linux-stable.git/drivers/video/fbdev/core/fbsysfs.c, branch linux-rolling-lts Linux kernel stable tree fbdev: fix use-after-free in store_modes() 2026-07-04T11:44:17+00:00 Ian Bridges icb@fastmail.org 2026-06-26T04:50:48+00:00 0d35f9f194a858567a21017d69318a51e3a822b9 commit 2c1c805c65fb7dc7524e20376d6987721e73a0b1 upstream. store_modes() replaces a framebuffer's modelist with modes from userspace. On success it frees the old modelist with fb_destroy_modelist(). Two fields still point into that freed list. One pointer is fb_display[i].mode, the mode a console is using. fbcon_new_modelist() moves these pointers to the new list. It only does so for consoles still mapped to the framebuffer. An unmapped console is skipped and keeps its stale pointer. Unbinding fbcon, for example, sets con2fb_map[i] to -1 but leaves fb_display[i].mode set. An FBIOPUT_VSCREENINFO ioctl with FB_ACTIVATE_INV_MODE later reaches fbcon_mode_deleted(). That function reads the stale fb_display[i].mode through fb_mode_is_equal(). The read is a use-after-free. The other pointer is fb_info->mode, the current mode. It is set through the mode sysfs attribute. store_modes() does not update fb_info->mode, so it is left pointing into the freed list. show_mode(), the attribute's read handler, dereferences the stale fb_info->mode through mode_string(). The read is a use-after-free. Clear both pointers before freeing the list. Commit a1f305893074 ("fbcon: Set fb_display[i]->mode to NULL when the mode is released") added the helper fbcon_delete_modelist(). It clears every fb_display[i].mode that points into a given list. So far it is called only from the unregister path. Call it from store_modes() too, and set fb_info->mode to NULL. Reported-by: syzbot+81c7c6b52649fd07299d@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=81c7c6b52649fd07299d Cc: stable@vger.kernel.org Link: https://lore.kernel.org/all/ajjoDhAi2y4ArSlz@dev/ Assisted-by: Claude:claude-opus-4-8 Signed-off-by: Ian Bridges <icb@fastmail.org> Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 2c1c805c65fb7dc7524e20376d6987721e73a0b1 upstream.

store_modes() replaces a framebuffer's modelist with modes from userspace.
On success it frees the old modelist with fb_destroy_modelist(). Two
fields still point into that freed list.

One pointer is fb_display[i].mode, the mode a console is using.
fbcon_new_modelist() moves these pointers to the new list. It only does so
for consoles still mapped to the framebuffer. An unmapped console is
skipped and keeps its stale pointer. Unbinding fbcon, for example, sets
con2fb_map[i] to -1 but leaves fb_display[i].mode set. An
FBIOPUT_VSCREENINFO ioctl with FB_ACTIVATE_INV_MODE later reaches
fbcon_mode_deleted(). That function reads the stale fb_display[i].mode
through fb_mode_is_equal(). The read is a use-after-free.

The other pointer is fb_info->mode, the current mode. It is set through
the mode sysfs attribute. store_modes() does not update fb_info->mode, so
it is left pointing into the freed list. show_mode(), the attribute's read
handler, dereferences the stale fb_info->mode through mode_string(). The
read is a use-after-free.

Clear both pointers before freeing the list. Commit a1f305893074 ("fbcon:
Set fb_display[i]->mode to NULL when the mode is released") added the
helper fbcon_delete_modelist(). It clears every fb_display[i].mode that
points into a given list. So far it is called only from the unregister
path. Call it from store_modes() too, and set fb_info->mode to NULL.

Reported-by: syzbot+81c7c6b52649fd07299d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=81c7c6b52649fd07299d
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/ajjoDhAi2y4ArSlz@dev/
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Ian Bridges <icb@fastmail.org>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fbdev: Use device_create_with_groups() to fix sysfs groups registration race 2026-03-04T12:21:31+00:00 Hans de Goede johannes.goede@oss.qualcomm.com 2025-12-21T16:57:40+00:00 0a08a7fa123c0c53d391833ad1c0757ee89d4ad2 [ Upstream commit 68eeb0871e986ae5462439dae881e3a27bcef85f ] The fbdev sysfs attributes are registered after sending the uevent for the device creation, leaving a race window where e.g. udev rules may not be able to access the sysfs attributes because the registration is not done yet. Fix this by switching to device_create_with_groups(). This also results in a nice cleanup. After switching to device_create_with_groups() all that is left of fb_init_device() is setting the drvdata and that can be passed to device_create[_with_groups]() too. After which fb_init_device() can be completely removed. Dropping fb_init_device() + fb_cleanup_device() in turn allows removing fb_info.class_flag as they were the only user of this field. Fixes: 5fc830d6aca1 ("fbdev: Register sysfs groups through device_add_group") Cc: stable@vger.kernel.org Cc: Shixiong Ou <oushixiong@kylinos.cn> Signed-off-by: Hans de Goede <johannes.goede@oss.qualcomm.com> Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 68eeb0871e986ae5462439dae881e3a27bcef85f ]

The fbdev sysfs attributes are registered after sending the uevent for
the device creation, leaving a race window where e.g. udev rules may
not be able to access the sysfs attributes because the registration is
not done yet.

Fix this by switching to device_create_with_groups(). This also results in
a nice cleanup. After switching to device_create_with_groups() all that
is left of fb_init_device() is setting the drvdata and that can be passed
to device_create[_with_groups]() too. After which fb_init_device() can
be completely removed.

Dropping fb_init_device() + fb_cleanup_device() in turn allows removing
fb_info.class_flag as they were the only user of this field.

Fixes: 5fc830d6aca1 ("fbdev: Register sysfs groups through device_add_group")
Cc: stable@vger.kernel.org
Cc: Shixiong Ou <oushixiong@kylinos.cn>
Signed-off-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fbdev: Track display blanking state 2025-04-10T09:38:57+00:00 Thomas Zimmermann tzimmermann@suse.de 2025-03-21T09:53:55+00:00 7e3711eb87c584ed224a7ad7000eba36e6fa3a51 Store the display's blank status in struct fb_info.blank and track it in fb_blank(). As an extra, the status is now available from the sysfs blank attribute. Support for blanking is optional. Therefore framebuffer_alloc() initializes the state to FB_BLANK_UNBLANK (i.e., the display is on). If the fb_blank callback has been set, register_framebuffer() sets the state to FB_BLANK_POWERDOWN. On the first modeset, the call to fb_blank() will update it to _UNBLANK. This is important, as listeners to FB_EVENT_BLANK will now see the display being switched on. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Simona Vetter <simona.vetter@ffwll.ch> Link: https://lore.kernel.org/r/20250321095517.313713-3-tzimmermann@suse.de Signed-off-by: Lee Jones <lee@kernel.org> 
Store the display's blank status in struct fb_info.blank and track
it in fb_blank(). As an extra, the status is now available from the
sysfs blank attribute.

Support for blanking is optional. Therefore framebuffer_alloc()
initializes the state to FB_BLANK_UNBLANK (i.e., the display is
on). If the fb_blank callback has been set, register_framebuffer()
sets the state to FB_BLANK_POWERDOWN. On the first modeset, the
call to fb_blank() will update it to _UNBLANK. This is important,
as listeners to FB_EVENT_BLANK will now see the display being
switched on.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Simona Vetter <simona.vetter@ffwll.ch>
Link: https://lore.kernel.org/r/20250321095517.313713-3-tzimmermann@suse.de
Signed-off-by: Lee Jones <lee@kernel.org>
fbdev: Register sysfs groups through device_add_group 2025-03-26T21:39:20+00:00 Shixiong Ou oushixiong@kylinos.cn 2025-02-20T09:59:35+00:00 5fc830d6aca18a27a83906c8c916d545a0235ed5 Use device_add_group() to simplify creation. Signed-off-by: Shixiong Ou <oushixiong@kylinos.cn> Signed-off-by: Helge Deller <deller@gmx.de> 
Use device_add_group() to simplify creation.

Signed-off-by: Shixiong Ou <oushixiong@kylinos.cn>
Signed-off-by: Helge Deller <deller@gmx.de>
fbdev/core: Use list_for_each_entry() helper 2023-08-31T20:54:34+00:00 Jinjie Ruan ruanjinjie@huawei.com 2023-08-23T07:21:49+00:00 1520081a785a7d1609541b53a3d0f6494f829cc2 Convert list_for_each() to list_for_each_entry() so that the pos list_head pointer and list_entry() call are no longer needed, which can reduce a few lines of code. No functional changed. Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com> Signed-off-by: Helge Deller <deller@gmx.de> 
Convert list_for_each() to list_for_each_entry() so that the pos
list_head pointer and list_entry() call are no longer needed, which
can reduce a few lines of code. No functional changed.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Signed-off-by: Helge Deller <deller@gmx.de>
fbdev/core: Add fb_device_{create,destroy}() 2023-06-27T07:58:51+00:00 Thomas Zimmermann tzimmermann@suse.de 2023-06-13T11:07:09+00:00 e2af003210c6395f32a5ba9a032ff9589ee7bb09 Move the logic to create and destroy fbdev devices into the new helpers fb_device_create() and fb_device_destroy(). There was a call to fb_cleanup_device() in do_unregister_framebuffer() that was too late. The device had already been removed at this point. Move the call into fb_device_destroy(). Declare the helpers in the new internal header file fb_internal.h, as they are only used within the fbdev core module. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-35-tzimmermann@suse.de 
Move the logic to create and destroy fbdev devices into the new
helpers fb_device_create() and fb_device_destroy().

There was a call to fb_cleanup_device() in do_unregister_framebuffer()
that was too late. The device had already been removed at this point.
Move the call into fb_device_destroy().

Declare the helpers in the new internal header file  fb_internal.h, as
they are only used within the fbdev core module.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-35-tzimmermann@suse.de
fbdev/core: Move framebuffer and backlight helpers into separate files 2023-06-27T07:58:51+00:00 Thomas Zimmermann tzimmermann@suse.de 2023-06-13T11:07:08+00:00 f0f6839be41d71a367611284412949f1d3c8baea Move framebuffer and backlight helpers into separate files. Leave fbsysfs.c to sysfs-related code. No functional changes. The framebuffer helpers are not in fbmem.c because they are under GPL-2.0-or-later copyright, while fbmem.c is GPL-2.0. v2: * include <linux/mutex.h> (Sam) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-34-tzimmermann@suse.de 
Move framebuffer and backlight helpers into separate files. Leave
fbsysfs.c to sysfs-related code. No functional changes.

The framebuffer helpers are not in fbmem.c because they are under
GPL-2.0-or-later copyright, while fbmem.c is GPL-2.0.

v2:
	* include <linux/mutex.h> (Sam)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230613110953.24176-34-tzimmermann@suse.de
drm/fbdev: Remove aperture handling and FBINFO_MISC_FIRMWARE 2023-01-13T11:54:35+00:00 Thomas Zimmermann tzimmermann@suse.de 2022-12-19T16:05:16+00:00 5b6373de4351debd9fa87f1c46442b2c28d8b18e There are no users left of struct fb_info.apertures and the flag FBINFO_MISC_FIRMWARE. Remove both and the aperture-ownership code in the fbdev core. All code for aperture ownership is now located in the fbdev drivers. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221219160516.23436-19-tzimmermann@suse.de 
There are no users left of struct fb_info.apertures and the flag
FBINFO_MISC_FIRMWARE. Remove both and the aperture-ownership code
in the fbdev core. All code for aperture ownership is now located
in the fbdev drivers.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221219160516.23436-19-tzimmermann@suse.de
fbdev: fbcon: Destroy mutex on freeing struct fb_info 2022-08-24T19:47:08+00:00 Shigeru Yoshida syoshida@redhat.com 2022-08-21T11:17:31+00:00 58559dfc1ebba2ae0c7627dc8f8991ae1984c6e3 It's needed to destroy bl_curve_mutex on freeing struct fb_info since the mutex is embedded in the structure and initialized when it's allocated. Signed-off-by: Shigeru Yoshida <syoshida@redhat.com> Signed-off-by: Helge Deller <deller@gmx.de> 
It's needed to destroy bl_curve_mutex on freeing struct fb_info since
the mutex is embedded in the structure and initialized when it's
allocated.

Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Merge tag 'drm-next-2022-05-25' of git://anongit.freedesktop.org/drm/drm 2022-05-25T23:18:27+00:00 Linus Torvalds torvalds@linux-foundation.org 2022-05-25T23:18:27+00:00 2518f226c60d8e04d18ba4295500a5b0b8ac7659 Pull drm updates from Dave Airlie: "Intel have enabled DG2 on certain SKUs for laptops, AMD has started some new GPU support, msm has user allocated VA controls dma-buf: - add dma_resv_replace_fences - add dma_resv_get_singleton - make dma_excl_fence private core: - EDID parser refactorings - switch drivers to drm_mode_copy/duplicate - DRM managed mutex initialization display-helper: - put HDMI, SCDC, HDCP, DSC and DP into new module gem: - rework fence handling ttm: - rework bulk move handling - add common debugfs for resource managers - convert to kvcalloc format helpers: - support monochrome formats - RGB888, RGB565 to XRGB8888 conversions fbdev: - cfb/sys_imageblit fixes - pagelist corruption fix - create offb platform device - deferred io improvements sysfb: - Kconfig rework - support for VESA mode selection bridge: - conversions to devm_drm_of_get_bridge - conversions to panel_bridge - analogix_dp - autosuspend support - it66121 - audio support - tc358767 - DSI to DPI support - icn6211 - PLL/I2C fixes, DT property - adv7611 - enable DRM_BRIDGE_OP_HPD - anx7625 - fill ELD if no monitor - dw_hdmi - add audio support - lontium LT9211 support, i.MXMP LDB - it6505: Kconfig fix, DPCD set power fix - adv7511 - CEC support for ADV7535 panel: - ltk035c5444t, B133UAN01, NV3052C panel support - DataImage FG040346DSSWBG04 support - st7735r - DT bindings fix - ssd130x - fixes i915: - DG2 laptop PCI-IDs ("motherboard down") - Initial RPL-P PCI IDs - compute engine ABI - DG2 Tile4 support - DG2 CCS clear color compression support - DG2 render/media compression formats support - ATS-M platform info - RPL-S PCI IDs added - Bump ADL-P DMC version to v2.16 - Support static DRRS - Support multiple eDP/LVDS native mode refresh rates - DP HDR support for HSW+ - Lots of display refactoring + fixes - GuC hwconfig support and query - sysfs support for multi-tile - fdinfo per-client gpu utilisation - add geometry subslices query - fix prime mmap with LMEM - fix vm open count and remove vma refcounts - contiguous allocation fixes - steered register write support - small PCI BAR enablement - GuC error capture support - sunset igpu legacy mmap support for newer devices - GuC version 70.1.1 support amdgpu: - Initial SoC21 support - SMU 13.x enablement - SMU 13.0.4 support - ttm_eu cleanups - USB-C, GPUVM updates - TMZ fixes for RV - RAS support for VCN - PM sysfs code cleanup - DC FP rework - extend CG/PG flags to 64-bit - SI dpm lockdep fix - runtime PM fixes amdkfd: - RAS/SVM fixes - TLB flush fixes - CRIU GWS support - ignore bogus MEC signals more efficiently msm: - Fourcc modifier for tiled but not compressed layouts - Support for userspace allocated IOVA (GPU virtual address) - DPU: DSC (Display Stream Compression) support - DP: eDP support - DP: conversion to use drm_bridge and drm_bridge_connector - Merge DPU1 and MDP5 MDSS driver - DPU: writeback support nouveau: - make some structures static - make some variables static - switch to drm_gem_plane_helper_prepare_fb radeon: - misc fixes/cleanups mxsfb: - rework crtc mode setting - LCDIF CRC support etnaviv: - fencing improvements - fix address space collisions - cleanup MMU reference handling gma500: - GEM/GTT improvements - connector handling fixes komeda: - switch to plane reset helper mediatek: - MIPI DSI improvements omapdrm: - GEM improvements qxl: - aarch64 support vc4: - add a CL submission tracepoint - HDMI YUV support - HDMI/clock improvements - drop is_hdmi caching virtio: - remove restriction of non-zero blob types vmwgfx: - support for cursormob and cursorbypass 4 - fence improvements tidss: - reset DISPC on startup solomon: - SPI support - DT improvements sun4i: - allwinner D1 support - drop is_hdmi caching imx: - use swap() instead of open-coding - use devm_platform_ioremap_resource - remove redunant initializations ast: - Displayport support rockchip: - Refactor IOMMU initialisation - make some structures static - replace drm_detect_hdmi_monitor with drm_display_info.is_hdmi - support swapped YUV formats, - clock improvements - rk3568 support - VOP2 support mediatek: - MT8186 support tegra: - debugabillity improvements" * tag 'drm-next-2022-05-25' of git://anongit.freedesktop.org/drm/drm: (1740 commits) drm/i915/dsi: fix VBT send packet port selection for ICL+ drm/i915/uc: Fix undefined behavior due to shift overflowing the constant drm/i915/reg: fix undefined behavior due to shift overflowing the constant drm/i915/gt: Fix use of static in macro mismatch drm/i915/audio: fix audio code enable/disable pipe logging drm/i915: Fix CFI violation with show_dynamic_id() drm/i915: Fix 'mixing different enum types' warnings in intel_display_power.c drm/i915/gt: Fix build error without CONFIG_PM drm/msm/dpu: handle pm_runtime_get_sync() errors in bind path drm/msm/dpu: add DRM_MODE_ROTATE_180 back to supported rotations drm/msm: don't free the IRQ if it was not requested drm/msm/dpu: limit writeback modes according to max_linewidth drm/amd: Don't reset dGPUs if the system is going to s2idle drm/amdgpu: Unmap legacy queue when MES is enabled drm: msm: fix possible memory leak in mdp5_crtc_cursor_set() drm/msm: Fix fb plane offset calculation drm/msm/a6xx: Fix refcount leak in a6xx_gpu_init drm/msm/dsi: don't powerup at modeset time for parade-ps8640 drm/rockchip: Change register space names in vop2 dt-bindings: display: rockchip: make reg-names mandatory for VOP2 ... 
Pull drm updates from Dave Airlie:
 "Intel have enabled DG2 on certain SKUs for laptops, AMD has started
  some new GPU support, msm has user allocated VA controls

  dma-buf:
   - add dma_resv_replace_fences
   - add dma_resv_get_singleton
   - make dma_excl_fence private

  core:
   - EDID parser refactorings
   - switch drivers to drm_mode_copy/duplicate
   - DRM managed mutex initialization

  display-helper:
   - put HDMI, SCDC, HDCP, DSC and DP into new module

  gem:
   - rework fence handling

  ttm:
   - rework bulk move handling
   - add common debugfs for resource managers
   - convert to kvcalloc

  format helpers:
   - support monochrome formats
   - RGB888, RGB565 to XRGB8888 conversions

  fbdev:
   - cfb/sys_imageblit fixes
   - pagelist corruption fix
   - create offb platform device
   - deferred io improvements

  sysfb:
   - Kconfig rework
   - support for VESA mode selection

  bridge:
   - conversions to devm_drm_of_get_bridge
   - conversions to panel_bridge
   - analogix_dp - autosuspend support
   - it66121 - audio support
   - tc358767 - DSI to DPI support
   - icn6211 - PLL/I2C fixes, DT property
   - adv7611 - enable DRM_BRIDGE_OP_HPD
   - anx7625 - fill ELD if no monitor
   - dw_hdmi - add audio support
   - lontium LT9211 support, i.MXMP LDB
   - it6505: Kconfig fix, DPCD set power fix
   - adv7511 - CEC support for ADV7535

  panel:
   - ltk035c5444t, B133UAN01, NV3052C panel support
   - DataImage FG040346DSSWBG04 support
   - st7735r - DT bindings fix
   - ssd130x - fixes

  i915:
   - DG2 laptop PCI-IDs ("motherboard down")
   - Initial RPL-P PCI IDs
   - compute engine ABI
   - DG2 Tile4 support
   - DG2 CCS clear color compression support
   - DG2 render/media compression formats support
   - ATS-M platform info
   - RPL-S PCI IDs added
   - Bump ADL-P DMC version to v2.16
   - Support static DRRS
   - Support multiple eDP/LVDS native mode refresh rates
   - DP HDR support for HSW+
   - Lots of display refactoring + fixes
   - GuC hwconfig support and query
   - sysfs support for multi-tile
   - fdinfo per-client gpu utilisation
   - add geometry subslices query
   - fix prime mmap with LMEM
   - fix vm open count and remove vma refcounts
   - contiguous allocation fixes
   - steered register write support
   - small PCI BAR enablement
   - GuC error capture support
   - sunset igpu legacy mmap support for newer devices
   - GuC version 70.1.1 support

  amdgpu:
   - Initial SoC21 support
   - SMU 13.x enablement
   - SMU 13.0.4 support
   - ttm_eu cleanups
   - USB-C, GPUVM updates
   - TMZ fixes for RV
   - RAS support for VCN
   - PM sysfs code cleanup
   - DC FP rework
   - extend CG/PG flags to 64-bit
   - SI dpm lockdep fix
   - runtime PM fixes

  amdkfd:
   - RAS/SVM fixes
   - TLB flush fixes
   - CRIU GWS support
   - ignore bogus MEC signals more efficiently

  msm:
   - Fourcc modifier for tiled but not compressed layouts
   - Support for userspace allocated IOVA (GPU virtual address)
   - DPU: DSC (Display Stream Compression) support
   - DP: eDP support
   - DP: conversion to use drm_bridge and drm_bridge_connector
   - Merge DPU1 and MDP5 MDSS driver
   - DPU: writeback support

  nouveau:
   - make some structures static
   - make some variables static
   - switch to drm_gem_plane_helper_prepare_fb

  radeon:
   - misc fixes/cleanups

  mxsfb:
   - rework crtc mode setting
   - LCDIF CRC support

  etnaviv:
   - fencing improvements
   - fix address space collisions
   - cleanup MMU reference handling

  gma500:
   - GEM/GTT improvements
   - connector handling fixes

  komeda:
   - switch to plane reset helper

  mediatek:
   - MIPI DSI improvements

  omapdrm:
   - GEM improvements

  qxl:
   - aarch64 support

  vc4:
   - add a CL submission tracepoint
   - HDMI YUV support
   - HDMI/clock improvements
   - drop is_hdmi caching

  virtio:
   - remove restriction of non-zero blob types

  vmwgfx:
   - support for cursormob and cursorbypass 4
   - fence improvements

  tidss:
   - reset DISPC on startup

  solomon:
   - SPI support
   - DT improvements

  sun4i:
   - allwinner D1 support
   - drop is_hdmi caching

  imx:
   - use swap() instead of open-coding
   - use devm_platform_ioremap_resource
   - remove redunant initializations

  ast:
   - Displayport support

  rockchip:
   - Refactor IOMMU initialisation
   - make some structures static
   - replace drm_detect_hdmi_monitor with drm_display_info.is_hdmi
   - support swapped YUV formats,
   - clock improvements
   - rk3568 support
   - VOP2 support

  mediatek:
   - MT8186 support

  tegra:
   - debugabillity improvements"

* tag 'drm-next-2022-05-25' of git://anongit.freedesktop.org/drm/drm: (1740 commits)
  drm/i915/dsi: fix VBT send packet port selection for ICL+
  drm/i915/uc: Fix undefined behavior due to shift overflowing the constant
  drm/i915/reg: fix undefined behavior due to shift overflowing the constant
  drm/i915/gt: Fix use of static in macro mismatch
  drm/i915/audio: fix audio code enable/disable pipe logging
  drm/i915: Fix CFI violation with show_dynamic_id()
  drm/i915: Fix 'mixing different enum types' warnings in intel_display_power.c
  drm/i915/gt: Fix build error without CONFIG_PM
  drm/msm/dpu: handle pm_runtime_get_sync() errors in bind path
  drm/msm/dpu: add DRM_MODE_ROTATE_180 back to supported rotations
  drm/msm: don't free the IRQ if it was not requested
  drm/msm/dpu: limit writeback modes according to max_linewidth
  drm/amd: Don't reset dGPUs if the system is going to s2idle
  drm/amdgpu: Unmap legacy queue when MES is enabled
  drm: msm: fix possible memory leak in mdp5_crtc_cursor_set()
  drm/msm: Fix fb plane offset calculation
  drm/msm/a6xx: Fix refcount leak in a6xx_gpu_init
  drm/msm/dsi: don't powerup at modeset time for parade-ps8640
  drm/rockchip: Change register space names in vop2
  dt-bindings: display: rockchip: make reg-names mandatory for VOP2
  ...