1. Nov 15, 2022
    • Benjamin Tissoires's avatar
      HID: initial BPF implementation · f5c27da4
      Benjamin Tissoires authored
      
      
      Declare an entry point that can use fmod_ret BPF programs, and
      also an API to access and change the incoming data.
      
      A simpler implementation would consist in just calling
      hid_bpf_device_event() for any incoming event and let users deal
      with the fact that they will be called for any event of any device.
      
      The goal of HID-BPF is to partially replace drivers, so this situation
      can be problematic because we might have programs which will step on
      each other toes.
      
      For that, we add a new API hid_bpf_attach_prog() that can be called
      from a syscall and we manually deal with a jump table in hid-bpf.
      
      Whenever we add a program to the jump table (in other words, when we
      attach a program to a HID device), we keep the number of time we added
      this program in the jump table so we can release it whenever there are
      no other users.
      
      HID devices have an RCU protected list of available programs in the
      jump table, and those programs are called one after the other thanks
      to bpf_tail_call().
      
      To achieve the detection of users losing their fds on the programs we
      attached, we add 2 tracing facilities on bpf_prog_release() (for when
      a fd is closed) and bpf_free_inode() (for when a pinned program gets
      unpinned).
      
      Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
      f5c27da4
    • Benjamin Tissoires's avatar
      HID: Kconfig: split HID support and hid-core compilation · 25621bcc
      Benjamin Tissoires authored
      
      
      Currently, we step into drivers/hid/ based on the value of
      CONFIG_HID.
      
      However, that value is a tristate, meaning that it can be a module.
      
      As per the documentation, if we jump into the subdirectory by
      following an obj-m, we can not compile anything inside that
      subdirectory in vmlinux. It is considered as a bug.
      
      To make things more friendly to HID-BPF, split HID (the HID core
      parameter) from HID_SUPPORT (do we want any kind of HID support in the
      system?), and make this new config a boolean.
      
      Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
      25621bcc
  2. Nov 12, 2022
    • Linus Torvalds's avatar
      Merge tag 'for-linus-2022111101' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid · 9c730fe1
      Linus Torvalds authored
      Pull HID fixes from Jiri Kosina:
      
       - fix for memory leak (on error path) in Hyper-V driver (Yang
         Yingliang)
      
       - regression fix for handling 3rd barrel switch emulation in Wacom
         driver (Jason Gerecke)
      
      * tag 'for-linus-2022111101' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
        HID: wacom: Fix logic used for 3rd barrel switch emulation
        HID: hyperv: fix possible memory leak in mousevsc_probe()
        HID: asus: Remove unused variable in asus_report_tool_width()
      9c730fe1
    • Linus Torvalds's avatar
      Merge tag 'sound-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 64b4aef1
      Linus Torvalds authored
      Pull sound fixes from Takashi Iwai:
       "Things look calming down, as this contains only a few small fixes:
      
         - Fix for a corner-case bug with SG-buffer page allocation helper
      
         - A regression fix for Roland USB-audio device probe
      
         - A potential memory leak fix at the error path
      
         - Handful quirks and device-specific fixes for HD- and USB-audio"
      
      * tag 'sound-6.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
        ALSA: hda: fix potential memleak in 'add_widget_node'
        ALSA: memalloc: Don't fall back for SG-buffer with IOMMU
        ALSA: usb-audio: add quirk to fix Hamedal C20 disconnect issue
        ALSA: hda/realtek: Add Positivo C6300 model quirk
        ALSA: usb-audio: Add DSD support for Accuphase DAC-60
        ALSA: usb-audio: Add quirk entry for M-Audio Micro
        ALSA: hda/hdmi - enable runtime pm for more AMD display audio
        ALSA: usb-audio: Remove redundant workaround for Roland quirk
        ALSA: usb-audio: Yet more regression for for the delayed card registration
        ALSA: hda/ca0132: add quirk for EVGA Z390 DARK
        ALSA: hda: clarify comments on SCF changes
        ALSA: arm: pxa: pxa2xx-ac97-lib: fix return value check of platform_get_irq()
        ALSA: hda/realtek: Add quirk for ASUS Zenbook using CS35L41
      64b4aef1
    • Linus Torvalds's avatar
      Merge tag 'drm-fixes-2022-11-11' of git://anongit.freedesktop.org/drm/drm · fd979ca6
      Linus Torvalds authored
      Pull drm fixes from Dave Airlie:
       "Weekly pull request for graphics, mostly amdgpu and i915, with a
        couple of fixes for vc4 and panfrost, panel quirks and a kconfig
        change for rcar-du. Nothing seems to be too strange at this stage.
      
        amdgpu:
         - Fix s/r in amdgpu_vram_mgr_new
         - SMU 13.0.4 update
         - GPUVM TLB race fix
         - DCN 3.1.4 fixes
         - DCN 3.2.x fixes
         - Vega10 fan fix
         - BACO fix for Beige Goby board
         - PSR fix
         - GPU VM PT locking fixes
      
        amdkfd:
         - CRIU fixes
      
        vc4:
         - HDMI fixes to vc4.
      
        panfrost:
         - Make panfrost's uapi header compile with C++.
         - Handle 1 gb boundary correctly in panfrost mmu code.
      
        panel:
         - Add rotation quirks for 2 panels.
      
        rcar-du:
         - DSI Kconfig fix
      
        i915:
         - Fix sg_table handling in map_dma_buf
         - Send PSR update also on invalidate
         - Do not set cache_dirty for DGFX
         - Restore userptr probe_range behaviour"
      
      * tag 'drm-fixes-2022-11-11' of git://anongit.freedesktop.org/drm/drm: (29 commits)
        drm/amd/display: only fill dirty rectangles when PSR is enabled
        drm/amdgpu: disable BACO on special BEIGE_GOBY card
        drm/amdgpu: Drop eviction lock when allocating PT BO
        drm/amdgpu: Unlock bo_list_mutex after error handling
        Revert "drm/amdgpu: Revert "drm/amdgpu: getting fan speed pwm for vega10 properly""
        drm/amd/display: Enforce minimum prefetch time for low memclk on DCN32
        drm/amd/display: Fix gpio port mapping issue
        drm/amd/display: Fix reg timeout in enc314_enable_fifo
        drm/amd/display: Fix FCLK deviation and tool compile issues
        drm/amd/display: Zeromem mypipe heap struct before using it
        drm/amd/display: Update SR watermarks for DCN314
        drm/amdgpu: workaround for TLB seq race
        drm/amdkfd: Fix error handling in criu_checkpoint
        drm/amdkfd: Fix error handling in kfd_criu_restore_events
        drm/amd/pm: update SMU IP v13.0.4 msg interface header
        drm: rcar-du: Fix Kconfig dependency between RCAR_DU and RCAR_MIPI_DSI
        drm/panfrost: Split io-pgtable requests properly
        drm/amdgpu: Fix the lpfn checking condition in drm buddy
        drm: panel-orientation-quirks: Add quirk for Acer Switch V 10 (SW5-017)
        drm: panel-orientation-quirks: Add quirk for Nanote UMPC-01
        ...
      fd979ca6
  3. Nov 11, 2022
  4. Nov 10, 2022