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2026-01-27drm/bridge: imx8qxp-pxl2dpi: Fix NULL pointer dereference in ↵Liu Ying1-0/+3
imx8qxp_pxl2dpi_bridge_destroy() Pointer bridge->driver_private in imx8qxp_pxl2dpi_bridge_destroy() is NULL when imx8qxp_pxl2dpi_bridge_probe() returns error, because the pointer is initialized only when imx8qxp_pxl2dpi_bridge_probe() returns 0. The NULL pointer would be set to pointer p2d and then NULL pointer p2d would be dereferenced. Fix this by returning early from imx8qxp_pxl2dpi_bridge_destroy() if !p2d is true. Fixes: 900699ba830f ("drm/bridge: imx8qxp-pxl2dpi: get/put the companion bridge") Signed-off-by: Liu Ying <victor.liu@nxp.com> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20260123-imx8qxp-drm-bridge-fixes-v1-2-8bb85ada5866@nxp.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-27drm/bridge: imx8qxp-ldb: Fix NULL pointer dereference in ↵Liu Ying1-2/+5
imx8qxp_ldb_bridge_destroy() Pointer bridge->driver_private in imx8qxp_ldb_bridge_destroy() is NULL when a LDB channel is unavailable or imx8qxp_ldb_probe() returns error, because ldb_add_bridge_helper() is the last function called from imx8qxp_ldb_probe() and it doesn't initialize bridge->driver_private if a LDB channel is unavailable. The NULL pointer would be set to pointer ldb_ch and then NULL pointer ldb_ch would be dereferenced. Fix this by returning early from imx8qxp_ldb_bridge_destroy() if !ldb_ch is true. Fixes: 32529d384cea ("drm/bridge: imx8qxp-ldb: convert to of_drm_find_and_get_bridge()") Signed-off-by: Liu Ying <victor.liu@nxp.com> Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Link: https://patch.msgid.link/20260123-imx8qxp-drm-bridge-fixes-v1-1-8bb85ada5866@nxp.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-26drm/display: bridge_connector: move audio_infoframe checks to OP_HDMIDmitry Baryshkov1-3/+6
There are DRM_BRIDGE_OP_HDMI_AUDIO bridges (e.g. Lontium LT9611UXC) which don't implement DRM_BRIDGE_OP_HDMI and don't implement hdmi_clear_audio_infoframe / hdmi_write_audio_infoframe callbacks. Move corresponding checks under the DRM_BRIDGE_OP_HDMI condition, making sure that we require those callbacks only from the bridges which are actually going to use them. Fixes: b626b1a1c9cc ("drm/bridge: refactor HDMI InfoFrame callbacks") Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260126-drm-fix-lt9611uxc-v1-1-04a635a8f5cf@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
2026-01-23Merge tag 'drm-misc-next-2026-01-22' of ↵Dave Airlie94-1482/+3101
https://gitlab.freedesktop.org/drm/misc/kernel into drm-next 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 <airlied@redhat.com> From: Maxime Ripard <mripard@redhat.com> Link: https://patch.msgid.link/20260122-antique-sexy-junglefowl-1bc5a8@houat
2026-01-23Merge tag 'drm-intel-next-fixes-2026-01-22' of ↵Dave Airlie1-1/+6
https://gitlab.freedesktop.org/drm/i915/kernel into drm-next - Don't enable Panel Replay on sink if globally disabled Signed-off-by: Dave Airlie <airlied@redhat.com> From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patch.msgid.link/aXHZjieG9PkFKjZ2@jlahtine-mobl
2026-01-21drm/bridge: fix kdoc syntaxLuca Ceresoli1-0/+3
Use the correct kdoc syntax for bullet list. Fixes kdoc error and warning: Documentation/gpu/drm-kms-helpers:197: ./drivers/gpu/drm/drm_bridge.c:1519: ERROR: Unexpected indentation. [docutils] Documentation/gpu/drm-kms-helpers:197: ./drivers/gpu/drm/drm_bridge.c:1521: WARNING: Block quote ends without a blank line; unexpected unindent. [docutils] Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202512302319.1PGGt3CN-lkp@intel.com/ Fixes: 9da0e06abda8 ("drm/bridge: deprecate of_drm_find_bridge()") Reviewed-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com> Link: https://patch.msgid.link/20251231-drm-bridge-alloc-getput-drm_of_find_bridge-kdoc-fix-v1-1-193a03f0609c@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-21drm: rcar-du: lvds: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-1/+9
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. Since the companion bridge pointer is used by .atomic_enable, putting its reference in the remove function would be dangerous. Use .destroy to put it on final deallocation. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-3-v2-6-8d7a3dbacdf4@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-21drm/exynos: hdmi: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-1/+3
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. Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-3-v2-5-8d7a3dbacdf4@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-21drm/mediatek: mtk_hdmi*: convert to of_drm_find_and_get_bridge()Luca Ceresoli4-7/+6
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 by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-3-v2-4-8d7a3dbacdf4@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-21drm/imx/dw-hdmi: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-2/+5
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 <mripard@kernel.org> Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-3-v2-3-8d7a3dbacdf4@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-21drm/meson/dw-hdmi: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-1/+5
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. dw_hdmi->bridge is used only in dw_hdmi_top_thread_irq(), so in order to avoid potential use-after-free ensure the irq is freed before putting the dw_hdmi->bridge reference. Acked-by: Maxime Ripard <mripard@kernel.org> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-3-v2-2-8d7a3dbacdf4@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-21drm/bridge: dw-hdmi: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-4/+3
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 by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-3-v2-1-8d7a3dbacdf4@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-21dma-buf: add some tracepoints to debug.gaoxiang172-30/+29
Since we can only inspect dmabuf by iterating over process FDs or the dmabuf_list, we need to add our own tracepoints to track its status in real time in production. For example: binder:3016_1-3102 [006] ...1. 255.126521: dma_buf_export: exp_name=qcom,system size=12685312 ino=2738 binder:3016_1-3102 [006] ...1. 255.126528: dma_buf_fd: exp_name=qcom,system size=12685312 ino=2738 fd=8 binder:3016_1-3102 [006] ...1. 255.126642: dma_buf_mmap_internal: exp_name=qcom,system size=28672 ino=2739 kworker/6:1-86 [006] ...1. 255.127194: dma_buf_put: exp_name=qcom,system size=12685312 ino=2738 RenderThread-9293 [006] ...1. 316.618179: dma_buf_get: exp_name=qcom,system size=12771328 ino=2762 fd=176 RenderThread-9293 [006] ...1. 316.618195: dma_buf_dynamic_attach: exp_name=qcom,system size=12771328 ino=2762 attachment:ffffff880a18dd00 is_dynamic=0 dev_name=kgsl-3d0 RenderThread-9293 [006] ...1. 318.878220: dma_buf_detach: exp_name=qcom,system size=12771328 ino=2762 attachment:ffffff880a18dd00 is_dynamic=0 dev_name=kgsl-3d0 Signed-off-by: Xiang Gao <gaoxiang17@xiaomi.com> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20260109115411.115270-1-gxxa03070307@gmail.com
2026-01-21drm/bridge: simple: add the Algoltek AG6311 DP-to-HDMI bridgeVal Packett1-0/+5
The Algoltek AG6311 is a transparent DisplayPort to HDMI bridge. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Val Packett <val@packett.cool> Link: https://patch.msgid.link/20260120234029.419825-8-val@packett.cool Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
2026-01-21dt-bindings: display: bridge: simple: document the Algoltek AG6311 ↵Val Packett1-0/+1
DP-to-HDMI bridge The Algoltek AG6311 is a transparent DisplayPort to HDMI bridge. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Val Packett <val@packett.cool> Link: https://patch.msgid.link/20260120234029.419825-7-val@packett.cool Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
2026-01-21dt-bindings: vendor-prefixes: Add AlgolTekVal Packett1-0/+2
AlgolTek is a Taiwanese chip manufacturer specialized in high-speed signal and power transmission and conversion. Signed-off-by: Val Packett <val@packett.cool> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patch.msgid.link/20260120234029.419825-4-val@packett.cool Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
2026-01-21drm/bridge: anx7625: Fix invalid EDID sizeLoic Poulain1-1/+1
DRM checks EDID block count against allocated size in drm_edid_valid function. We have to allocate the right EDID size instead of the max size to prevent the EDID to be reported as invalid. Cc: stable@kernel.org Fixes: 7c585f9a71aa ("drm/bridge: anx7625: use struct drm_edid more") Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com> Link: https://patch.msgid.link/20251218151307.95491-1-loic.poulain@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
2026-01-21drm/tests/drm_buddy: Add tests for allocations exceeding max_orderSanjay Yadav1-0/+35
Add kunit tests that exercise edge cases where allocation requests exceed mm->max_order after rounding. This can happen with non-power-of-two VRAM sizes when the allocator rounds up requests. For example, with 10G VRAM (8G + 2G roots), mm->max_order represents the 8G block. A 9G allocation can round up to 16G in multiple ways: CONTIGUOUS allocation rounds to next power-of-two, or non-CONTIGUOUS with 8G min_block_size rounds to next alignment boundary. The test validates CONTIGUOUS and RANGE flag combinations, ensuring that only CONTIGUOUS-alone allocations use try_harder fallback, while other combinations return -EINVAL when rounded size exceeds memory, preventing BUG_ON assertions. Cc: Christian König <christian.koenig@amd.com> Cc: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> Suggested-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Sanjay Yadav <sanjay.kumar.yadav@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> Link: https://patch.msgid.link/20260108113227.2101872-6-sanjay.kumar.yadav@intel.com
2026-01-21drm/buddy: Prevent BUG_ON by validating rounded allocationSanjay Yadav1-0/+9
When DRM_BUDDY_CONTIGUOUS_ALLOCATION is set, the requested size is rounded up to the next power-of-two via roundup_pow_of_two(). Similarly, for non-contiguous allocations with large min_block_size, the size is aligned up via round_up(). Both operations can produce a rounded size that exceeds mm->size, which later triggers BUG_ON(order > mm->max_order). Example scenarios: - 9G CONTIGUOUS allocation on 10G VRAM memory: roundup_pow_of_two(9G) = 16G > 10G - 9G allocation with 8G min_block_size on 10G VRAM memory: round_up(9G, 8G) = 16G > 10G Fix this by checking the rounded size against mm->size. For non-contiguous or range allocations where size > mm->size is invalid, return -EINVAL immediately. For contiguous allocations without range restrictions, allow the request to fall through to the existing __alloc_contig_try_harder() fallback. This ensures invalid user input returns an error or uses the fallback path instead of hitting BUG_ON. v2: (Matt A) - Add Fixes, Cc stable, and Closes tags for context Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6712 Fixes: 0a1844bf0b53 ("drm/buddy: Improve contiguous memory allocation") Cc: <stable@vger.kernel.org> # v6.7+ Cc: Christian König <christian.koenig@amd.com> Cc: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> Suggested-by: Matthew Auld <matthew.auld@intel.com> Signed-off-by: Sanjay Yadav <sanjay.kumar.yadav@intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> Link: https://patch.msgid.link/20260108113227.2101872-5-sanjay.kumar.yadav@intel.com
2026-01-21drm/atmel-hlcdc: don't reject the commit if the src rect has fractional partsLudovic Desroches1-15/+4
Don’t reject the commit when the source rectangle has fractional parts. This can occur due to scaling: drm_atomic_helper_check_plane_state() calls drm_rect_clip_scaled(), which may introduce fractional parts while computing the clipped source rectangle. This does not imply the commit is invalid, so we should accept it instead of discarding it. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251120-lcd_scaling_fix-v1-1-5ffc98557923@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-21drm/atmel-hlcdc: fix use-after-free of drm_crtc_commit after releaseLudovic Desroches1-2/+1
The atmel_hlcdc_plane_atomic_duplicate_state() callback was copying the atmel_hlcdc_plane state structure without properly duplicating the drm_plane_state. In particular, state->commit remained set to the old state commit, which can lead to a use-after-free in the next drm_atomic_commit() call. Fix this by calling __drm_atomic_helper_duplicate_plane_state(), which correctly clones the base drm_plane_state (including the ->commit pointer). It has been seen when closing and re-opening the device node while another DRM client (e.g. fbdev) is still attached: ============================================================================= BUG kmalloc-64 (Not tainted): Poison overwritten ----------------------------------------------------------------------------- 0xc611b344-0xc611b344 @offset=836. First byte 0x6a instead of 0x6b FIX kmalloc-64: Restoring Poison 0xc611b344-0xc611b344=0x6b Allocated in drm_atomic_helper_setup_commit+0x1e8/0x7bc age=178 cpu=0 pid=29 drm_atomic_helper_setup_commit+0x1e8/0x7bc drm_atomic_helper_commit+0x3c/0x15c drm_atomic_commit+0xc0/0xf4 drm_framebuffer_remove+0x4cc/0x5a8 drm_mode_rmfb_work_fn+0x6c/0x80 process_one_work+0x12c/0x2cc worker_thread+0x2a8/0x400 kthread+0xc0/0xdc ret_from_fork+0x14/0x28 Freed in drm_atomic_helper_commit_hw_done+0x100/0x150 age=8 cpu=0 pid=169 drm_atomic_helper_commit_hw_done+0x100/0x150 drm_atomic_helper_commit_tail+0x64/0x8c commit_tail+0x168/0x18c drm_atomic_helper_commit+0x138/0x15c drm_atomic_commit+0xc0/0xf4 drm_atomic_helper_set_config+0x84/0xb8 drm_mode_setcrtc+0x32c/0x810 drm_ioctl+0x20c/0x488 sys_ioctl+0x14c/0xc20 ret_fast_syscall+0x0/0x54 Slab 0xef8bc360 objects=21 used=16 fp=0xc611b7c0 flags=0x200(workingset|zone=0) Object 0xc611b340 @offset=832 fp=0xc611b7c0 Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251024-lcd_fixes_mainlining-v1-2-79b615130dc3@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-21drm/atmel-hlcdc: fix memory leak from the atomic_destroy_state callbackLudovic Desroches1-2/+1
After several commits, the slab memory increases. Some drm_crtc_commit objects are not freed. The atomic_destroy_state callback only put the framebuffer. Use the __drm_atomic_helper_plane_destroy_state() function to put all the objects that are no longer needed. It has been seen after hours of usage of a graphics application or using kmemleak: unreferenced object 0xc63a6580 (size 64): comm "egt_basic", pid 171, jiffies 4294940784 hex dump (first 32 bytes): 40 50 34 c5 01 00 00 00 ff ff ff ff 8c 65 3a c6 @P4..........e:. 8c 65 3a c6 ff ff ff ff 98 65 3a c6 98 65 3a c6 .e:......e:..e:. backtrace (crc c25aa925): kmemleak_alloc+0x34/0x3c __kmalloc_cache_noprof+0x150/0x1a4 drm_atomic_helper_setup_commit+0x1e8/0x7bc drm_atomic_helper_commit+0x3c/0x15c drm_atomic_commit+0xc0/0xf4 drm_atomic_helper_set_config+0x84/0xb8 drm_mode_setcrtc+0x32c/0x810 drm_ioctl+0x20c/0x488 sys_ioctl+0x14c/0xc20 ret_fast_syscall+0x0/0x54 Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251024-lcd_fixes_mainlining-v1-1-79b615130dc3@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-21mailmap: Update Jessica Zhang's email addressJessica Zhang1-1/+3
Update mailmap to point to my current address Reported-by: Neil Armstrong <neil.armstrong@linaro.org> Link: http://lore.kernel.org/r/6eedef19-5473-4c09-bae5-04490f711d9e@linaro.org Signed-off-by: Jessica Zhang <jesszhan0024@gmail.com> Acked-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patch.msgid.link/20251029-mailmap-fix-v1-1-8534ffa12ed3@gmail.com
2026-01-20drm/bridge: samsung-dsim: samsung_dsim_host_attach: convert to ↵Luca Ceresoli2-8/+13
of_drm_find_and_get_bridge() 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 <mripard@kernel.org> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> 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 <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: samsung-dsim: samsung_dsim_host_attach: don't use the bridge ↵Luca Ceresoli1-4/+5
pointer as an error indicator In preparation to handle refcounting of the out_bridge, we need to ensure the out_bridge pointer contains either a valid bridge pointer or NULL, not an ERR_PTR. Otherwise calls such as drm_bridge_get/put() would try to redeference an ERR_PTR. Stop using IS_ERR(next_bridge) as an indication of an error, and instead use the 'ret' integer. No functional change. Acked-by: Maxime Ripard <mripard@kernel.org> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-11-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: samsung-dsim: samsung_dsim_host_attach: use a temporary variable ↵Luca Ceresoli1-9/+17
for the next bridge In preparation to handle refcounting of the out_bridge, we need to ensure the out_bridge pointer contains either a valid bridge pointer or NULL, not an ERR_PTR. Otherwise calls such as drm_bridge_get/put() would try to redeference an ERR_PTR. As a preliminary cleanup, add a temporary local 'next_bridge' pointer and only copy it in dsi->out_bridge as late as possible, i.e. just before calling pdata->host_ops->attach() which uses it (only in the exynos driver). Not strictly needed, but for symmetry move the clearing of dsi->out_bridge in samsung_dsim_host_detach() to after pdata->host_ops->detach(). Acked-by: Maxime Ripard <mripard@kernel.org> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-10-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: imx8qxp-ldb: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-1/+11
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. Since the companion bridge pointer is used by many bridge funcs, putting its reference in the remove function would be dangerous. Use .destroy to put it on final deallocation. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-9-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: imx8mp-hdmi-pvi: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-8/+7
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 by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-8-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: lt8912b: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-16/+15
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 by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-7-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: tpd12s015: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-5/+3
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 by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-6-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: tfp410: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-14/+13
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 by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-5-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: thc63lvd1024: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-4/+3
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 by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-4-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm/bridge: sii902x: convert to of_drm_find_and_get_bridge()Luca Ceresoli1-4/+3
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 by using the drm_bridge::next_bridge pointer. Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patch.msgid.link/20260109-drm-bridge-alloc-getput-drm_of_find_bridge-2-v2-3-8bad3ef90b9f@bootlin.com Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
2026-01-20drm: of: drm_of_panel_bridge_remove(): convert to of_drm_find_and_get_bridge()Luca Ceresoli1-1/+2
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 <mripard@kernel.org> 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 <luca.ceresoli@bootlin.com>
2026-01-20drm: of: drm_of_panel_bridge_remove(): fix device_node leakLuca Ceresoli1-0/+3
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 <mripard@kernel.org> 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 <luca.ceresoli@bootlin.com>
2026-01-20drm/rockchip: inno-hdmi: make inno_hdmi.h header self-containedJani Nikula1-0/+2
Include linux/types.h for u8. Reviewed-by: Andy Yan <andy.yan@rock-chips.com> Link: https://patch.msgid.link/20260107152704.2290146-1-jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2026-01-20drm/tyr: rename pad0 to selected_coherencyAlice Ryhl1-2/+3
This applies the uapi change in commit ea78ec982653 ("drm/panthor: Expose the selected coherency protocol to the UMD") to the Tyr driver as well. Once this is merged with drm-rust-next, this kind of change to the uapi struct is automatically reflected in the Tyr driver's GpuInfo. [1] Link: https://lore.kernel.org/r/aW8-oH7dtp-OTAZC@google.com [1] Acked-by: Danilo Krummrich <dakr@kernel.org> Link: https://patch.msgid.link/20260120-tyr-pad0-coherency-v1-1-91f40e56c67a@google.com Signed-off-by: Alice Ryhl <aliceryhl@google.com>
2026-01-20drm/atmel-hlcdc: destroy properly the plane state in the reset callbackLudovic Desroches1-26/+26
If there is a plane state to destroy when doing a plane reset, destroy it using the atmel_hlcdc_plane_destroy_state() function. So we call __drm_atomic_helper_plane_destroy_state() and avoid code duplication. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251218-lcd_cleanup_mainline-v2-8-df837aba878f@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-20drm/atmel-hlcdc: use drmm_universal_plane_alloc()Ludovic Desroches1-14/+7
Use the drmm_universal_plane_alloc() helper to simplify the code. Using it, we no longer need to register the destroy callback for drm_plane_funcs. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251218-lcd_cleanup_mainline-v2-7-df837aba878f@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-20drm/atmel-hlcdc: use drmm_crtc_alloc_with_planes()Ludovic Desroches1-26/+6
Use drmm_crtc_alloc_with_planes() to simplify the code. As we no longer have to take care about cleanup, we can get rid of atmel_hlcdc_crtc_destroy(). Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251218-lcd_cleanup_mainline-v2-6-df837aba878f@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-20drm/atmel-hlcdc: use devm_drm_of_get_bridge()Ludovic Desroches1-20/+5
Get rid of drm_of_find_panel_or_bridge() as it is deprecated and use devm_drm_of_get_bridge() instead. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251218-lcd_cleanup_mainline-v2-5-df837aba878f@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-20drm/atmel-hlcdc: use drm_crtc_mask()Ludovic Desroches2-7/+9
Prefer using the drm_crtc_mask() helper instead of a raw value. It involves reordering components initialization as we need a valid crtc. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251218-lcd_cleanup_mainline-v2-4-df837aba878f@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-20drm/atmel-hlcdc: use drmm_simple_encoder_alloc()Ludovic Desroches1-18/+9
Simplify the code using drmm_simple_encoder_alloc to handle allocation and initialization at once. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251218-lcd_cleanup_mainline-v2-3-df837aba878f@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-20drm/atmel-hlcdc: add support for the nomodeset kernel parameterLudovic Desroches1-0/+3
According to Documentation/admin-guide/kernel-parameters.txt, this parameter can be used to disable kernel modesetting. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Dharma Balasubiramani <dharma.b@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251218-lcd_cleanup_mainline-v2-2-df837aba878f@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-20drm/atmel-hlcdc: use managed device resources for the display controllerLudovic Desroches2-13/+13
Take benefit of managed device resources to reduce the risk of memory leak and to simplify error paths. Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> Reviewed-by: Manikandan Muralidharan <manikandan.m@microchip.com> Link: https://patch.msgid.link/20251218-lcd_cleanup_mainline-v2-1-df837aba878f@microchip.com Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
2026-01-20drm/panel: jd9365da: Support for Anbernic RG-DS PanelChris Morgan1-2/+269
Add support for both panels used in the Anbernic RG-DS. These panels are physically identical and differ only with a single instruction in the init sequence. The init sequence commands suggest it uses an identical controller as the jd9365da. Additionally, allow specifying per-panel dsi->mode_flags that can override the default values. Co-developed-by: Alexander Weinzerl <aweinzerl13@yahoo.com> Signed-off-by: Alexander Weinzerl <aweinzerl13@yahoo.com> Signed-off-by: Chris Morgan <macromorgan@hotmail.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patch.msgid.link/20260113195721.151205-4-macroalpha82@gmail.com
2026-01-20dt-bindings: display: panel: Add compatible for Anbernic RG-DSChris Morgan1-0/+2
The Anbernic RG-DS uses two (mostly) identical panels as a top and bottom panel which appear to use the same controller as the Jadard JD9365DA-H3. The panels differ with a parameter defined differently in the init sequence. Signed-off-by: Chris Morgan <macromorgan@hotmail.com> Acked-by: Rob Herring (Arm) <robh@kernel.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patch.msgid.link/20260113195721.151205-3-macroalpha82@gmail.com
2026-01-20drm: panel: jd9365da: Use gpiod_set_value_cansleep()Chris Morgan1-5/+5
Change instances of gpiod_set_value() to gpiod_set_value_cansleep(). Uses of gpiod_set_value() generates warnings when used in instances where desc->gdev->can_sleep is true. Signed-off-by: Chris Morgan <macromorgan@hotmail.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patch.msgid.link/20260113195721.151205-2-macroalpha82@gmail.com
2026-01-20drm/rockchip: vop2: Add mode valid callback for crtcAndy Yan1-0/+12
The different Video Ports support different maximum resolutions. Reject resolutions that are not supported by a specific VP. Only the output width is checked because the hardware itself does not have a hard output height limit. Filter the mode that can't output by the VP/crtc. Signed-off-by: Andy Yan <andy.yan@rock-chips.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Tested-by: Sebastian Reichel <sebastian.reichel@collabora.com> # Sige5 Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patch.msgid.link/20260117020738.294825-1-andyshrk@163.com
2026-01-20drm/rockchip: dw_hdmi_qp: Optimize RK3588 HPD interrupt handlingCristian Ciocaltea1-5/+1
The threaded interrupt handler on RK3588 checks HPD IRQ status before deciding to continue with interrupt clearing and unmasking. However, this is not really necessary, since the hard interrupt handler already performs the very same verification before waking the handler thread. Get rid of the redundant verification of the HPD interrupt status in the threaded interrupt handler. Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patch.msgid.link/20260115-dw-hdmi-qp-hpd-v1-2-e59c166eaa65@collabora.com
generated by cgit v1.2.3 (git 2.39.0) at 2026-05-02 18:48:19 +0300