lwn.git/drivers/gpu/drm/tiny, branch master

drm/bochs: Drop manual put on probe error path

2026-05-07T08:51:18+00:00

bochs_pci_probe() allocates the DRM device with devm_drm_dev_alloc(), which registers a devres action to drop the initial DRM device reference on driver detach or probe failure. The error path currently calls drm_dev_put() manually. If probe then returns an error, devres will run the registered release action and put the same device again, after the first put may already have released it. Return the probe error directly and let devres own the final put. Signed-off-by: Myeonghun Pak Fixes: 04826f588682 ("drm/bochs: Allocate DRM device in struct bochs_device") Signed-off-by: Thomas Zimmermann Reviewed-by: Thomas Zimmermann Link: https://patch.msgid.link/20260424123506.32275-1-mhun512@gmail.com

drm/appletbdrm: Use kvzalloc for big allocations

2026-04-27T09:33:01+00:00

This driver is attached to a ~2000x80 screen, which is a lot more than a single page. This causes out of memory errors in some rare cases. Reported-by: soopyc Closes: https://github.com/t2linux/fedora/issues/51 Signed-off-by: Sasha Finkelstein Signed-off-by: Thomas Zimmermann Reviewed-by: Aditya Garg Reviewed-by: Thomas Zimmermann Fixes: 0670c2f56e45 ("drm/tiny: add driver for Apple Touch Bars in x86 Macs") Cc: # v6.15+ Link: https://patch.msgid.link/20260420-x86-tb-vmalloc-v1-1-7757ff657223@chaosmail.tech

Merge tag 'drm-fixes-2026-04-24' of https://gitlab.freedesktop.org/drm/kernel

2026-04-24T18:44:52+00:00

Pull more drm fixes from Dave Airlie: "These are the regular fixes that have built up over last couple of weeks, all pretty minor and spread all over. atomic: - raise the vblank timeout to avoid it on virtual drivers - fix colorop duplication bridge: - stm_lvds: state check fix - dw-mipi-dsi: bridge reference leak fix panel: - visionx-rm69299: init fix dma-fence: - fix sparse warning dma-buf: - UAF fix panthor: - mapping fix arcgpu: - device_node reference leak fix nouveau: - memory leak in error path fix - overflow in reloc path for old hw fix hv: - Kconfig fix v3d: - infinite loop fix" * tag 'drm-fixes-2026-04-24' of https://gitlab.freedesktop.org/drm/kernel: drm/nouveau: fix u32 overflow in pushbuf reloc bounds check MAINTAINERS: split hisilicon maintenance and add Yongbang Shi for hibmc-drm matainers drm/v3d: Reject empty multisync extension to prevent infinite loop drm/panel: visionox-rm69299: Make use of prepare_prev_first drm/drm_atomic: duplicate colorop states if plane color pipeline in use drm/nouveau: fix nvkm_device leak on aperture removal failure hv: Select CONFIG_SYSFB only for CONFIG_HYPERV_VMBUS dma-fence: Silence sparse warning in dma_fence_describe drm/bridge: dw-mipi-dsi: Fix bridge leak when host attach fails drm/arcpgu: fix device node leak drm/panthor: Fix outdated function documentation drm/panthor: Extend VM locked region for remap case to be a superset dma-buf: fix UAF in dma_buf_put() tracepoint drm/bridge: stm_lvds: Do not fail atomic_check on disabled connector drm/atomic: Increase timeout in drm_atomic_helper_wait_for_vblanks()

drm/arcpgu: fix device node leak

2026-04-14T09:21:48+00:00

This function gets a device_node reference via of_graph_get_remote_port_parent() and stores it in encoder_node, but never puts that reference. Add it. There used to be a of_node_put(encoder_node) but it has been removed by mistake during a rework in commit 3ea66a794fdc ("drm/arc: Inline arcpgu_drm_hdmi_init"). Fixes: 3ea66a794fdc ("drm/arc: Inline arcpgu_drm_hdmi_init") Cc: stable@vger.kernel.org Reviewed-by: Louis Chauvet Link: https://patch.msgid.link/20260402-drm-arcgpu-fix-device-node-leak-v2-1-d773cf754ae5@bootlin.com Signed-off-by: Luca Ceresoli

drm/panel-mipi-dbi: Use regular atomic helpers; drop simple-display helpers

2026-03-25T14:05:02+00:00

Replace simple-display helpers with regular atomic helpers. Store the pipeline elements in struct panel_mipi_dbi_device and initialize them as part of probing the device. Use mipi-dbi's existing helpers and initializer macros where possible. Effectively open-codes the modesetting code in the initializer helpers of mipi-dbi and simple-display. Panel-mipi-dbi requires a custom helper for CRTC enablement, and non-freeing cleanup of the pipeline. v2: - fix connector initialization Signed-off-by: Thomas Zimmermann Acked-by: David Lechner Tested-by: David Lechner Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260319160110.109610-11-tzimmermann@suse.de

drm/mi0283qt: Use regular atomic helpers; drop simple-display helpers

2026-03-25T14:04:58+00:00

Replace simple-display helpers with regular atomic helpers. Store the pipeline elements in struct mi0283qt_device and initialize them as part of probing the device. Use mipi-dbi's existing helpers and initializer macros where possible. Effectively open-codes the modesetting code in the initializer helpers of mipi-dbi and simple-display. Mi0283qt requires a custom helper for CRTC enablement, and non-freeing cleanup of the pipeline. v3: - set dbi variable (David) v2: - fix connector initialization - fix coding style Signed-off-by: Thomas Zimmermann Acked-by: David Lechner Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260319160110.109610-10-tzimmermann@suse.de

drm/ili9486: Use regular atomic helpers; drop simple-display helpers

2026-03-25T14:04:55+00:00

Replace simple-display helpers with regular atomic helpers. Store the pipeline elements in struct ili9486_device and initialize them as part of probing the device. Use mipi-dbi's existing helpers and initializer macros where possible. Effectively open-codes the modesetting code in the initializer helpers of mipi-dbi and simple-display. Ili9486 requires a custom helper for CRTC enablement, and non-freeing cleanup of the pipeline. v3: - set ili9486 variable (David) v2: - fix connector initialization Signed-off-by: Thomas Zimmermann Acked-by: David Lechner Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260319160110.109610-9-tzimmermann@suse.de

drm/ili9341: Use regular atomic helpers; drop simple-display helpers

2026-03-25T14:04:52+00:00

Replace simple-display helpers with regular atomic helpers. Store the pipeline elements in struct ili9341_device and initialize them as part of probing the device. Use mipi-dbi's existing helpers and initializer macros where possible. Effectively open-codes the modesetting code in the initializer helpers of mipi-dbi and simple-display. Ili9341 requires a custom helper for CRTC enablement, and non-freeing cleanup of the pipeline. v3: - set dbi variable (David) v2: - fix connector initialization Signed-off-by: Thomas Zimmermann Acked-by: David Lechner Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260319160110.109610-8-tzimmermann@suse.de

drm/ili9225: Use regular atomic helpers; drop simple-display helpers

2026-03-25T14:04:47+00:00

Replace simple-display helpers with regular atomic helpers. Store the pipeline elements in struct ili9225_device and initialize them as part of probing the device. Use mipi-dbi's existing helpers and initializer macros where possible. Effectively open-codes the modesetting code in the initializer helpers of mipi-dbi and simple-display. Ili9225 requires custom helpers for various pipeline elements, and non-freeing cleanup of the pipeline. v3: - set dbi variable (David) v2: - fix connector initialization Signed-off-by: Thomas Zimmermann Acked-by: David Lechner Tested-by: David Lechner Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260319160110.109610-7-tzimmermann@suse.de

drm/ili9163: Use regular atomic helpers; drop simple-display helpers

2026-03-25T14:04:44+00:00

Replace simple-display helpers with regular atomic helpers. Store the pipeline elements in struct ili9163_device and initialize them as part of probing the device. Use mipi-dbi's existing helpers and initializer macros where possible. Effectively open-codes the modesetting code in the initializer helpers of mipi-dbi and simple-display. Ili9163 requires a custom helper for CRTC enablement, and non-freeing cleanup of the pipeline. v3: - set dbi variable (David) v2: - fix connector initialization Signed-off-by: Thomas Zimmermann Acked-by: David Lechner Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260319160110.109610-6-tzimmermann@suse.de