1. 09 Jan, 2020 1 commit
    • Russell King's avatar
      i2c: fix bus recovery stop mode timing · cf8ce8b8
      Russell King authored
      The I2C specification states that tsu:sto for standard mode timing must
      be at minimum 4us. Pictographically, this is:
      
      SCL: ____/~~~~~~~~~
      SDA: _________/~~~~
             ->|    |<- 4us minimum
      
      We are currently waiting 2.5us between asserting SCL and SDA, which is
      in violation of the standard. Adjust the timings to ensure that we meet
      what is stipulated as the minimum timings to ensure that all devices
      correctly interpret the STOP bus transition.
      
      This is more important than trying to generate a square wave with even
      duty cycle.
      Signed-off-by: default avatarRussell King <rmk+kernel@armlinux.org.uk>
      Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
      cf8ce8b8
  2. 06 Jan, 2020 3 commits
  3. 05 Jan, 2020 7 commits
    • Linus Torvalds's avatar
      Linux 5.5-rc5 · c79f46a2
      Linus Torvalds authored
      c79f46a2
    • Linus Torvalds's avatar
      Merge tag 'riscv/for-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · 768fc661
      Linus Torvalds authored
      Pull RISC-V fixes from Paul Walmsley:
       "Several fixes for RISC-V:
      
         - Fix function graph trace support
      
         - Prefix the CSR IRQ_* macro names with "RV_", to avoid collisions
           with macros elsewhere in the Linux kernel tree named "IRQ_TIMER"
      
         - Use __pa_symbol() when computing the physical address of a kernel
           symbol, rather than __pa()
      
         - Mark the RISC-V port as supporting GCOV
      
        One DT addition:
      
         - Describe the L2 cache controller in the FU540 DT file
      
        One documentation update:
      
         - Add patch acceptance guideline documentation"
      
      * tag 'riscv/for-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        Documentation: riscv: add patch acceptance guidelines
        riscv: prefix IRQ_ macro names with an RV_ namespace
        clocksource: riscv: add notrace to riscv_sched_clock
        riscv: ftrace: correct the condition logic in function graph tracer
        riscv: dts: Add DT support for SiFive L2 cache controller
        riscv: gcov: enable gcov for RISC-V
        riscv: mm: use __pa_symbol for kernel symbols
      768fc661
    • Paul Walmsley's avatar
      Documentation: riscv: add patch acceptance guidelines · 0e194d9d
      Paul Walmsley authored
      Formalize, in kernel documentation, the patch acceptance policy for
      arch/riscv.  In summary, it states that as maintainers, we plan to
      only accept patches for new modules or extensions that have been
      frozen or ratified by the RISC-V Foundation.
      
      We've been following these guidelines for the past few months.  In the
      meantime, we've received quite a bit of feedback that it would be
      helpful to have these guidelines formally documented.
      
      Based on a suggestion from Matthew Wilcox, we also add a link to this
      file to Documentation/process/index.rst, to make this document easier
      to find.  The format of this document has also been changed to align
      to the format outlined in the maintainer entry profiles, in accordance
      with comments from Jon Corbet and Dan Williams.
      Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
      Reviewed-by: default avatarPalmer Dabbelt <palmerdabbelt@google.com>
      Cc: Palmer Dabbelt <palmer@dabbelt.com>
      Cc: Albert Ou <aou@eecs.berkeley.edu>
      Cc: Krste Asanovic <krste@berkeley.edu>
      Cc: Andrew Waterman <waterman@eecs.berkeley.edu>
      Cc: Matthew Wilcox <willy@infradead.org>
      Cc: Dan Williams <dan.j.williams@intel.com>
      Cc: Jonathan Corbet <corbet@lwn.net>
      0e194d9d
    • Paul Walmsley's avatar
      riscv: prefix IRQ_ macro names with an RV_ namespace · 2f3035da
      Paul Walmsley authored
      "IRQ_TIMER", used in the arch/riscv CSR header file, is a sufficiently
      generic macro name that it's used by several source files across the
      Linux code base.  Some of these other files ultimately include the
      arch/riscv CSR include file, causing collisions.  Fix by prefixing the
      RISC-V csr.h IRQ_ macro names with an RV_ prefix.
      
      Fixes: a4c3733d ("riscv: abstract out CSR names for supervisor vs machine mode")
      Reported-by: default avatarOlof Johansson <olof@lixom.net>
      Acked-by: default avatarOlof Johansson <olof@lixom.net>
      Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
      2f3035da
    • Zong Li's avatar
      clocksource: riscv: add notrace to riscv_sched_clock · 9d05c18e
      Zong Li authored
      When enabling ftrace graph tracer, it gets the tracing clock in
      ftrace_push_return_trace().  Eventually, it invokes riscv_sched_clock()
      to get the clock value.  If riscv_sched_clock() isn't marked with
      'notrace', it will call ftrace_push_return_trace() and cause infinite
      loop.
      
      The result of failure as follow:
      
      command: echo function_graph >current_tracer
      [   46.176787] Unable to handle kernel paging request at virtual address ffffffe04fb38c48
      [   46.177309] Oops [#1]
      [   46.177478] Modules linked in:
      [   46.177770] CPU: 0 PID: 256 Comm: $d Not tainted 5.5.0-rc1 #47
      [   46.177981] epc: ffffffe00035e59a ra : ffffffe00035e57e sp : ffffffe03a7569b0
      [   46.178216]  gp : ffffffe000d29b90 tp : ffffffe03a756180 t0 : ffffffe03a756968
      [   46.178430]  t1 : ffffffe00087f408 t2 : ffffffe03a7569a0 s0 : ffffffe03a7569f0
      [   46.178643]  s1 : ffffffe00087f408 a0 : 0000000ac054cda4 a1 : 000000000087f411
      [   46.178856]  a2 : 0000000ac054cda4 a3 : 0000000000373ca0 a4 : ffffffe04fb38c48
      [   46.179099]  a5 : 00000000153e22a8 a6 : 00000000005522ff a7 : 0000000000000005
      [   46.179338]  s2 : ffffffe03a756a90 s3 : ffffffe00032811c s4 : ffffffe03a756a58
      [   46.179570]  s5 : ffffffe000d29fe0 s6 : 0000000000000001 s7 : 0000000000000003
      [   46.179809]  s8 : 0000000000000003 s9 : 0000000000000002 s10: 0000000000000004
      [   46.180053]  s11: 0000000000000000 t3 : 0000003fc815749c t4 : 00000000000efc90
      [   46.180293]  t5 : ffffffe000d29658 t6 : 0000000000040000
      [   46.180482] status: 0000000000000100 badaddr: ffffffe04fb38c48 cause: 000000000000000f
      Signed-off-by: default avatarZong Li <zong.li@sifive.com>
      Reviewed-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
      [paul.walmsley@sifive.com: cleaned up patch description]
      Fixes: 92e0d143 ("clocksource/drivers/riscv_timer: Provide the sched_clock")
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
      9d05c18e
    • Linus Torvalds's avatar
      Merge branch 'akpm' (patches from Andrew) · 36487907
      Linus Torvalds authored
      Merge misc fixes from Andrew Morton:
       "17 fixes"
      
      * emailed patches from Andrew Morton <akpm@linux-foundation.org>:
        hexagon: define ioremap_uc
        ocfs2: fix the crash due to call ocfs2_get_dlm_debug once less
        ocfs2: call journal flush to mark journal as empty after journal recovery when mount
        mm/hugetlb: defer freeing of huge pages if in non-task context
        mm/gup: fix memory leak in __gup_benchmark_ioctl
        mm/oom: fix pgtables units mismatch in Killed process message
        fs/posix_acl.c: fix kernel-doc warnings
        hexagon: work around compiler crash
        hexagon: parenthesize registers in asm predicates
        fs/namespace.c: make to_mnt_ns() static
        fs/nsfs.c: include headers for missing declarations
        fs/direct-io.c: include fs/internal.h for missing prototype
        mm: move_pages: return valid node id in status if the page is already on the target node
        memcg: account security cred as well to kmemcg
        kcov: fix struct layout for kcov_remote_arg
        mm/zsmalloc.c: fix the migrated zspage statistics.
        mm/memory_hotplug: shrink zones when offlining memory
      36487907
    • Linus Torvalds's avatar
      Merge tag 'apparmor-pr-2020-01-04' of... · a125bcda
      Linus Torvalds authored
      Merge tag 'apparmor-pr-2020-01-04' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
      
      Pull apparmor fixes from John Johansen:
      
       - performance regression: only get a label reference if the fast path
         check fails
      
       - fix aa_xattrs_match() may sleep while holding a RCU lock
      
       - fix bind mounts aborting with -ENOMEM
      
      * tag 'apparmor-pr-2020-01-04' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor:
        apparmor: fix aa_xattrs_match() may sleep while holding a RCU lock
        apparmor: only get a label reference if the fast path check fails
        apparmor: fix bind mounts aborting with -ENOMEM
      a125bcda
  4. 04 Jan, 2020 21 commits
  5. 03 Jan, 2020 8 commits
    • Linus Torvalds's avatar
      Merge tag 'for-5.5-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux · 3a562aee
      Linus Torvalds authored
      Pull btrfs fixes from David Sterba:
       "A few fixes for btrfs:
      
         - blkcg accounting problem with compression that could stall writes
      
         - setting up blkcg bio for compression crashes due to NULL bdev
           pointer
      
         - fix possible infinite loop in writeback for nocow files (here
           possible means almost impossible, 13 things that need to happen to
           trigger it)"
      
      * tag 'for-5.5-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
        Btrfs: fix infinite loop during nocow writeback due to race
        btrfs: fix compressed write bio blkcg attribution
        btrfs: punt all bios created in btrfs_submit_compressed_write()
      3a562aee
    • Linus Torvalds's avatar
      Merge tag 'block-5.5-20200103' of git://git.kernel.dk/linux-block · b6b4aafc
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "Three fixes in here:
      
         - Fix for a missing split on default memory boundary mask (4G) (Ming)
      
         - Fix for multi-page read bio truncate (Ming)
      
         - Fix for null_blk zone close request handling (Damien)"
      
      * tag 'block-5.5-20200103' of git://git.kernel.dk/linux-block:
        null_blk: Fix REQ_OP_ZONE_CLOSE handling
        block: fix splitting segments on boundary masks
        block: add bio_truncate to fix guard_bio_eod
      b6b4aafc
    • Linus Torvalds's avatar
      Merge tag 'kbuild-fixes-v5.5-2' of... · bed72351
      Linus Torvalds authored
      Merge tag 'kbuild-fixes-v5.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
      
      Pull Kbuild fixes from Masahiro Yamada:
      
       - fix build error in usr/gen_initramfs_list.sh
      
       - fix libelf-dev dependency in deb-pkg build
      
      * tag 'kbuild-fixes-v5.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
        kbuild/deb-pkg: annotate libelf-dev dependency as :native
        gen_initramfs_list.sh: fix 'bad variable name' error
      bed72351
    • Linus Torvalds's avatar
      Merge tag 'for-linus-2020-01-03' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux · d9c82fd8
      Linus Torvalds authored
      Pull thread fixes from Christian Brauner:
       "Here are two fixes:
      
         - Panic earlier when global init exits to generate useable coredumps.
      
           Currently, when global init and all threads in its thread-group
           have exited we panic via:
      
             do_exit()
             -> exit_notify()
                -> forget_original_parent()
                   -> find_child_reaper()
      
           This makes it hard to extract a useable coredump for global init
           from a kernel crashdump because by the time we panic exit_mm() will
           have already released global init's mm. We now panic slightly
           earlier. This has been a problem in certain environments such as
           Android.
      
         - Fix a race in assigning and reading taskstats for thread-groups
           with more than one thread.
      
           This patch has been waiting for quite a while since people
           disagreed on what the correct fix was at first"
      
      * tag 'for-linus-2020-01-03' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
        exit: panic before exit_mm() on global init exit
        taskstats: fix data-race
      d9c82fd8
    • Linus Torvalds's avatar
      Merge tag 'powerpc-5.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · 6f2e9c3d
      Linus Torvalds authored
      Pull powerpc fixes from Michael Ellerman:
       "Two more powerpc fixes for 5.5:
      
         - One commit to fix a build error when CONFIG_JUMP_LABEL=n,
           introduced by our recent fix to is_shared_processor().
      
         - A commit marking some SLB related functions as notrace, as tracing
           them triggers warnings.
      
        Thanks to Jason A Donenfeld"
      
      * tag 'powerpc-5.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
        powerpc/spinlocks: Include correct header for static key
        powerpc/mm: Mark get_slice_psize() & slice_addr_is_low() as notrace
      6f2e9c3d
    • Linus Torvalds's avatar
      Merge tag 'sound-5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · e35d0165
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "Nothing to worry at this stage but all nice small changes:
      
         - A regression fix for AMD GPU detection in HD-audio
      
         - A long-standing sleep-in-atomic fix for an ice1724 device
      
         - Usual suspects, the device-specific quirks for HD- and USB-audio"
      
      * tag 'sound-5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda/realtek - Enable the bass speaker of ASUS UX431FLC
        ALSA: ice1724: Fix sleep-in-atomic in Infrasonic Quartet support code
        ALSA: hda/realtek - Add Bass Speaker and fixed dac for bass speaker
        ALSA: hda - Apply sync-write workaround to old Intel platforms, too
        ALSA: hda/hdmi - fix atpx_present when CLASS is not VGA
        ALSA: usb-audio: fix set_format altsetting sanity check
        ALSA: hda/realtek - Add headset Mic no shutup for ALC283
        ALSA: usb-audio: set the interface format after resume on Dell WD19
      e35d0165
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-2020-01-03' of git://anongit.freedesktop.org/drm/drm · ca78fdeb
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "New Years fixes! Mostly amdgpu with a light smattering of arm
        graphics, and two AGP warning fixes.
      
        Quiet as expected, hopefully we don't get a post holiday rush.
      
        agp:
         - two unused variable removed
      
        amdgpu:
         - ATPX regression fix
         - SMU metrics table locking fixes
         - gfxoff fix for raven
         - RLC firmware loading stability fix
      
        mediatek:
         - external display fix
         - dsi timing fix
      
        sun4i:
         - Fix double-free in connector/encoder cleanup (Stefan)
      
        maildp:
         - Make vtable static (Ben)"
      
      * tag 'drm-fixes-2020-01-03' of git://anongit.freedesktop.org/drm/drm:
        agp: remove unused variable arqsz in agp_3_5_enable()
        agp: remove unused variable mcapndx
        drm/amdgpu: correct RLC firmwares loading sequence
        drm/amdgpu: enable gfxoff for raven1 refresh
        drm/amdgpu/smu: add metrics table lock for vega20 (v2)
        drm/amdgpu/smu: add metrics table lock for navi (v2)
        drm/amdgpu/smu: add metrics table lock for arcturus (v2)
        drm/amdgpu/smu: add metrics table lock
        Revert "drm/amdgpu: simplify ATPX detection"
        drm/arm/mali: make malidp_mw_connector_helper_funcs static
        drm/sun4i: hdmi: Remove duplicate cleanup calls
        drm/mediatek: reduce the hbp and hfp for phy timing
        drm/mediatek: Fix can't get component for external display plane.
        drm/mediatek: Check return value of mtk_drm_ddp_comp_for_plane.
      ca78fdeb
    • Jan Stancek's avatar
      mm/hugetlbfs: fix for_each_hstate() loop in init_hugetlbfs_fs() · 15f0ec94
      Jan Stancek authored
      LTP memfd_create04 started failing for some huge page sizes
      after v5.4-10135-gc3bfc5dd.
      
      The problem is the check introduced to for_each_hstate() loop that
      should skip default_hstate_idx.  Since it doesn't update 'i' counter,
      all subsequent huge page sizes are skipped as well.
      
      Fixes: 8fc312b3 ("mm/hugetlbfs: fix error handling when setting up mounts")
      Signed-off-by: default avatarJan Stancek <jstancek@redhat.com>
      Reviewed-by: default avatarMike Kravetz <mike.kravetz@oracle.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      15f0ec94