linux-stable.git/include/drm, branch v7.0.10

drm/ttm: Fix ttm_bo_swapout() infinite LRU walk on swapout failure

2026-05-23T11:09:39+00:00

commit b2ed01e7ad3de80333e9b962a44024b094bc0b2b upstream.

When ttm_tt_swapout() fails, the current code calls
ttm_resource_add_bulk_move() followed by ttm_resource_move_to_lru_tail()
to restore the resource's bulk_move membership.

However, ttm_resource_move_to_lru_tail() places the resource at the tail
of the LRU list which, relative to the walk cursor's hitch node (placed
immediately after the resource when it was yielded), puts the resource
*in front of the* the hitch. The next list_for_each_entry_continue() from
the hitch finds the same resource again, causing an infinite loop.

Fix by deferring del_bulk_move to the success path only.

On the success path, TTM_TT_FLAG_SWAPPED has just been set by
ttm_tt_swapout() but the resource is still tracked in the bulk_move range,
so ttm_resource_del_bulk_move()'s !ttm_resource_unevictable() guard would
incorrectly skip the removal. Introduce
ttm_resource_del_bulk_move_unevictable() which bypasses that guard.

Reported-by: Jatin Kataria 
Fixes: fc5d96670eb2 ("drm/ttm: Move swapped objects off the manager's LRU list")
Cc: Christian König 
Cc: Matthew Brost 
Cc: 
Cc:  # v6.13+
Assisted-by: GitHub_Copilot:claude-sonnet-4.6
Signed-off-by: Thomas Hellström 
Reviewed-by: Christian König 
Tested-by: Boqun Feng 
Link: https://patch.msgid.link/20260428094442.16985-1-thomas.hellstrom@linux.intel.com
Signed-off-by: Greg Kroah-Hartman

drm/dp: Add definition for Panel Replay full-line granularity

2026-03-04T13:26:08+00:00

DP specification is saying value 0xff 0xff in PANEL REPLAY SELECTIVE UPDATE
X GRANULARITY CAPABILITY registers (0xb2 and 0xb3) means full-line
granularity. Add definition for this.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Jouni Högander 
Reviewed-by: Uma Shankar 
Acked-by: Maarten Lankhorst 
Link: https://patch.msgid.link/20260225074221.1744330-1-jouni.hogander@intel.com
(cherry picked from commit b93311673263bb98a200ab1cb6304f969bdada5c)
Signed-off-by: Joonas Lahtinen

drm/pagemap: pass pagemap_addr by reference

2026-02-18T00:39:44+00:00

Passing a structure by value into a function is sometimes problematic,
for a number of reasons. Of of these is a warning from the 32-bit arm
compiler:

drivers/gpu/drm/drm_gpusvm.c: In function '__drm_gpusvm_unmap_pages':
drivers/gpu/drm/drm_gpusvm.c:1152:33: note: parameter passing for argument of type 'struct drm_pagemap_addr' changed in GCC 9.1
 1152 |                                 dpagemap->ops->device_unmap(dpagemap,
      |                                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1153 |                                                             dev, *addr);
      |                                                             ~~~~~~~~~~~

This particular problem is harmless since we are not mixing compiler versions
inside of the compiler. However, passing this by reference avoids the warning
along with providing slightly better calling conventions as it avoids an
extra copy on the stack.

Fixes: 75af93b3f5d0 ("drm/pagemap, drm/xe: Support destination migration over interconnect")
Fixes: 2df55d9e66a2 ("drm/xe: Support pcie p2p dma as a fast interconnect")
Signed-off-by: Arnd Bergmann 
Reviewed-by: Thomas Hellström 
Signed-off-by: Thomas Hellström 
Link: https://patch.msgid.link/20260216134644.1025365-1-arnd@kernel.org
Acked-by: Maarten Lankhorst 
(cherry picked from commit 95162db0208aee122d10ac1342fe97a1721cd258)
Signed-off-by: Rodrigo Vivi

BackMerge tag 'v6.19-rc7' into drm-next

2026-01-28T02:44:28+00:00

Linux 6.19-rc7

This is needed for msm and rust trees.

Signed-off-by: Dave Airlie

Merge tag 'drm-misc-next-2026-01-22' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

2026-01-23T02:45:15+00:00

drm-misc-next for 6.20:

Core Changes:
 - buddy: Fix free_trees memory leak, prevent a BUG_ON
 - dma-buf: Start to introduce cgroup memory accounting in heaps, Remove
   sysfs stats, add new tracepoints
 - hdmi: Limit infoframes exposure to userspace based on driver
   capabilities
 - property: Account for property blobs in memcg

Driver Changes:
 - atmel-hlcdc: Switch to drmm resources, Support nomodeset parameter,
   various patches to use newish helpers and fix memory safety bugs
 - hisilicon: Fix various DisplayPort related bugs
 - imagination: Introduce hardware version checks
 - renesas: Fix kernel panic on reboot
 - rockchip: Fix RK3576 HPD interrupt handling, Improve RK3588 HPD
   interrupt handling
 - v3d: Convert to drm logging helpers

 - bridge:
   - Continuation of the refcounting effort
   - new bridge: Algoltek AG6311

 - panel:
   - new panel: Anbernic RG-DS

Signed-off-by: Dave Airlie 

From: Maxime Ripard 
Link: https://patch.msgid.link/20260122-antique-sexy-junglefowl-1bc5a8@houat

drm, drm/xe: Fix xe userptr in the absence of CONFIG_DEVICE_PRIVATE

2026-01-22T09:41:18+00:00

CONFIG_DEVICE_PRIVATE is not selected by default by some distros,
for example Fedora, and that leads to a regression in the xe driver
since userptr support gets compiled out.

It turns out that DRM_GPUSVM, which is needed for xe userptr support
compiles also without CONFIG_DEVICE_PRIVATE, but doesn't compile
without CONFIG_ZONE_DEVICE.
Exclude the drm_pagemap files from compilation with !CONFIG_ZONE_DEVICE,
and remove the CONFIG_DEVICE_PRIVATE dependency from CONFIG_DRM_GPUSVM and
the xe driver's selection of it, re-enabling xe userptr for those configs.

v2:
- Don't compile the drm_pagemap files unless CONFIG_ZONE_DEVICE is set.
- Adjust the drm_pagemap.h header accordingly.

Fixes: 9e9787414882 ("drm/xe/userptr: replace xe_hmm with gpusvm")
Cc: Matthew Auld 
Cc: Himal Prasad Ghimiray 
Cc: Thomas Hellström 
Cc: Matthew Brost 
Cc: "Thomas Hellström" 
Cc: Rodrigo Vivi 
Cc: dri-devel@lists.freedesktop.org
Cc:  # v6.18+
Signed-off-by: Thomas Hellström 
Reviewed-by: Matthew Auld 
Acked-by: Maarten Lankhorst 
Link: https://patch.msgid.link/20260121091048.41371-2-thomas.hellstrom@linux.intel.com
(cherry picked from commit 1e372b246199ca7a35f930177fea91b557dac16e)
Signed-off-by: Thomas Hellström

drm/bridge: samsung-dsim: samsung_dsim_host_attach: convert to of_drm_find_and_get_bridge()

2026-01-20T13:53:46+00:00

of_drm_find_bridge() is deprecated. Move to its replacement
of_drm_find_and_get_bridge() which gets a bridge reference, and ensure it
is put when done. Also switch to the drm_bridge::next_bridge pointer.

This needs to handle both cases: when of_drm_find_panel() succeeds and when
it fails.

In the 'else' case (i.e. when of_drm_find_panel() fails), just switch to
of_drm_find_and_get_bridge() to ensure the bridge is not freed while in use
in the function tail, when it is stored in dsi->bridge.next_bridge.

In the 'then' case (i.e. when of_drm_find_panel() succeeds),
devm_drm_panel_bridge_add() already increments the refcount using devres
which ties the bridge allocation lifetime to the device lifetime, so we
would not need to do anything. However to have the same behaviour in both
branches take an additional reference here, so that the bridge needs to be
put whichever branch is taken without more complicated logic. Ensure to
clear the bridge pointer however, to avoid calling drm_bridge_put() on an
ERR_PTR.

Acked-by: Maxime Ripard 
Tested-by: Marek Szyprowski 
Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-12-8bad3ef90b9f@bootlin.com
Signed-off-by: Luca Ceresoli

drm: of: drm_of_panel_bridge_remove(): convert to of_drm_find_and_get_bridge()

2026-01-20T13:53:45+00:00

of_drm_find_bridge() is deprecated. Move to its replacement
of_drm_find_and_get_bridge() which gets a bridge reference, and ensure it
is put when done.

Acked-by: Maxime Ripard 
Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-2-8bad3ef90b9f@bootlin.com
Signed-off-by: Luca Ceresoli

drm: of: drm_of_panel_bridge_remove(): fix device_node leak

2026-01-20T13:53:45+00:00

drm_of_panel_bridge_remove() uses of_graph_get_remote_node() to get a
device_node but does not put the node reference.

Fixes: c70087e8f16f ("drm/drm_of: add drm_of_panel_bridge_remove function")
Cc: stable@vger.kernel.org # v4.15
Acked-by: Maxime Ripard 
Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-1-8bad3ef90b9f@bootlin.com
Signed-off-by: Luca Ceresoli

drm/rockchip: inno-hdmi: make inno_hdmi.h header self-contained

2026-01-20T12:38:20+00:00

Include linux/types.h for u8.

Reviewed-by: Andy Yan 
Link: https://patch.msgid.link/20260107152704.2290146-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula