473348891c36 dfd32cad146e
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Jan 12 10:52:40 2019 -0800
# 
#     Merge tag 'remove-dma_zalloc_coherent-5.0' of git://git.infradead.org/users/hch/dma-mapping
#     
#     Pull dma_zalloc_coherent() removal from Christoph Hellwig:
#      "We've always had a weird situation around dma_zalloc_coherent. To
#       safely support mapping the allocations to userspace major
#       architectures like x86 and arm have always zeroed allocations from
#       dma_alloc_coherent, but a couple other architectures were missing that
#       zeroing either always or in corner cases.
#     
#       Then later we grew anothe dma_zalloc_coherent interface to explicitly
#       request zeroing, but that just added __GFP_ZERO to the allocation
#       flags, which for some allocators that didn't end up using the page
#       allocator ended up being a no-op and still not zeroing the
#       allocations.
#     
#       So for this merge window I fixed up all remaining architectures to
#       zero the memory in dma_alloc_coherent, and made dma_zalloc_coherent a
#       no-op wrapper around dma_alloc_coherent, which fixes all of the above
#       issues.
#     
#       dma_zalloc_coherent is now pointless and can go away, and Luis helped
#       me writing a cocchinelle script and patch series to kill it, which I
#       think we should apply now just after -rc1 to finally settle these
#       issue"
#     
#     * tag 'remove-dma_zalloc_coherent-5.0' of git://git.infradead.org/users/hch/dma-mapping:
#       dma-mapping: remove dma_zalloc_coherent()
#       cross-tree: phase out dma_zalloc_coherent() on headers
#       cross-tree: phase out dma_zalloc_coherent()
# < /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 66c56cfa64d9dbb9efa8a06c1aece77e8d57ea19
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus_arm64-allmodconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  allmodconfig
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus_arm64-allmodconfig_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:40: LSE atomics not supported by binutils
/kisskb/src/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts:46.9-50.5: Warning (graph_port): /edp-panel/ports: graph port node name should be 'port'
/kisskb/src/arch/arm64/boot/dts/rockchip/rk3399-gru-bob.dts:25.9-29.5: Warning (graph_port): /edp-panel/ports: graph port node name should be 'port'
/kisskb/src/arch/arm64/boot/dts/rockchip/rk3399-sapphire-excavator.dts:94.9-98.5: Warning (graph_port): /edp-panel/ports: graph port node name should be 'port'
In file included from /kisskb/src/include/asm-generic/bug.h:18:0,
                 from /kisskb/src/arch/arm64/include/asm/bug.h:37,
                 from /kisskb/src/include/linux/bug.h:5,
                 from /kisskb/src/include/linux/mmdebug.h:5,
                 from /kisskb/src/include/linux/mm.h:9,
                 from /kisskb/src/drivers/dma/imx-dma.c:14:
/kisskb/src/drivers/dma/imx-dma.c: In function 'imxdma_sg_next':
/kisskb/src/include/linux/kernel.h:846:29: warning: comparison of distinct pointer types lacks a cast
   (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
                             ^
/kisskb/src/include/linux/kernel.h:860:4: note: in expansion of macro '__typecheck'
   (__typecheck(x, y) && __no_side_effects(x, y))
    ^
/kisskb/src/include/linux/kernel.h:870:24: note: in expansion of macro '__safe_cmp'
  __builtin_choose_expr(__safe_cmp(x, y), \
                        ^
/kisskb/src/include/linux/kernel.h:879:19: note: in expansion of macro '__careful_cmp'
 #define min(x, y) __careful_cmp(x, y, <)
                   ^
/kisskb/src/drivers/dma/imx-dma.c:288:8: note: in expansion of macro 'min'
  now = min(d->len, sg_dma_len(sg));
        ^
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:17,
                 from /kisskb/src/drivers/tty/serial/sh-sci.c:24:
/kisskb/src/drivers/tty/serial/sh-sci.c: In function 'sci_submit_rx':
/kisskb/src/include/linux/spinlock.h:279:3: 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:1338:16: note: 'flags' was declared here
  unsigned long flags;
                ^
Completed OK
# rm -rf /kisskb/build/linus_arm64-allmodconfig_arm64-gcc5.4
# Build took: 0:15:28.855465