Eric Lee / smarc-fsl-linux-kernel

08 Jan, 2019

1 commit

  • dfd32cad1   dma-mapping: remove dma_zalloc_coherent() ... Browse Code »

    dma_zalloc_coherent() is no longer needed as it has no users because
    dma_alloc_coherent() already zeroes out memory for us.

    The Coccinelle grammar rule that used to check for dma_alloc_coherent()
    + memset() is modified so that it just tells the user that the memset is
    not needed anymore.

    Suggested-by: Christoph Hellwig
    Signed-off-by: Luis Chamberlain
    Signed-off-by: Christoph Hellwig

    Luis Chamberlain
     

06 Jan, 2019

2 commits

30 Dec, 2018

1 commit

  • 668c35f69   Merge tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild ... Browse Code »

    Pull Kbuild updates from Masahiro Yamada:
    "Kbuild core:
    - remove unneeded $(call cc-option,...) switches
    - consolidate Clang compiler flags into CLANG_FLAGS
    - announce the deprecation of SUBDIRS
    - fix single target build for external module
    - simplify the dependencies of 'prepare' stage targets
    - allow fixdep to directly write to .*.cmd files
    - simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS
    - change if_changed_rule to accept multi-line recipe
    - move .SECONDARY special target to scripts/Kbuild.include
    - remove redundant 'set -e'
    - improve parallel execution for CONFIG_HEADERS_CHECK
    - misc cleanups

    Treewide fixes and cleanups
    - set Clang flags correctly for PowerPC boot images
    - fix UML build error with CONFIG_GCC_PLUGINS
    - remove unneeded patterns from .gitignore files
    - refactor firmware/Makefile
    - remove unneeded rules for *offsets.s
    - avoid unneeded regeneration of intermediate .s files
    - clean up ./Kbuild

    Modpost:
    - remove unused -M, -K options
    - fix false positive warnings about section mismatch
    - use simple devtable lookup instead of linker magic
    - misc cleanups

    Coccinelle:
    - relax boolinit.cocci checks for overall consistency
    - fix warning messages of boolinit.cocci

    Other tools:
    - improve -dirty check of scripts/setlocalversion
    - add a tool to generate compile_commands.json from .*.cmd files"

    * tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits)
    kbuild: remove unused cmd_gentimeconst
    kbuild: remove $(obj)/ prefixes in ./Kbuild
    treewide: add intermediate .s files to targets
    treewide: remove explicit rules for *offsets.s
    firmware: refactor firmware/Makefile
    firmware: remove unnecessary patterns from .gitignore
    scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore
    um: remove unused filechk_gen_header in Makefile
    scripts: add a tool to produce a compile_commands.json file
    kbuild: add -Werror=implicit-int flag unconditionally
    kbuild: add -Werror=strict-prototypes flag unconditionally
    kbuild: add -fno-PIE flag unconditionally
    scripts: coccinelle: Correct warning message
    scripts: coccinelle: only suggest true/false in files that already use them
    kbuild: handle part-of-module correctly for *.ll and *.symtypes
    kbuild: refactor part-of-module
    kbuild: refactor quiet_modtag
    kbuild: remove redundant quiet_modtag for $(obj-m)
    kbuild: refactor Makefile.asm-generic
    user/Makefile: Fix typo and capitalization in comment section
    ...

    Linus Torvalds
     

16 Dec, 2018

2 commits

25 Nov, 2018

1 commit

22 Aug, 2018

1 commit

14 Aug, 2018

1 commit

18 Jul, 2018

1 commit

07 Jun, 2018

1 commit

  • 8715ee75f   Merge tag 'kbuild-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild ... Browse Code »

    Pull Kbuild updates from Masahiro Yamada:

    - improve fixdep to coalesce consecutive slashes in dep-files

    - fix some issues of the maintainer string generation in deb-pkg script

    - remove unused CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX and clean-up
    several tools and linker scripts

    - clean-up modpost

    - allow to enable the dead code/data elimination for PowerPC in EXPERT
    mode

    - improve two coccinelle scripts for better performance

    - pass endianness and machine size flags to sparse for all architecture

    - misc fixes

    * tag 'kbuild-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits)
    kbuild: add machine size to CHECKFLAGS
    kbuild: add endianness flag to CHEKCFLAGS
    kbuild: $(CHECK) doesnt need NOSTDINC_FLAGS twice
    scripts: Fixed printf format mismatch
    scripts/tags.sh: use `find` for $ALLSOURCE_ARCHS generation
    coccinelle: deref_null: improve performance
    coccinelle: mini_lock: improve performance
    powerpc: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selected
    kbuild: Allow LD_DEAD_CODE_DATA_ELIMINATION to be selectable if enabled
    kbuild: LD_DEAD_CODE_DATA_ELIMINATION no -ffunction-sections/-fdata-sections for module build
    kbuild: Fix asm-generic/vmlinux.lds.h for LD_DEAD_CODE_DATA_ELIMINATION
    modpost: constify *modname function argument where possible
    modpost: remove redundant is_vmlinux() test
    modpost: use strstarts() helper more widely
    modpost: pass struct elf_info pointer to get_modinfo()
    checkpatch: remove VMLINUX_SYMBOL() check
    vmlinux.lds.h: remove no-op macro VMLINUX_SYMBOL()
    kbuild: remove CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX
    export.h: remove code for prefixing symbols with underscore
    depmod.sh: remove symbol prefix support
    ...

    Linus Torvalds
     

22 May, 2018

2 commits

  • 21195f8e9   coccinelle: deref_null: improve performance ... Browse Code »

    Move rules looking for some special cases of safe dereferences before
    the collection of NULL-tested values. The special cases are fairly
    rare, but somewhat costly to find, because isomorphisms create many
    variants of the rules. There is thus no need to search for them over
    and over for each NULL tested expression. Collecting them just once
    is sufficient and more efficient.

    Signed-off-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Julia Lawall
     
  • 32d0572a7   coccinelle: mini_lock: improve performance ... Browse Code »

    Replace by ... when any. is slow, and in some
    obscure cases involving backward jumps it doesn't force the unlock to
    actually come after the end of the if.

    Signed-off-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Julia Lawall
     

31 Mar, 2018

1 commit

28 Mar, 2018

1 commit

22 Mar, 2018

1 commit

  • 3ae7fb202   drm: Remove drm_property_{un/reference}_blob aliases ... Browse Code »

    This patch remove the compatibility aliases
    drm_property_{reference/unreference}_blob of
    drm_property_blob_{get/put} since all callers have been converted to the
    prefered _{get/put}.

    Remove the helpers from the semantic patch drm-get-put-cocci.

    Signed-off-by: Haneen Mohammed
    Signed-off-by: Sean Paul
    Link: https://patchwork.freedesktop.org/patch/msgid/20180320133749.GA11695@haneen-VirtualBox

    Haneen Mohammed
     

19 Mar, 2018

1 commit

  • e007488b2   drm: remove drm_mode_object_{un/reference} aliases ... Browse Code »

    This patch remove the compatibility aliases
    drm_mode_object_{reference/unreference} of drm_mode_object_{get/put}
    since all callers have been converted to the prefered _{get/put}.

    Remove the helpers from the semantic patch drm-get-put-cocci.

    Signed-off-by: Haneen Mohammed
    Signed-off-by: Sean Paul
    Link: https://patchwork.freedesktop.org/patch/msgid/20180319055820.GA17502@haneen-VirtualBox

    Haneen Mohammed
     

02 Mar, 2018

1 commit

07 Feb, 2018

2 commits

29 Jan, 2018

1 commit

16 Jan, 2018

5 commits

  • 1936f8f30   Coccinelle: kzalloc-simple: Rename kzalloc-simple to zalloc-simple ... Browse Code »

    Rename kzalloc-simple to zalloc-simple since now the rule is not
    specific to kzalloc function only, but also to many other zero memory
    allocating functions specified in the rule.

    Suggested-by: SF Markus Elfring
    Signed-off-by: Himanshu Jha
    Acked-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Himanshu Jha
     
  • 3e47599fd   Coccinelle: ifnullfree: Trim the warning reported in report mode ... Browse Code »

    Remove the unncessary part of the warning reported, in the report
    mode, so that a single warning produced does not exceed more than line
    and hence improve readability of the warnings produced in the subsequent
    reports to a file.

    Signed-off-by: Himanshu Jha
    Acked-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Himanshu Jha
     
  • d8e7eb51b   Coccinelle: alloc_cast: Add more memory allocating functions to the list ... Browse Code »

    Add more memory allocating functions that are frequently used in the
    kernel code to the existing list and remove the useless casts where
    it is unnecessary.

    But preserve those casts having __attribute__ such as __force, __iomem,
    etc. which are used by Sparse in the static analysis of the code.

    Also remove two blank lines at EOF.

    Signed-off-by: Himanshu Jha
    Acked-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Himanshu Jha
     
  • cb00a4f3d   Coccinelle: array_size: report even if include is missing ... Browse Code »

    Rule r does not depend on rule i (which is the include of
    linux/kernel.h) so the output should not depend on i in
    org and report mode.

    Signed-off-by: Jérémy Lefaure
    Acked-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Jérémy Lefaure
     
  • 5e2d9da5b   Coccinelle: kzalloc-simple: Add all zero allocating functions ... Browse Code »

    There are many instances where memory is allocated using regular
    allocator functions immediately followed by setting the allocated
    memory to 0 value using memset.

    We already have zero memory allocator functions to set the memory to
    0 value instead of manually setting it using memset.

    Therefore, use zero memory allocating functions instead of regular
    memory allocators followed by memset 0 to remove redundant memset and
    make the code more cleaner and also reduce the code size.

    Signed-off-by: Himanshu Jha
    Acked-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Himanshu Jha
     

22 Nov, 2017

1 commit

18 Nov, 2017

1 commit

  • 2ce079f04   Merge tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/m… ... Browse Code »

    …asahiroy/linux-kbuild

    Pull Kbuild misc updates from Masahiro Yamada:

    - Clean up and fix RPM package build

    - Fix a warning in DEB package build

    - Improve coccicheck script

    - Improve some semantic patches

    * tag 'kbuild-misc-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
    docs: dev-tools: coccinelle: delete out of date wiki reference
    coccinelle: orplus: reorganize to improve performance
    coccinelle: use exists to improve efficiency
    builddeb: Pass the kernel:debarch substvar to dpkg-genchanges
    Coccinelle: use false positive annotation
    coccinelle: fix verbose message about .cocci file being run
    coccinelle: grep Options and Requires fields more precisely
    Coccinelle: make DEBUG_FILE option more useful
    coccinelle: api: detect identical chip data arrays
    coccinelle: Improve setup_timer.cocci matching
    Coccinelle: setup_timer: improve messages from setup_timer
    kbuild: rpm-pkg: do not force -jN in submake
    kbuild: rpm-pkg: keep spec file until make mrproper
    kbuild: rpm-pkg: fix jobserver unavailable warning
    kbuild: rpm-pkg: replace $RPM_BUILD_ROOT with %{buildroot}
    kbuild: rpm-pkg: fix build error when CONFIG_MODULES is disabled
    kbuild: rpm-pkg: refactor mkspec with here doc
    kbuild: rpm-pkg: clean up mkspec
    kbuild: rpm-pkg: install vmlinux.bz2 unconditionally
    kbuild: rpm-pkg: remove ppc64 specific image handling

    Linus Torvalds
     

16 Nov, 2017

2 commits

  • e60e1ee60   Merge tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux ... Browse Code »

    Pull drm updates from Dave Airlie:
    "This is the main drm pull request for v4.15.

    Core:
    - Atomic object lifetime fixes
    - Atomic iterator improvements
    - Sparse/smatch fixes
    - Legacy kms ioctls to be interruptible
    - EDID override improvements
    - fb/gem helper cleanups
    - Simple outreachy patches
    - Documentation improvements
    - Fix dma-buf rcu races
    - DRM mode object leasing for improving VR use cases.
    - vgaarb improvements for non-x86 platforms.

    New driver:
    - tve200: Faraday Technology TVE200 block.

    This "TV Encoder" encodes a ITU-T BT.656 stream and can be found in
    the StorLink SL3516 (later Cortina Systems CS3516) as well as the
    Grain Media GM8180.

    New bridges:
    - SiI9234 support

    New panels:
    - S6E63J0X03, OTM8009A, Seiko 43WVF1G, 7" rpi touch panel, Toshiba
    LT089AC19000, Innolux AT043TN24

    i915:
    - Remove Coffeelake from alpha support
    - Cannonlake workarounds
    - Infoframe refactoring for DisplayPort
    - VBT updates
    - DisplayPort vswing/emph/buffer translation refactoring
    - CCS fixes
    - Restore GPU clock boost on missed vblanks
    - Scatter list updates for userptr allocations
    - Gen9+ transition watermarks
    - Display IPC (Isochronous Priority Control)
    - Private PAT management
    - GVT: improved error handling and pci config sanitizing
    - Execlist refactoring
    - Transparent Huge Page support
    - User defined priorities support
    - HuC/GuC firmware refactoring
    - DP MST fixes
    - eDP power sequencing fixes
    - Use RCU instead of stop_machine
    - PSR state tracking support
    - Eviction fixes
    - BDW DP aux channel timeout fixes
    - LSPCON fixes
    - Cannonlake PLL fixes

    amdgpu:
    - Per VM BO support
    - Powerplay cleanups
    - CI powerplay support
    - PASID mgr for kfd
    - SR-IOV fixes
    - initial GPU reset for vega10
    - Prime mmap support
    - TTM updates
    - Clock query interface for Raven
    - Fence to handle ioctl
    - UVD encode ring support on Polaris
    - Transparent huge page DMA support
    - Compute LRU pipe tweaks
    - BO flag to allow buffers to opt out of implicit sync
    - CTX priority setting API
    - VRAM lost infrastructure plumbing

    qxl:
    - fix flicker since atomic rework

    amdkfd:
    - Further improvements from internal AMD tree
    - Usermode events
    - Drop radeon support

    nouveau:
    - Pascal temperature sensor support
    - Improved BAR2 handling
    - MMU rework to support Pascal MMU

    exynos:
    - Improved HDMI/mixer support
    - HDMI audio interface support

    tegra:
    - Prep work for tegra186
    - Cleanup/fixes

    msm:
    - Preemption support for a5xx
    - Display fixes for 8x96 (snapdragon 820)
    - Async cursor plane fixes
    - FW loading rework
    - GPU debugging improvements

    vc4:
    - Prep for DSI panels
    - fix T-format tiling scanout
    - New madvise ioctl

    Rockchip:
    - LVDS support

    omapdrm:
    - omap4 HDMI CEC support

    etnaviv:
    - GPU performance counters groundwork

    sun4i:
    - refactor driver load + TCON backend
    - HDMI improvements
    - A31 support
    - Misc fixes

    udl:
    - Probe/EDID read fixes.

    tilcdc:
    - Misc fixes.

    pl111:
    - Support more variants

    adv7511:
    - Improve EDID handling.
    - HDMI CEC support

    sii8620:
    - Add remote control support"

    * tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux: (1480 commits)
    drm/rockchip: analogix_dp: Use mutex rather than spinlock
    drm/mode_object: fix documentation for object lookups.
    drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU
    drm/i915: Move init_clock_gating() back to where it was
    drm/i915: Prune the reservation shared fence array
    drm/i915: Idle the GPU before shinking everything
    drm/i915: Lock llist_del_first() vs llist_del_all()
    drm/i915: Calculate ironlake intermediate watermarks correctly, v2.
    drm/i915: Disable lazy PPGTT page table optimization for vGPU
    drm/i915/execlists: Remove the priority "optimisation"
    drm/i915: Filter out spurious execlists context-switch interrupts
    drm/amdgpu: use irq-safe lock for kiq->ring_lock
    drm/amdgpu: bypass lru touch for KIQ ring submission
    drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()
    drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()
    drm/amd/powerplay: initialize a variable before using it
    drm/amd/powerplay: suppress KASAN out of bounds warning in vega10_populate_all_memory_levels
    drm/amd/amdgpu: fix evicted VRAM bo adjudgement condition
    drm/vblank: Tune drm_crtc_accurate_vblank_count() WARN down to a debug
    drm/rockchip: add CONFIG_OF dependency for lvds
    ...

    Linus Torvalds
     
  • 937c812df   coccinelle: orplus: reorganize to improve performance ... Browse Code »

    Adding two #define constants is less common than performing & and |
    operations on them, so put the addition first to reduce the set of cases
    that have to be considered in detail. At the same time, add & and |
    patterns for both arguments of +, to account for commutativity and obtain
    more results.

    Running time is divided by 3 when applying this to the whole kernel on my
    laptop with an Intel i5-6200U CPU.

    Signed-off-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Julia Lawall
     

14 Nov, 2017

6 commits

  • 6851ba1a1   coccinelle: use exists to improve efficiency ... Browse Code »

    This just needs to find any reassignment of the loop iterator, and doesn't
    need such a thing on all execution paths, so use exists on the first rule.

    Signed-off-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Julia Lawall
     
  • 69c4907ba   Coccinelle: use false positive annotation ... Browse Code »

    /// is to describe the semantic patch, while //# indicates reasons
    for false positives.

    Signed-off-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Julia Lawall
     
  • e0be348e4   coccinelle: grep Options and Requires fields more precisely ... Browse Code »

    Currently, the required version for badzero.cocci is picked up from
    its "Comments:" line since it contains the word "Requires".

    Surprisingly, ld-version.sh can extract the version number from the
    string "Requires Coccinelle version 1.0.0-rc20 or later", but this
    expectation is fragile. Fix the .cocci file. I removed "-rc20"
    because ld-version.sh cannot handle it.

    Make the coccicheck script to see exact patterns for "Options:" and
    "Requires:" in order to avoid accidental matching to what just happens
    to appear in comment lines.

    Signed-off-by: Masahiro Yamada
    Acked-by: Julia Lawall
    Acked-by: Nicolas Palix

    Masahiro Yamada
     
  • a44b86645   coccinelle: api: detect identical chip data arrays ... Browse Code »

    This semantic patch detects duplicate arrays declared using BQ27XXX_DATA
    within a single structure. It is currently specific to the file
    drivers/power/supply/bq27xxx_battery.c. Nevertheless, having the script in
    the kernel will allow others to check their code if the data structures
    change in the future.

    Signed-off-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Julia Lawall
     
  • 1b18d05c7   coccinelle: Improve setup_timer.cocci matching ... Browse Code »

    This improves the patch mode of setup_timer.cocci. Several patterns
    were missing:
    - assignments-before-init_timer() cases
    - limit the .data case removal to the specific struct timer_list instance
    - handling calls by dereference (timer->field vs timer.field)

    Cc: Gilles Muller
    Cc: Nicolas Palix
    Cc: Michal Marek
    Cc: cocci@systeme.lip6.fr
    Signed-off-by: Kees Cook
    Acked-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Kees Cook
     
  • bc27b77df   Coccinelle: setup_timer: improve messages from setup_timer ... Browse Code »

    Allow messages about multiple timers.

    Signed-off-by: Julia Lawall
    Signed-off-by: Masahiro Yamada

    Julia Lawall
     

02 Nov, 2017

1 commit

  • b24413180   License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Browse Code »

    Many source files in the tree are missing licensing information, which
    makes it harder for compliance tools to determine the correct license.

    By default all files without license information are under the default
    license of the kernel, which is GPL version 2.

    Update the files which contain no license information with the 'GPL-2.0'
    SPDX license identifier. The SPDX identifier is a legally binding
    shorthand, which can be used instead of the full boiler plate text.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne.

    How this work was done:

    Patches were generated and checked against linux-4.14-rc6 for a subset of
    the use cases:
    - file had no licensing information it it.
    - file was a */uapi/* one with no licensing information in it,
    - file was a */uapi/* one with existing licensing information,

    Further patches will be generated in subsequent months to fix up cases
    where non-standard license headers were used, and references to license
    had to be inferred by heuristics based on keywords.

    The analysis to determine which SPDX License Identifier to be applied to
    a file was done in a spreadsheet of side by side results from of the
    output of two independent scanners (ScanCode & Windriver) producing SPDX
    tag:value files created by Philippe Ombredanne. Philippe prepared the
    base worksheet, and did an initial spot review of a few 1000 files.

    The 4.13 kernel was the starting point of the analysis with 60,537 files
    assessed. Kate Stewart did a file by file comparison of the scanner
    results in the spreadsheet to determine which SPDX license identifier(s)
    to be applied to the file. She confirmed any determination that was not
    immediately clear with lawyers working with the Linux Foundation.

    Criteria used to select files for SPDX license identifier tagging was:
    - Files considered eligible had to be source code files.
    - Make and config files were included as candidates if they contained >5
    lines of source
    - File already had some variant of a license header in it (even if
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     

26 Sep, 2017

1 commit

  • 9a96f5503   drm: introduce drm_dev_{get/put} functions ... Browse Code »

    Reference counting functions in the kernel typically use get/put suffixes. For
    maintaining coding style consistency, introduce drm_dev_{get/put} functions. All
    callers of drm_dev_ref() API have been converted in this patch and hence it has
    been dropped while the drm_dev_unref() API with non-trivial number of users
    remains for compatibility.

    The semantic patch scripts/coccinelle/api/drm-get-put.cocci has been updated
    with the new helper for conversion of drm_dev_unref() to drm_dev_put()

    Signed-off-by: Aishwarya Pant
    Signed-off-by: Daniel Vetter
    Link: https://patchwork.freedesktop.org/patch/msgid/6babda56134035a98220d5d37a4fd4048df214ce.1506413698.git.aishpant@gmail.com

    Aishwarya Pant
     

28 Feb, 2017

2 commits

  • 6472e5090   drm: Introduce drm_property_blob_{get,put}() ... Browse Code »

    For consistency with other reference counting APIs in the kernel, add
    drm_property_blob_get() and drm_property_blob_put() to reference count
    DRM blob properties.

    Compatibility aliases are added to keep existing code working. To help
    speed up the transition, all the instances of the old functions in the
    DRM core are already replaced in this commit.

    A semantic patch is provided that can be used to convert all drivers to
    the new helpers.

    Reviewed-by: Sean Paul
    Acked-by: Christian König
    Signed-off-by: Thierry Reding
    Link: http://patchwork.freedesktop.org/patch/msgid/20170228144643.5668-7-thierry.reding@gmail.com

    Thierry Reding
     
  • e6b62714e   drm: Introduce drm_gem_object_{get,put}() ... Browse Code »

    For consistency with other reference counting APIs in the kernel, add
    drm_gem_object_get() and drm_gem_object_put(), as well as an unlocked
    variant of the latter, to reference count GEM buffer objects.

    Compatibility aliases are added to keep existing code working. To help
    speed up the transition, all the instances of the old functions in the
    DRM core are already replaced in this commit.

    The existing semantic patch for the DRM subsystem-wide conversion is
    extended to account for these new helpers.

    Reviewed-by: Sean Paul
    Acked-by: Christian König
    Signed-off-by: Thierry Reding
    Link: http://patchwork.freedesktop.org/patch/msgid/20170228144643.5668-6-thierry.reding@gmail.com

    Thierry Reding