1. 05 Dec, 2017 21 commits
  2. 04 Dec, 2017 10 commits
    • Hans de Goede's avatar
      fbcon: Remove dmi quirk table · f2f4946b
      Hans de Goede authored
      This is now all handled in the drivers and communicated through
      fb_info.fbcon_rotate_hint.
      Acked-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
      Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171125193553.23986-8-hdegoede@redhat.com
      f2f4946b
    • Hans de Goede's avatar
      efifb: Set info->fbcon_rotate_hint based on drm_get_panel_orientation_quirk · 028b186f
      Hans de Goede authored
      On some hardware the LCD panel is not mounted upright in the casing,
      but rotated by 90 degrees. In this case we want the console to
      automatically be rotated to compensate.
      
      The drm subsys has a quirk table for this, use the
      drm_get_panel_orientation_quirk function to get the panel orientation
      and set info->fbcon_rotate_hint based on this, so that the fbcon console
      on top of efifb gets automatically rotated to compensate for the panel
      orientation.
      Acked-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
      Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171125193553.23986-7-hdegoede@redhat.com
      028b186f
    • Hans de Goede's avatar
      drm/i915: Add "panel orientation" property to the panel connector, v6. · 82daca29
      Hans de Goede authored
      Ideally we could use the VBT for this, that would be simple, in
      intel_dsi_init() check dev_priv->vbt.dsi.config->rotation, set
      connector->display_info.panel_orientation accordingly and call
      drm_connector_init_panel_orientation_property(), done.
      
      Unfortunately vbt.dsi.config->rotation is always 0 even on tablets
      with an upside down LCD and where the GOP is properly rotating the
      EFI fb in hardware.
      
      So instead we end up reading the rotation from the primary plane.
      
      This commit only implements the panel orientation property for DSI
      panels on BYT / CHT hardware, as all known non normal oriented panels
      sofar are only found on this hardware.
      
      Changes in v2:
      -Read back the rotation applied by the GOP from the primary plane
       instead of relying on dev_priv->vbt.dsi.config->rotation, because it
       seems that the VBT rotation filed is always 0 even on devices where the
       GOP does apply a rotation
      
      Changes in v3:
      -Rewrite the code to read back the orientation from the primary
       plane to contain all of this in intel_dsi.c instead of poking a bunch
       of holes between all the different layers
      
      Changes in v6:
      -Move hardware readout to intel_dsi_init()
      Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171125193553.23986-6-hdegoede@redhat.com
      82daca29
    • Hans de Goede's avatar
      drm/fb-helper: Apply panel orientation connector prop to the primary plane, v6. · 8f0cb418
      Hans de Goede authored
      Apply the "panel orientation" drm connector prop to the primary plane so
      that fbcon and fbdev using userspace programs display the right way up.
      
      Changes in v3:
      -Use a rotation member in struct drm_fb_helper_crtc and set that from
       drm_setup_crtcs instead of looping over all crtc's to find the right one
       later
      -Since we now no longer look at rotation quirks directly in the fbcon
       code, set fb_info.fbcon_rotate_hint when the panel is not mounted upright
       and we cannot use hardware rotation
      
      Changes in v4:
      -Make drm_fb_helper_init() init drm_fb_helper_crtc.rotation to
       DRM_MODE_ROTATE_0 for all crtcs, so that we do not end up setting the
       plane_state's rotation to an invalid value for disabled crtcs
       (caught by Fi.CI)
      
      Changes in v5:
      -Only use hardware (crtc primary plane) rotation for DRM_ROTATE_180,
       90 / 270 degree rotation requires special handling which we lack atm
      -Add a TODO comment for 90 / 270 degree hardware rotation
      -Add some comments to better document the default case when mapping
       sw_rotations to fbcon_rotate_hints
      
      Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=94894Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171125193553.23986-5-hdegoede@redhat.com
      8f0cb418
    • Hans de Goede's avatar
      drm: Add support for a panel-orientation connector property, v6 · 8d70f395
      Hans de Goede authored
      On some devices the LCD panel is mounted in the casing in such a way that
      the up/top side of the panel does not match with the top side of the
      device (e.g. it is mounted upside-down).
      
      This commit adds the necessary infra for lcd-panel drm_connector-s to
      have a "panel orientation" property to communicate how the panel is
      orientated vs the casing.
      
      Userspace can use this property to check for non-normal orientation and
      then adjust the displayed image accordingly by rotating it to compensate.
      
      Changes in v2:
      -Store panel_orientation in drm_display_info, so that drm_fb_helper.c can
       access it easily
      -Have a single drm_connector_init_panel_orientation_property rather then
       create and attach functions. The caller is expected to set
       drm_display_info.panel_orientation before calling this, then this will
       check for platform specific quirks overriding the panel_orientation and if
       the panel_orientation is set after this then it will attach the property.
      
      Changes in v6:
      -Use an enum (with kerneldoc) rather then #defines for
       DRM_MODE_PANEL_ORIENTATION_*
      Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171125193553.23986-4-hdegoede@redhat.com
      8d70f395
    • Hans de Goede's avatar
      drm: Add panel orientation quirks, v6. · 404d1a3e
      Hans de Goede authored
      Some x86 clamshell design devices use portrait tablet screens and a display
      engine which cannot rotate in hardware, so the firmware just leaves things
      as is and we cannot figure out that the display is oriented non upright
      from the hardware.
      
      So at least on x86, we need a quirk table for this. This commit adds a DMI
      based quirk table which is initially populated with 5 such devices: Asus
      T100HA, GPD Pocket, GPD win, I.T.Works TW891 and the VIOS LTH17.
      
      This quirk table will be used by the drm code to let userspace know that
      the display is not mounted upright inside the devices case through a new
      panel orientation drm-connector property, as well as to tell fbcon to
      rotate the console so that it shows the right way up.
      
      Changes in v5:
      -Add a kernel-doc comment documenting drm_get_panel_orientation_quirk()
      -Remove board_* matches from the dmi-matches for the VIOS LTH17 laptop,
       keeping only the (identical) sys_vendor and product_name matches.
       This is necessary because an older version of the bios has
       board_vendor set to VOIS instead of VIOS
      
      Changes in v6:
      -Add reference to added kernel-docs in Documentation/gpu/drm-kms-helpers.rst
      Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171125193553.23986-3-hdegoede@redhat.com
      404d1a3e
    • Hans de Goede's avatar
      fbcon: Add fbcon_rotate_hint to struct fb_info · c9e6a364
      Hans de Goede authored
      On some hardware the LCD panel is not mounted upright in the casing,
      but upside-down or rotated 90 degrees. In this case we want the console
      to automatically be rotated to compensate.
      
      The fbdev-driver may know about the need to rotate. Add a new
      fbcon_rotate_hint field to struct fb_info, which gets initialized to -1.
      If the fbdev-driver knows that some sort of rotation is necessary then
      it can set this field to a FB_ROTATE_* value to tell the fbcon console
      driver to rotate the console.
      Acked-by: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
      Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171125193553.23986-2-hdegoede@redhat.com
      c9e6a364
    • Gustavo Padovan's avatar
      Merge arlied/drm-next into drm-misc-next · 7b47c66c
      Gustavo Padovan authored
      We need to pull 66660d4c (drm: add connector info/property for
      non-desktop displays [v2]) into drm-misc-next to continue the development
      of the display rotation series.
      
      Effectively this also pulls 4.15-r2 into drm-misc-next.
      Signed-off-by: default avatarGustavo Padovan <gustavo.padovan@collabora.com>
      7b47c66c
    • Lucas Stach's avatar
      drm/prime: skip CPU sync in map/unmap dma_buf · ca0e68e2
      Lucas Stach authored
      Dma-bufs should already be device coherent, as they are only pulled in the
      CPU domain via the begin/end cpu_access calls. As we cache the mapping set
      up by dma_map_sg a CPU sync at this point will not actually guarantee proper
      coherency on non-coherent architectures, so we can as well stop pretending.
      
      This is an important performance fix for architectures which need explicit
      cache synchronization and userspace doing lots of dma-buf imports.
      Improves Weston on Etnaviv performance 5x, where before this patch > 90%
      of Weston CPU time was spent synchronizing caches for buffers which are
      already device coherent.
      Signed-off-by: default avatarLucas Stach <l.stach@pengutronix.de>
      Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Link: https://patchwork.freedesktop.org/patch/msgid/20171130173428.8666-1-l.stach@pengutronix.de
      ca0e68e2
    • Dave Airlie's avatar
      Merge tag 'drm-intel-next-2017-11-17-1' of... · ca797d29
      Dave Airlie authored
      Merge tag 'drm-intel-next-2017-11-17-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
      
      More change sets for 4.16:
      
      - Many improvements for selftests and other igt tests (Chris)
      - Forcewake with PUNIT->PMIC bus fixes and robustness (Hans)
      - Define an engine class for uABI (Tvrtko)
      - Context switch fixes and improvements (Chris)
      - GT powersavings and power gating simplification and fixes (Chris)
      - Other general driver clean-ups (Chris, Lucas, Ville)
      - Removing old, useless and/or bad workarounds (Chris, Oscar, Radhakrishna)
      - IPS, pipe config, etc in preparation for another Fast Boot attempt (Maarten)
      - OA perf fixes and support to Coffee Lake and Cannonlake (Lionel)
      - Fixes around GPU fault registers (Michel)
      - GEM Proxy (Tina)
      - Refactor of Geminilake and Cannonlake plane color handling (James)
      - Generalize transcoder loop (Mika Kahola)
      - New HW Workaround for Cannonlake and Geminilake (Rodrigo)
      - Resume GuC before using GEM (Chris)
      - Stolen Memory handling improvements (Ville)
      - Initialize entry in PPAT for older compilers (Chris)
      - Other fixes and robustness improvements on execbuf (Chris)
      - Improve logs of GEM_BUG_ON (Mika Kuoppala)
      - Rework with massive rename of GuC functions and files (Sagar)
      - Don't sanitize frame start delay if pipe is off (Ville)
      - Cannonlake clock fixes (Rodrigo)
      - Cannonlake HDMI 2.0 support (Rodrigo)
      - Add a GuC doorbells selftest (Michel)
      - Add might_sleep() check to our wait_for() (Chris)
      
      Many GVT changes for 4.16:
      
      - CSB HWSP update support (Weinan)
      - GVT debug helpers, dyndbg and debugfs (Chuanxiao, Shuo)
      - full virtualized opregion (Xiaolin)
      - VM health check for sane fallback (Fred)
      - workload submission code refactor for future enabling (Zhi)
      - Updated repo URL in MAINTAINERS (Zhenyu)
      - other many misc fixes
      
      * tag 'drm-intel-next-2017-11-17-1' of git://anongit.freedesktop.org/drm/drm-intel: (260 commits)
        drm/i915: Update DRIVER_DATE to 20171117
        drm/i915: Add a policy note for removing workarounds
        drm/i915/selftests: Report ENOMEM clearly for an allocation failure
        Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk"
        drm/i915: Calculate g4x intermediate watermarks correctly
        drm/i915: Calculate vlv/chv intermediate watermarks correctly, v3.
        drm/i915: Pass crtc_state to ips toggle functions, v2
        drm/i915: Pass idle crtc_state to intel_dp_sink_crc
        drm/i915: Enable FIFO underrun reporting after initial fastset, v4.
        drm/i915: Mark the userptr invalidate workqueue as WQ_MEM_RECLAIM
        drm/i915: Add might_sleep() check to wait_for()
        drm/i915/selftests: Add a GuC doorbells selftest
        drm/i915/cnl: Extend HDMI 2.0 support to CNL.
        drm/i915/cnl: Simplify dco_fraction calculation.
        drm/i915/cnl: Don't blindly replace qdiv.
        drm/i915/cnl: Fix wrpll math for higher freqs.
        drm/i915/cnl: Fix, simplify and unify wrpll variable sizes.
        drm/i915/cnl: Remove useless conversion.
        drm/i915/cnl: Remove spurious central_freq.
        drm/i915/selftests: exercise_ggtt may have nothing to do
        ...
      ca797d29
  3. 03 Dec, 2017 6 commits
    • Dave Airlie's avatar
      Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next · 2c1c55cb
      Dave Airlie authored
      Cross-subsystem Changes:
      
      - device tree doc for the Mitsubishi AA070MC01 and Tianma TM070RVHG71
      panels (Lukasz Majewski) and for a 2nd endpoint on stm32 (Philippe Cornu)
      
      Core Changes:
      
      The most important changes are:
      
      - Add drm_driver .last_close and .output_poll_changed helpers to reduce
      fbdev emulation footprint in drivers (Noralf)
      - Fix plane clipping in core and for vmwgfx (Ville)
      
      Then we have a bunch of of improvement for print and debug such as the
      addition of a framebuffer debugfs file. ELD connector, HDMI and
      improvements.  And a bunch of misc improvements, clean ups and style
      changes and doc updates
      
      [airlied: drop eld bits from amdgpu_dm]
      
      Driver Changes:
      
      - sii8620: filter unsupported modes and add DVI mode support (Maciej Purski)
      - rockchip: analogix_dp: Remove unnecessary init code (Jeffy Chen)
      - virtio, cirrus: add fb create_handle support to enable screenshots(Lepton Wu)
      - virtio: replace reference/unreference with get/put (Aastha Gupta)
      - vc4, gma500: Convert timers to use timer_setup() (Kees Cook)
      - vc4: Reject HDMI modes with too high of clocks (Eric)
      - vc4: Add support for more pixel formats (Dave Stevenson)
      - stm: dsi: Rename driver name to "stm32-display-dsi" (Philippe Cornu)
      - stm: ltdc: add a 2nd endpoint (Philippe Cornu)
      - via: use monotonic time for VIA_WAIT_IRQ (Arnd Bergmann)
      
      * tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc: (96 commits)
        drm/bridge: tc358767: add copyright lines
        MAINTAINERS: change maintainer for Rockchip drm drivers
        drm/vblank: Fix vblank timestamp debugs
        drm/via: use monotonic time for VIA_WAIT_IRQ
        dma-buf: Fix ifnullfree.cocci warnings
        drm/printer: Add drm_vprintf()
        drm/edid: Allow HDMI infoframe without VIC or S3D
        video/hdmi: Allow "empty" HDMI infoframes
        dma-buf/fence: Fix lock inversion within dma-fence-array
        drm/sti: Handle return value of platform_get_irq_byname
        drm/vc4: Add support for NV21 and NV61.
        drm/vc4: Use .pixel_order instead of custom .flip_cbcr
        drm/vc4: Add support for DRM_FORMAT_RGB888 and DRM_FORMAT_BGR888
        drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c
        drm: Check crtc_state->enable rather than crtc->enabled in drm_plane_helper_check_state()
        drm/vmwgfx: Try to fix plane clipping
        drm/vmwgfx: Use drm_plane_helper_check_state()
        drm/vmwgfx: Remove bogus crtc coords vs fb size check
        gpu: gma500: remove unneeded DRIVER_LICENSE #define
        drm: don't link DP aux i2c adapter to the hardware device node
        ...
      2c1c55cb
    • Linus Torvalds's avatar
      Linux 4.15-rc2 · ae64f9bd
      Linus Torvalds authored
      ae64f9bd
    • Linus Torvalds's avatar
      Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm · 87fc5c68
      Linus Torvalds authored
      Pull ARM fix from Russell King:
       "Just one fix this time around, for the late commit in the merge window
        that triggered a problem with qemu. Qemu is apparently also going to
        receive a fix for the discovered issue"
      
      * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
        ARM: avoid faulting on qemu
      87fc5c68
    • Linus Torvalds's avatar
      Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux · ae4806a3
      Linus Torvalds authored
      Pull i2c fixes from Wolfram Sang:
       "Here are two bugfixes for I2C, fixing a memleak in the core and irq
        allocation for i801.
      
        Also three bugfixes for the at24 eeprom driver which Bartosz collected
        while taking over maintainership for this driver"
      
      * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
        eeprom: at24: check at24_read/write arguments
        eeprom: at24: fix reading from 24MAC402/24MAC602
        eeprom: at24: correctly set the size for at24mac402
        i2c: i2c-boardinfo: fix memory leaks on devinfo
        i2c: i801: Fix Failed to allocate irq -2147483648 error
      ae4806a3
    • Linus Torvalds's avatar
      Merge tag 'hwmon-for-linus-v4.15-rc2' of... · 49a418d7
      Linus Torvalds authored
      Merge tag 'hwmon-for-linus-v4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
      
      Pull hwmon fixes from Guenter Roeck:
       "Fixes:
      
         - Drop reference to obsolete maintainer tree
      
         - Fix overflow bug in pmbus driver
      
         - Fix SMBUS timeout problem in jc42 driver
      
        For the SMBUS timeout handling, we had a brief discussion if this
        should be considered a bug fix or a feature. Peter says "it fixes real
        problems where the application misbehave due to faulty content when
        reading from an eeprom", and he needs the patch in his company's v4.14
        images. This is good enough for me and warrants backport to stable
        kernels"
      
      * tag 'hwmon-for-linus-v4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
        hwmon: (jc42) optionally try to disable the SMBUS timeout
        hwmon: (pmbus) Use 64bit math for DIRECT format values
        hwmon: Drop reference to Jean's tree
      49a418d7
    • Wolfram Sang's avatar
      Merge tag 'at24-4.15-fixes-for-wolfram' of... · edef3098
      Wolfram Sang authored
      Merge tag 'at24-4.15-fixes-for-wolfram' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current
      
      Please consider pulling the following fixes for v4.15. While it doesn't
      fix any regression introduced in the v4.15 merge window, we have a
      feature in at24 since linux v4.8 - reading the mac address block from
      at24mac series - which turned out to be not working.
      
      This pull request contains changes that fix it together with a patch
      that hardens the read and write argument sanitization with
      out-of-bounds checks that were missing.
      edef3098
  4. 02 Dec, 2017 3 commits
    • Linus Torvalds's avatar
      Merge tag 'nfs-for-4.15-2' of git://git.linux-nfs.org/projects/anna/linux-nfs · 2db767d9
      Linus Torvalds authored
      Pull NFS client fixes from Anna Schumaker:
       "These patches fix a problem with compiling using an old version of
        gcc, and also fix up error handling in the SUNRPC layer.
      
         - NFSv4: Ensure gcc 4.4.4 can compile initialiser for
           "invalid_stateid"
      
         - SUNRPC: Allow connect to return EHOSTUNREACH
      
         - SUNRPC: Handle ENETDOWN errors"
      
      * tag 'nfs-for-4.15-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
        SUNRPC: Handle ENETDOWN errors
        SUNRPC: Allow connect to return EHOSTUNREACH
        NFSv4: Ensure gcc 4.4.4 can compile initialiser for "invalid_stateid"
      2db767d9
    • Linus Torvalds's avatar
      Merge tag 'xfs-4.15-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · 788c1da0
      Linus Torvalds authored
      Pull xfs fixes from Darrick Wong:
       "Here are some bug fixes for 4.15-rc2.
      
         - fix memory leaks that appeared after removing ifork inline data
           buffer
      
         - recover deferred rmap update log items in correct order
      
         - fix memory leaks when buffer construction fails
      
         - fix memory leaks when bmbt is corrupt
      
         - fix some uninitialized variables and math problems in the quota
           scrubber
      
         - add some omitted attribution tags on the log replay commit
      
         - fix some UBSAN complaints about integer overflows with large sparse
           files
      
         - implement an effective inode mode check in online fsck
      
         - fix log's inability to retry quota item writeout due to transient
           errors"
      
      * tag 'xfs-4.15-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
        xfs: Properly retry failed dquot items in case of error during buffer writeback
        xfs: scrub inode mode properly
        xfs: remove unused parameter from xfs_writepage_map
        xfs: ubsan fixes
        xfs: calculate correct offset in xfs_scrub_quota_item
        xfs: fix uninitialized variable in xfs_scrub_quota
        xfs: fix leaks on corruption errors in xfs_bmap.c
        xfs: fortify xfs_alloc_buftarg error handling
        xfs: log recovery should replay deferred ops in order
        xfs: always free inline data before resetting inode fork during ifree
      788c1da0
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-4.15-rc2_cleanups' of... · e1ba1c99
      Linus Torvalds authored
      Merge tag 'riscv-for-linus-4.15-rc2_cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux
      
      Pull RISC-V cleanups and ABI fixes from Palmer Dabbelt:
       "This contains a handful of small cleanups that are a result of
        feedback that didn't make it into our original patch set, either
        because the feedback hadn't been given yet, I missed the original
        emails, or we weren't ready to submit the changes yet.
      
        I've been maintaining the various cleanup patch sets I have as their
        own branches, which I then merged together and signed. Each merge
        commit has a short summary of the changes, and each branch is based on
        your latest tag (4.15-rc1, in this case). If this isn't the right way
        to do this then feel free to suggest something else, but it seems sane
        to me.
      
        Here's a short summary of the changes, roughly in order of how
        interesting they are.
      
         - libgcc.h has been moved from include/lib, where it's the only
           member, to include/linux. This is meant to avoid tab completion
           conflicts.
      
         - VDSO entries for clock_get/gettimeofday/getcpu have been added.
           These are simple syscalls now, but we want to let glibc use them
           from the start so we can make them faster later.
      
         - A VDSO entry for instruction cache flushing has been added so
           userspace can flush the instruction cache.
      
         - The VDSO symbol versions for __vdso_cmpxchg{32,64} have been
           removed, as those VDSO entries don't actually exist.
      
         - __io_writes has been corrected to respect the given type.
      
         - A new READ_ONCE in arch_spin_is_locked().
      
         - __test_and_op_bit_ord() is now actually ordered.
      
         - Various small fixes throughout the tree to enable allmodconfig to
           build cleanly.
      
         - Removal of some dead code in our atomic support headers.
      
         - Improvements to various comments in our atomic support headers"
      
      * tag 'riscv-for-linus-4.15-rc2_cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux: (23 commits)
        RISC-V: __io_writes should respect the length argument
        move libgcc.h to include/linux
        RISC-V: Clean up an unused include
        RISC-V: Allow userspace to flush the instruction cache
        RISC-V: Flush I$ when making a dirty page executable
        RISC-V: Add missing include
        RISC-V: Use define for get_cycles like other architectures
        RISC-V: Provide stub of setup_profiling_timer()
        RISC-V: Export some expected symbols for modules
        RISC-V: move empty_zero_page definition to C and export it
        RISC-V: io.h: type fixes for warnings
        RISC-V: use RISCV_{INT,SHORT} instead of {INT,SHORT} for asm macros
        RISC-V: use generic serial.h
        RISC-V: remove spin_unlock_wait()
        RISC-V: `sfence.vma` orderes the instruction cache
        RISC-V: Add READ_ONCE in arch_spin_is_locked()
        RISC-V: __test_and_op_bit_ord should be strongly ordered
        RISC-V: Remove smb_mb__{before,after}_spinlock()
        RISC-V: Remove __smp_bp__{before,after}_atomic
        RISC-V: Comment on why {,cmp}xchg is ordered how it is
        ...
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