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* drm/bridge: Pass full state to atomic_disableMaxime Ripard2025-02-192-2/+2
| | | | | | | | | | | | It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_disable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-4-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
* drm/bridge: Pass full state to atomic_enableMaxime Ripard2025-02-192-4/+2
| | | | | | | | | | | | It's pretty inconvenient to access the full atomic state from drm_bridges, so let's change the atomic_enable hook prototype to pass it directly. Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Tested-by: Douglas Anderson <dianders@chromium.org> Link: https://lore.kernel.org/r/20250213-bridge-connector-v3-3-e71598f49c8f@kernel.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
* drm/omap: Remove hdmi5_core_handle_irqs()Dr. David Alan Gilbert2025-01-242-18/+0
| | | | | | | | | | | | | hdmi5_core_handle_irqs() is a function that was copied from omapdss by commit f76ee892a99e ("omapfb: copy omapdss & displays for omapfb") but it wasn't used in the original anyway. Remove it. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241218020124.278925-1-linux@treblig.org
* drm/omap/dss: Use syscon_regmap_lookup_by_phandle_argsKrzysztof Kozlowski2025-01-241-9/+3
| | | | | | | | | | | | | | | | | Use syscon_regmap_lookup_by_phandle_args() which is a wrapper over syscon_regmap_lookup_by_phandle() combined with getting the syscon argument. Except simpler code this annotates within one line that given phandle has arguments, so grepping for code would be easier. There is also no real benefit in printing errors on missing syscon argument, because this is done just too late: runtime check on static/build-time data. Dtschema and Devicetree bindings offer the static/build-time check for this already. Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250114145840.505459-2-krzysztof.kozlowski@linaro.org
* drm/omap/dss: Use of_property_present() to test existence of DT propertyKrzysztof Kozlowski2025-01-241-1/+1
| | | | | | | | of_property_read_bool() should be used only on boolean properties. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250114145840.505459-1-krzysztof.kozlowski@linaro.org
* Merge remote-tracking branch 'drm/drm-next' into drm-misc-nextMaarten Lankhorst2024-12-099-9/+9
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The v6.13-rc2 release included a bunch of breaking changes, specifically the MODULE_IMPORT_NS commit. Backmerge in order to fix them before the next pull-request. Include the fix from Stephen Roswell. Caused by commit 25c3fd1183c0 ("drm/virtio: Add a helper to map and note the dma addrs and lengths") Interacting with commit cdd30ebb1b9f ("module: Convert symbol namespace to string literal") Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Link: https://patchwork.freedesktop.org/patch/msgid/20241209121717.2abe8026@canb.auug.org.au Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
| * module: Convert symbol namespace to string literalPeter Zijlstra2024-12-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify\(ns\)/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify\(ns\)/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH <gregkh@linuxfoundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * Get rid of 'remove_new' relic from platform driver structLinus Torvalds2024-12-018-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The continual trickle of small conversion patches is grating on me, and is really not helping. Just get rid of the 'remove_new' member function, which is just an alias for the plain 'remove', and had a comment to that effect: /* * .remove_new() is a relic from a prototype conversion of .remove(). * New drivers are supposed to implement .remove(). Once all drivers are * converted to not use .remove_new any more, it will be dropped. */ This was just a tree-wide 'sed' script that replaced '.remove_new' with '.remove', with some care taken to turn a subsequent tab into two tabs to make things line up. I did do some minimal manual whitespace adjustment for places that used spaces to line things up. Then I just removed the old (sic) .remove_new member function, and this is the end result. No more unnecessary conversion noise. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | drm: remove driver date from struct drm_driver and all driversJani Nikula2024-12-051-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We stopped using the driver initialized date in commit 7fb8af6798e8 ("drm: deprecate driver date") and (eventually) started returning "0" for drm_version ioctl instead. Finish the job, and remove the unused date member from struct drm_driver, its initialization from drivers, along with the common DRIVER_DATE macros. v2: Also update drivers/accel (kernel test robot) Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Simon Ser <contact@emersion.fr> Acked-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Acked-by: Lucas De Marchi <lucas.demarchi@intel.com> Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> # msm Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/1f2bf2543aed270a06f6c707fd6ed1b78bf16712.1733322525.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
* | Merge drm/drm-next into drm-misc-nextMaxime Ripard2024-12-022-2/+4
|\| | | | | | | | | | | Kickstart 6.14 cycle. Signed-off-by: Maxime Ripard <mripard@kernel.org>
| * Merge tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds2024-11-2111-308/+73
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull drm updates from Dave Airlie: "There's a lot of rework, the panic helper support is being added to more drivers, v3d gets support for HW superpages, scheduler documentation, drm client and video aperture reworks, some new MAINTAINERS added, amdgpu has the usual lots of IP refactors, Intel has some Pantherlake enablement and xe is getting some SRIOV bits, but just lots of stuff everywhere. core: - split DSC helpers from DP helpers - clang build fixes for drm/mm test - drop simple pipeline support for gem vram - document submission error signaling - move drm_rect to drm core module from kms helper - add default client setup to most drivers - move to video aperture helpers instead of drm ones tests: - new framebuffer tests ttm: - remove swapped and pinned BOs from TTM lru panic: - fix uninit spinlock - add ABGR2101010 support bridge: - add TI TDP158 support - use standard PM OPS dma-fence: - use read_trylock instead of read_lock to help lockdep scheduler: - add errno to sched start to report different errors - add locking to drm_sched_entity_modify_sched - improve documentation xe: - add drm_line_printer - lots of refactoring - Enable Xe2 + PES disaggregation - add new ARL PCI ID - SRIOV development work - fix exec unnecessary implicit fence - define and parse OA sync props - forcewake refactoring i915: - Enable BMG/LNL ultra joiner - Enable 10bpx + CCS scanout on ICL+, fp16/CCS on TGL+ - use DSB for plane/color mgmt - Arrow lake PCI IDs - lots of i915/xe display refactoring - enable PXP GuC autoteardown - Pantherlake (PTL) Xe3 LPD display enablement - Allow fastset HDR infoframe changes - write DP source OUI for non-eDP sinks - share PCI IDs between i915 and xe amdgpu: - SDMA queue reset support - SMU 13.0.6, JPEG 4.0.3 updates - Initial runtime repartitioning support - rework IP structs for multiple IP instances - Fetch EDID from _DDC if available - SMU13 zero rpm user control - lots of fixes/cleanups amdkfd: - Increase event FIFO size - add topology cap flag for per queue reset msm: - DPU: - SA8775P support - (disabled by default) MSM8917, MSM8937, MSM8953 and MSM8996 support - Enable large framebuffer support - Drop MSM8998 and SDM845 - DP: - SA8775P support - GPU: - a7xx preemption support - Adreno A663 support ast: - warn about unsupported TX chips ivpu: - add coredump - add pantherlake support rockchip: - 4K@60Hz display enablement - generate pll programming tables panthor: - add timestamp query API - add realtime group priority - add fdinfo support etnaviv: - improve handling of DMA address limits - improve GPU hangcheck exynos: - Decon Exynos7870 support mediatek: - add OF graph support omap: - locking fixes bochs: - convert to gem/shmem from simpledrm v3d: - support big/super pages - add gemfs vc4: - BCM2712 support refactoring - add YUV444 format support udmabuf: - folio related fixes nouveau: - add panic support on nv50+" * tag 'drm-next-2024-11-21' of https://gitlab.freedesktop.org/drm/kernel: (1583 commits) drm/xe/guc: Fix dereference before NULL check drm/amd: Fix initialization mistake for NBIO 7.7.0 Revert "drm/amd/display: parse umc_info or vram_info based on ASIC" drm/amd/display: Fix failure to read vram info due to static BP_RESULT drm/amdgpu: enable GTT fallback handling for dGPUs only drm/amd/amdgpu: limit single process inside MES drm/fourcc: add AMD_FMT_MOD_TILE_GFX9_4K_D_X drm/amdgpu/mes12: correct kiq unmap latency drm/amdgpu: Support vcn and jpeg error info parsing drm/amd : Update MES API header file for v11 & v12 drm/amd/amdkfd: add/remove kfd queues on start/stop KFD scheduling drm/amdkfd: change kfd process kref count at creation drm/amdgpu: Cleanup shift coding style drm/amd/amdgpu: Increase MES log buffer to dump mes scratch data drm/amdgpu: Implement virt req_ras_err_count drm/amdgpu: VF Query RAS Caps from Host if supported drm/amdgpu: Add msg handlers for SRIOV RAS Telemetry drm/amdgpu: Update SRIOV Exchange Headers for RAS Telemetry Support drm/amd/display: 3.2.309 drm/amd/display: Adjust VSDB parser for replay feature ...
| * | gpu: drm: omapdrm: use new of_graph functionsKuninori Morimoto2024-10-242-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now we can use new port related functions for port parsing. Use it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Reviewed-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Acked-by: Helge Deller <deller@gmx.de> Link: https://lore.kernel.org/r/87cyjqb5sh.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
* | | drm/client: Move public client header to clients/ subdirectoryThomas Zimmermann2024-11-151-1/+1
| |/ |/| | | | | | | | | | | | | | | Move the public header file drm_client_setup.h to the clients/ subdirectory and update all drivers. No functional changes. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241108154600.126162-3-tzimmermann@suse.de
* | drm/omap: Clean up deadcode functionsDr. David Alan Gilbert2024-10-282-159/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dispc_enable_fifomerge() last use was removed by 2012's commit 85099f11bd03 ("Revert "OMAPDSS: APPLY: add fifo merge support funcs"") dispc_has_writeback(), dispc_wb_get_framedone_irq(), dispc_wb_go(), dispc_wb_go_busy() and dispc_wb_setup() were changed from statics to public symbols and unwired from a structure by 2020's commit dac62bcafeaa ("drm/omap: remove dispc_ops") but didn't have any users. dispc_mgr_get_clock_div() got renamed from dispc_get_clock_div() and it's last use was removed in 2011 by commit 42c9dee82129 ("OMAP: DSS2: Remove FB_OMAP_BOOTLOADER_INIT support") Remove them. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241026220010.93773-1-linux@treblig.org
* | drm/omapdrm: Run DRM default client setupThomas Zimmermann2024-09-264-102/+39
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rework fbdev probing to support fbdev_probe in struct drm_driver and remove the old fb_probe callback. Provide an initializer macro for struct drm_driver that sets the callback according to the kernel configuration. Call drm_client_setup() to run the kernel's default client setup for DRM. Set fbdev_probe in struct drm_driver, so that the client setup can start the common fbdev client. The omapdrm driver specifies a preferred color mode of 32. As this is the default if no format has been given, leave it out entirely. v5: - select DRM_CLIENT_SELECTION Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Acked-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-81-tzimmermann@suse.de
* | drm/omapdrm: Remove struct drm_fb_helper from struct omap_fbdev.Thomas Zimmermann2024-09-262-19/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Store instances of drm_fb_helper and struct omap_fbdev separately. This will allow omapdrm to use the common fbdev client, which allocates its own instance of struct drm_fb_helper. There is at most one instance of each per DRM device, so both can be referenced directly from the omap and DRM device structures. A later patchset might rework the common fbdev client to allow for storing both, drm_fb_helper and omap_fbdev, together in the same place. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Acked-by: Javier Martinez Canillas <javierm@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240924071734.98201-80-tzimmermann@suse.de
* | drm/omap: Fix locking in omap_gem_new_dmabuf()Tomi Valkeinen2024-09-161-8/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | omap_gem_new_dmabuf() creates the new gem object, and then takes and holds the omap_obj->lock for the rest of the function. This has two issues: - omap_gem_free_object(), which is called in the error paths, also takes the same lock, leading to deadlock - Even if the above wouldn't happen, in the error cases omap_gem_new_dmabuf() still unlocks omap_obj->lock, even after the omap_obj has already been freed. Furthermore, I don't think there's any reason to take the lock at all, as the object was just created and not yet shared with anyone else. To fix all this, drop taking the lock. Fixes: 3cbd0c587b12 ("drm/omap: gem: Replace struct_mutex usage with omap_obj private lock") Reported-by: Dan Carpenter <dan.carpenter@linaro.org> Closes: https://lore.kernel.org/all/511b99d7-aade-4f92-bd3e-63163a13d617@stanley.mountain/ Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240806-omapdrm-misc-fixes-v1-3-15d31aea0831@ideasonboard.com
* | drm/omap: Hide sparse warningsTomi Valkeinen2024-09-161-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sparse reports: drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:122:16: warning: incorrect type in argument 1 (different address spaces) drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:122:16: expected void const volatile [noderef] __iomem *addr drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:122:16: got unsigned int [usertype] *wa_dma_data drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:130:9: warning: incorrect type in argument 2 (different address spaces) drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:130:9: expected void volatile [noderef] __iomem *addr drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:130:9: got unsigned int [usertype] *wa_dma_data drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:414:9: warning: incorrect type in argument 1 (different address spaces) drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:414:9: expected void const volatile [noderef] __iomem *addr drivers/gpu/drm/omapdrm/omap_dmm_tiler.c:414:9: got unsigned int * These come from pieces of code which do essentially: p = dma_alloc_coherent() dma_transfer_to_p() readl(p) writel(x, p) dma_transfer_from_p() I think we would do just fine without readl() and writel(), accessing the memory without any extras, but ensuring that the necessary barriers are in place. But this code is for a legacy platform, has been working for ages, and it's doing work-arounds for hardware issues, and those hardware issues are very difficult to trigger... So I would just rather leave the code be as it is now. However, the warnings are not nice. Hide the warnings by a (__iomem void *) typecast. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202407311737.VsJ0Sr1w-lkp@intel.com/ Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240806-omapdrm-misc-fixes-v1-2-15d31aea0831@ideasonboard.com
* | drm/omap: Fix possible NULL dereferenceTomi Valkeinen2024-09-163-23/+9
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | smatch reports: drivers/gpu/drm/omapdrm/dss/base.c:176 omapdss_device_disconnect() error: we previously assumed 'src' could be null (see line 169) This code is mostly from a time when omapdrm had its own display device model. I can't honestly remember the details, and I don't think it's worth digging in deeply into that for a legacy driver. However, it looks like we only call omapdss_device_disconnect() and omapdss_device_connect() with NULL as the src parameter. We can thus drop the src parameter from both functions, and fix the smatch warning. I don't think omapdss_device_disconnect() ever gets NULL for the dst parameter (if it did, we'd crash soon after returning from the function), but I have kept the !dst check, just in case, but I added a WARN_ON() there. Also, if the dst parameter can be NULL, we can't always get the struct dss_device pointer from dst->dss (which is only used for a debug print). To make sure we can't hit that issue, do it similarly to the omapdss_device_connect() function: add 'struct dss_device *dss' as the first parameter, so that we always have it regardless of the dst. Fixes: 79107f274b2f ("drm/omap: Add support for drm_bridge") Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240806-omapdrm-misc-fixes-v1-1-15d31aea0831@ideasonboard.com
* Merge v6.11-rc7 into drm-nextSimona Vetter2024-09-111-0/+2
|\ | | | | | | | | | | | | Thomas needs 5a498d4d06d6 ("drm/fbdev-dma: Only install deferred I/O if necessary") in drm-misc, so start the backmerge cascade. Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch>
| * drm/bridge-connector: move to DRM_DISPLAY_HELPER moduleDmitry Baryshkov2024-09-031-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | drm_bridge_connector is a "leaf" driver, belonging to the display helper, rather than the "CRTC" drm_kms_helper module. Move the driver to the drm/display and add necessary Kconfig selection clauses. Suggested-by: Maxime Ripard <mripard@kernel.org> Acked-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240903-drm-bridge-connector-fix-hdmi-reset-v5-2-daebde6d9857@linaro.org Signed-off-by: Maxime Ripard <mripard@kernel.org>
* | Merge tag 'drm-misc-next-2024-08-29' of ↵Dave Airlie2024-08-301-0/+5
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://gitlab.freedesktop.org/drm/misc/kernel into drm-next drm-misc-next for v6.12: UAPI Changes: devfs: - support device numbers up to MINORBITS limit Core Changes: ci: - increase job timeout devfs: - use XArray for minor ids displayport: - mst: GUID improvements docs: - add fixes and cleanups panic: - optionally display QR code Driver Changes: amdgpu: - faster vblank disabling - GUID improvements gm12u320 - convert to struct drm_edid host1x: - fix syncpoint IRQ during resume - use iommu_paging_domain_alloc() imx: - ipuv3: convert to struct drm_edid omapdrm: - improve error handling panel: - add support for BOE TV101WUM-LL2 plus DT bindings - novatek-nt35950: improve error handling - nv3051d: improve error handling - panel-edp: add support for BOE NE140WUM-N6G; revert support for SDC ATNA45AF01 - visionox-vtdr6130: improve error handling; use devm_regulator_bulk_get_const() renesas: - rz-du: add support for RZ/G2UL plus DT bindings sti: - convert to struct drm_edid tegra: - gr3d: improve PM domain handling - convert to struct drm_edid Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20240829144654.GA145538@linux.fritz.box
| * | drm: omapdrm: Add missing check for alloc_ordered_workqueueMa Ke2024-08-261-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As it may return NULL pointer and cause NULL pointer dereference. Add check for the return value of alloc_ordered_workqueue. Cc: stable@vger.kernel.org Fixes: 2f95bc6d324a ("drm: omapdrm: Perform initialization/cleanup at probe/remove time") Signed-off-by: Ma Ke <make24@iscas.ac.cn> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240808061336.2796729-1-make24@iscas.ac.cn
* | | Merge v6.11-rc5 into drm-nextDaniel Vetter2024-08-271-0/+1
|\ \ \ | |/ / |/| / | |/ | | | | | | | | amdgpu pr conconflicts due to patches cherry-picked to -fixes, I might as well catch up with a backmerge and handle them all. Plus both misc and intel maintainers asked for a backmerge anyway. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| * drm/omap: add CONFIG_MMU dependencyArnd Bergmann2024-08-051-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Compile-testing with CONFIG_MMU disabled causes a link error in omapdrm: arm-linux-gnueabi-ld: drivers/gpu/drm/omapdrm/omap_gem.o: in function `omap_gem_fault_2d': omap_gem.c:(.text+0x36e): undefined reference to `vmf_insert_mixed' arm-linux-gnueabi-ld: drivers/gpu/drm/omapdrm/omap_gem.o: in function `omap_gem_fault': omap_gem.c:(.text+0x74a): undefined reference to `vmf_insert_mixed' Avoid this by adding a Kconfig dependency. Fixes: dc6fcaaba5a5 ("drm/omap: Allow build with COMPILE_TEST=y") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240719095942.3841009-1-arnd@kernel.org
* | gpu: drm: use for_each_endpoint_of_node()Kuninori Morimoto2024-08-071-2/+1
|/ | | | | | | | | | | We already have for_each_endpoint_of_node(), don't use of_graph_get_next_endpoint() directly. Replace it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/87jzh3lnts.wl-kuninori.morimoto.gx@renesas.com
* drm/omap: Restrict compile testing to PAGE_SIZE less than 64KBNathan Chancellor2024-07-121-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Prior to commit dc6fcaaba5a5 ("drm/omap: Allow build with COMPILE_TEST=y"), it was only possible to build the omapdrm driver with a 4KB page size. After that change, when the PAGE_SIZE is 64KB or larger, clang points out that the driver has some assumptions around the page size implicitly by passing PAGE_SIZE to a parameter with a type of u16: drivers/gpu/drm/omapdrm/omap_gem.c:758:7: error: implicit conversion from 'unsigned long' to 'u16' (aka 'unsigned short') changes value from 65536 to 0 [-Werror,-Wconstant-conversion] 757 | block = tiler_reserve_2d(fmt, omap_obj->width, omap_obj->height, | ~~~~~~~~~~~~~~~~ 758 | PAGE_SIZE); | ^~~~~~~~~ arch/powerpc/include/asm/page.h:25:34: note: expanded from macro 'PAGE_SIZE' 25 | #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) | ~~~~~~~~~~~~~^~~~~~~~~~~~~ drivers/gpu/drm/omapdrm/omap_gem.c:1504:44: error: implicit conversion from 'unsigned long' to 'u16' (aka 'unsigned short') changes value from 65536 to 0 [-Werror,-Wconstant-conversion] 1504 | block = tiler_reserve_2d(fmts[i], w, h, PAGE_SIZE); | ~~~~~~~~~~~~~~~~ ^~~~~~~~~ arch/powerpc/include/asm/page.h:25:34: note: expanded from macro 'PAGE_SIZE' 25 | #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT) | ~~~~~~~~~~~~~^~~~~~~~~~~~~ 2 errors generated. As there is a lot of use of a u16 type throughout this driver and it will only ever be run on hardware that has a 4KB page size, just restrict compile testing to when the page size is less than 64KB (as no other issues have been discussed and it keeps compile testing relatively more available). Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240620-omapdrm-restrict-compile-test-to-sub-64kb-page-size-v1-1-5e56de71ffca@kernel.org
* Merge drm/drm-next into drm-misc-nextMaxime Ripard2024-05-271-0/+1
|\ | | | | | | | | | | Let's start the new release cycle. Signed-off-by: Maxime Ripard <mripard@kernel.org>
| * Merge tag 'mm-stable-2024-05-17-19-19' of ↵Linus Torvalds2024-05-191-0/+1
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull mm updates from Andrew Morton: "The usual shower of singleton fixes and minor series all over MM, documented (hopefully adequately) in the respective changelogs. Notable series include: - Lucas Stach has provided some page-mapping cleanup/consolidation/ maintainability work in the series "mm/treewide: Remove pXd_huge() API". - In the series "Allow migrate on protnone reference with MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one test. - In their series "Memory allocation profiling" Kent Overstreet and Suren Baghdasaryan have contributed a means of determining (via /proc/allocinfo) whereabouts in the kernel memory is being allocated: number of calls and amount of memory. - Matthew Wilcox has provided the series "Various significant MM patches" which does a number of rather unrelated things, but in largely similar code sites. - In his series "mm: page_alloc: freelist migratetype hygiene" Johannes Weiner has fixed the page allocator's handling of migratetype requests, with resulting improvements in compaction efficiency. - In the series "make the hugetlb migration strategy consistent" Baolin Wang has fixed a hugetlb migration issue, which should improve hugetlb allocation reliability. - Liu Shixin has hit an I/O meltdown caused by readahead in a memory-tight memcg. Addressed in the series "Fix I/O high when memory almost met memcg limit". - In the series "mm/filemap: optimize folio adding and splitting" Kairui Song has optimized pagecache insertion, yielding ~10% performance improvement in one test. - Baoquan He has cleaned up and consolidated the early zone initialization code in the series "mm/mm_init.c: refactor free_area_init_core()". - Baoquan has also redone some MM initializatio code in the series "mm/init: minor clean up and improvement". - MM helper cleanups from Christoph Hellwig in his series "remove follow_pfn". - More cleanups from Matthew Wilcox in the series "Various page->flags cleanups". - Vlastimil Babka has contributed maintainability improvements in the series "memcg_kmem hooks refactoring". - More folio conversions and cleanups in Matthew Wilcox's series: "Convert huge_zero_page to huge_zero_folio" "khugepaged folio conversions" "Remove page_idle and page_young wrappers" "Use folio APIs in procfs" "Clean up __folio_put()" "Some cleanups for memory-failure" "Remove page_mapping()" "More folio compat code removal" - David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb functions to work on folis". - Code consolidation and cleanup work related to GUP's handling of hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2". - Rick Edgecombe has developed some fixes to stack guard gaps in the series "Cover a guard gap corner case". - Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series "mm/ksm: fix ksm exec support for prctl". - Baolin Wang has implemented NUMA balancing for multi-size THPs. This is a simple first-cut implementation for now. The series is "support multi-size THP numa balancing". - Cleanups to vma handling helper functions from Matthew Wilcox in the series "Unify vma_address and vma_pgoff_address". - Some selftests maintenance work from Dev Jain in the series "selftests/mm: mremap_test: Optimizations and style fixes". - Improvements to the swapping of multi-size THPs from Ryan Roberts in the series "Swap-out mTHP without splitting". - Kefeng Wang has significantly optimized the handling of arm64's permission page faults in the series "arch/mm/fault: accelerate pagefault when badaccess" "mm: remove arch's private VM_FAULT_BADMAP/BADACCESS" - GUP cleanups from David Hildenbrand in "mm/gup: consistently call it GUP-fast". - hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to use struct vm_fault". - selftests build fixes from John Hubbard in the series "Fix selftests/mm build without requiring "make headers"". - Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes the initialization code so that migration between different memory types works as intended. - David Hildenbrand has improved follow_pte() and fixed an errant driver in the series "mm: follow_pte() improvements and acrn follow_pte() fixes". - David also did some cleanup work on large folio mapcounts in his series "mm: mapcount for large folios + page_mapcount() cleanups". - Folio conversions in KSM in Alex Shi's series "transfer page to folio in KSM". - Barry Song has added some sysfs stats for monitoring multi-size THP's in the series "mm: add per-order mTHP alloc and swpout counters". - Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled and limit checking cleanups". - Matthew Wilcox has been looking at buffer_head code and found the documentation to be lacking. The series is "Improve buffer head documentation". - Multi-size THPs get more work, this time from Lance Yang. His series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes the freeing of these things. - Kemeng Shi has added more userspace-visible writeback instrumentation in the series "Improve visibility of writeback". - Kemeng Shi then sent some maintenance work on top in the series "Fix and cleanups to page-writeback". - Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the series "Improve anon_vma scalability for anon VMAs". Intel's test bot reported an improbable 3x improvement in one test. - SeongJae Park adds some DAMON feature work in the series "mm/damon: add a DAMOS filter type for page granularity access recheck" "selftests/damon: add DAMOS quota goal test" - Also some maintenance work in the series "mm/damon/paddr: simplify page level access re-check for pageout" "mm/damon: misc fixes and improvements" - David Hildenbrand has disabled some known-to-fail selftests ni the series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL". - memcg metadata storage optimizations from Shakeel Butt in "memcg: reduce memory consumption by memcg stats". - DAX fixes and maintenance work from Vishal Verma in the series "dax/bus.c: Fixups for dax-bus locking"" * tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits) memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault selftests: cgroup: add tests to verify the zswap writeback path mm: memcg: make alloc_mem_cgroup_per_node_info() return bool mm/damon/core: fix return value from damos_wmark_metric_value mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED selftests: cgroup: remove redundant enabling of memory controller Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT Docs/mm/damon/design: use a list for supported filters Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file selftests/damon: classify tests for functionalities and regressions selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None' selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts selftests/damon/_damon_sysfs: check errors from nr_schemes file reads mm/damon/core: initialize ->esz_bp from damos_quota_init_priv() selftests/damon: add a test for DAMOS quota goal ...
| | * fix missing vmalloc.h includesKent Overstreet2024-04-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch series "Memory allocation profiling", v6. Overview: Low overhead [1] per-callsite memory allocation profiling. Not just for debug kernels, overhead low enough to be deployed in production. Example output: root@moria-kvm:~# sort -rn /proc/allocinfo 127664128 31168 mm/page_ext.c:270 func:alloc_page_ext 56373248 4737 mm/slub.c:2259 func:alloc_slab_page 14880768 3633 mm/readahead.c:247 func:page_cache_ra_unbounded 14417920 3520 mm/mm_init.c:2530 func:alloc_large_system_hash 13377536 234 block/blk-mq.c:3421 func:blk_mq_alloc_rqs 11718656 2861 mm/filemap.c:1919 func:__filemap_get_folio 9192960 2800 kernel/fork.c:307 func:alloc_thread_stack_node 4206592 4 net/netfilter/nf_conntrack_core.c:2567 func:nf_ct_alloc_hashtable 4136960 1010 drivers/staging/ctagmod/ctagmod.c:20 [ctagmod] func:ctagmod_start 3940352 962 mm/memory.c:4214 func:alloc_anon_folio 2894464 22613 fs/kernfs/dir.c:615 func:__kernfs_new_node ... Usage: kconfig options: - CONFIG_MEM_ALLOC_PROFILING - CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT - CONFIG_MEM_ALLOC_PROFILING_DEBUG adds warnings for allocations that weren't accounted because of a missing annotation sysctl: /proc/sys/vm/mem_profiling Runtime info: /proc/allocinfo Notes: [1]: Overhead To measure the overhead we are comparing the following configurations: (1) Baseline with CONFIG_MEMCG_KMEM=n (2) Disabled by default (CONFIG_MEM_ALLOC_PROFILING=y && CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n) (3) Enabled by default (CONFIG_MEM_ALLOC_PROFILING=y && CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=y) (4) Enabled at runtime (CONFIG_MEM_ALLOC_PROFILING=y && CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n && /proc/sys/vm/mem_profiling=1) (5) Baseline with CONFIG_MEMCG_KMEM=y && allocating with __GFP_ACCOUNT (6) Disabled by default (CONFIG_MEM_ALLOC_PROFILING=y && CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=n) && CONFIG_MEMCG_KMEM=y (7) Enabled by default (CONFIG_MEM_ALLOC_PROFILING=y && CONFIG_MEM_ALLOC_PROFILING_BY_DEFAULT=y) && CONFIG_MEMCG_KMEM=y Performance overhead: To evaluate performance we implemented an in-kernel test executing multiple get_free_page/free_page and kmalloc/kfree calls with allocation sizes growing from 8 to 240 bytes with CPU frequency set to max and CPU affinity set to a specific CPU to minimize the noise. Below are results from running the test on Ubuntu 22.04.2 LTS with 6.8.0-rc1 kernel on 56 core Intel Xeon: kmalloc pgalloc (1 baseline) 6.764s 16.902s (2 default disabled) 6.793s (+0.43%) 17.007s (+0.62%) (3 default enabled) 7.197s (+6.40%) 23.666s (+40.02%) (4 runtime enabled) 7.405s (+9.48%) 23.901s (+41.41%) (5 memcg) 13.388s (+97.94%) 48.460s (+186.71%) (6 def disabled+memcg) 13.332s (+97.10%) 48.105s (+184.61%) (7 def enabled+memcg) 13.446s (+98.78%) 54.963s (+225.18%) Memory overhead: Kernel size: text data bss dec diff (1) 26515311 18890222 17018880 62424413 (2) 26524728 19423818 16740352 62688898 264485 (3) 26524724 19423818 16740352 62688894 264481 (4) 26524728 19423818 16740352 62688898 264485 (5) 26541782 18964374 16957440 62463596 39183 Memory consumption on a 56 core Intel CPU with 125GB of memory: Code tags: 192 kB PageExts: 262144 kB (256MB) SlabExts: 9876 kB (9.6MB) PcpuExts: 512 kB (0.5MB) Total overhead is 0.2% of total memory. Benchmarks: Hackbench tests run 100 times: hackbench -s 512 -l 200 -g 15 -f 25 -P baseline disabled profiling enabled profiling avg 0.3543 0.3559 (+0.0016) 0.3566 (+0.0023) stdev 0.0137 0.0188 0.0077 hackbench -l 10000 baseline disabled profiling enabled profiling avg 6.4218 6.4306 (+0.0088) 6.5077 (+0.0859) stdev 0.0933 0.0286 0.0489 stress-ng tests: stress-ng --class memory --seq 4 -t 60 stress-ng --class cpu --seq 4 -t 60 Results posted at: https://evilpiepirate.org/~kent/memalloc_prof_v4_stress-ng/ [2] https://lore.kernel.org/all/20240306182440.2003814-1-surenb@google.com/ This patch (of 37): The next patch drops vmalloc.h from a system header in order to fix a circular dependency; this adds it to all the files that were pulling it in implicitly. [kent.overstreet@linux.dev: fix arch/alpha/lib/memcpy.c] Link: https://lkml.kernel.org/r/20240327002152.3339937-1-kent.overstreet@linux.dev [surenb@google.com: fix arch/x86/mm/numa_32.c] Link: https://lkml.kernel.org/r/20240402180933.1663992-1-surenb@google.com [kent.overstreet@linux.dev: a few places were depending on sizes.h] Link: https://lkml.kernel.org/r/20240404034744.1664840-1-kent.overstreet@linux.dev [arnd@arndb.de: fix mm/kasan/hw_tags.c] Link: https://lkml.kernel.org/r/20240404124435.3121534-1-arnd@kernel.org [surenb@google.com: fix arc build] Link: https://lkml.kernel.org/r/20240405225115.431056-1-surenb@google.com Link: https://lkml.kernel.org/r/20240321163705.3067592-1-surenb@google.com Link: https://lkml.kernel.org/r/20240321163705.3067592-2-surenb@google.com Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Pasha Tatashin <pasha.tatashin@soleen.com> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* | | drm/omap: Allow build with COMPILE_TEST=yVille Syrjälä2024-05-081-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow omapdrm to be built with COMPILE_TEST=y for greater coverage. Builds fine on x86/x86_64 at least. Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240408170426.9285-16-ville.syrjala@linux.intel.com Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
* | | drm/omap: Open code phys_to_page()Ville Syrjälä2024-05-081-2/+2
|/ / | | | | | | | | | | | | | | | | | | | | phys_to_page() is not available on most architectures. Just open code it like msm does. Allows COMPILE_TEST=y builds of omapdrm on other architectures. Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240408170426.9285-15-ville.syrjala@linux.intel.com Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
* | drm/omap: add missing seq_file includeDave Airlie2024-04-261-0/+1
| | | | | | | | | | | | | | This fails to build with missing seq declerations. Fixes: 9e2b84fb6cd7 ("drm/print: drop include seq_file.h") Signed-off-by: Dave Airlie <airlied@redhat.com>
* | drm/omap: dmm_tiler: drop driver owner assignmentKrzysztof Kozlowski2024-04-101-1/+0
| | | | | | | | | | | | | | | | | | | | Core in platform_driver_register() already sets the .owner, so driver does not need to. Whatever is set here will be anyway overwritten by main driver calling platform_driver_register(). Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240330202804.83936-1-krzysztof.kozlowski@linaro.org
* | drm/omapdrm: Fix console with deferred opsTony Lindgren2024-03-182-7/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 95da53d63dcf ("drm/omapdrm: Use regular fbdev I/O helpers") stopped console from updating for command mode displays because there is no damage handling in fb_sys_write() unlike we had earlier in drm_fb_helper_sys_write(). Let's fix the issue by adding FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS and FB_DMAMEM_HELPERS_DEFERRED as suggested by Thomas. We cannot use the FB_DEFAULT_DEFERRED_OPS as fb_deferred_io_mmap() won't work properly for write-combine. Fixes: 95da53d63dcf ("drm/omapdrm: Use regular fbdev I/O helpers") Suggested-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240228063540.4444-3-tony@atomide.com
* | drm/omapdrm: Fix console by implementing fb_dirtyTony Lindgren2024-03-181-0/+12
|/ | | | | | | | | | | | | | | The framebuffer console stopped updating with commit f231af498c29 ("drm/fb-helper: Disconnect damage worker from update logic"). Let's fix the issue by implementing fb_dirty similar to what was done with commit 039a72ce7e57 ("drm/i915/fbdev: Implement fb_dirty for intel custom fb helper"). Fixes: f231af498c29 ("drm/fb-helper: Disconnect damage worker from update logic") Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240228063540.4444-2-tony@atomide.com
* drm/omap/hdmi5: switch to ->edid_read callbackJani Nikula2024-02-091-6/+6
| | | | | | | | Prefer using the struct drm_edid based callback and functions. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/da96653c111a7f989c7c804923968fa5f47c6b5a.1706038510.git.jani.nikula@intel.com
* drm/omap/hdmi4: switch to ->edid_read callbackJani Nikula2024-02-091-7/+15
| | | | | | | | Prefer using the struct drm_edid based callback and functions. Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/4c9b24a399e8f305698f8fe5ebd687bfd6ce2e59.1706038510.git.jani.nikula@intel.com
* drm/omapdrm: Improve check for contiguous buffersAndrew Davis2023-12-011-4/+10
| | | | | | | | | | While a scatter-gather table having only 1 entry does imply it is contiguous, it is a logic error to assume the inverse. Tables can have more than 1 entry and still be contiguous. Use a proper check here. Signed-off-by: Andrew Davis <afd@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20231113205501.616927-1-afd@ti.com
* drm: Use device_get_match_data()Rob Herring2023-11-272-4/+5
| | | | | | | | | | | | | Use preferred device_get_match_data() instead of of_match_device() to get the driver match data in a single step. With this, adjust the includes to explicitly include the correct headers. That also serves as preparation to remove implicit includes within the DT headers (of_device.h in particular). Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au> Link: https://lore.kernel.org/r/20231020125214.2930329-1-robh@kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
* Revert "drm/omapdrm: Annotate dma-fence critical section in commit path"Tomi Valkeinen2023-10-311-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 250aa22920cd5d956a5d3e9c6a43d671c2bae217. The DMA-fence annotations cause a lockdep warning (see below). As per https://patchwork.freedesktop.org/patch/462170/ it sounds like the annotations don't work correctly. ====================================================== WARNING: possible circular locking dependency detected 6.5.0-rc2+ #2 Not tainted ------------------------------------------------------ kmstest/219 is trying to acquire lock: c4705838 (&hdmi->lock){+.+.}-{3:3}, at: hdmi5_bridge_mode_set+0x1c/0x50 but task is already holding lock: c11e1128 (dma_fence_map){++++}-{0:0}, at: omap_atomic_commit_tail+0x14/0xbc which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (dma_fence_map){++++}-{0:0}: __dma_fence_might_wait+0x48/0xb4 dma_resv_lockdep+0x1b8/0x2bc do_one_initcall+0x68/0x3b0 kernel_init_freeable+0x260/0x34c kernel_init+0x14/0x140 ret_from_fork+0x14/0x28 -> #1 (fs_reclaim){+.+.}-{0:0}: fs_reclaim_acquire+0x70/0xa8 __kmem_cache_alloc_node+0x3c/0x368 kmalloc_trace+0x28/0x58 _drm_do_get_edid+0x7c/0x35c hdmi5_bridge_get_edid+0xc8/0x1ac drm_bridge_connector_get_modes+0x64/0xc0 drm_helper_probe_single_connector_modes+0x170/0x528 drm_client_modeset_probe+0x208/0x1334 __drm_fb_helper_initial_config_and_unlock+0x30/0x548 omap_fbdev_client_hotplug+0x3c/0x6c drm_client_register+0x58/0x94 pdev_probe+0x544/0x6b0 platform_probe+0x58/0xbc really_probe+0xd8/0x3fc __driver_probe_device+0x94/0x1f4 driver_probe_device+0x2c/0xc4 __device_attach_driver+0xa4/0x11c bus_for_each_drv+0x84/0xdc __device_attach+0xac/0x20c bus_probe_device+0x8c/0x90 device_add+0x588/0x7e0 platform_device_add+0x110/0x24c platform_device_register_full+0x108/0x15c dss_bind+0x90/0xc0 try_to_bring_up_aggregate_device+0x1e0/0x2c8 __component_add+0xa4/0x174 hdmi5_probe+0x1c8/0x270 platform_probe+0x58/0xbc really_probe+0xd8/0x3fc __driver_probe_device+0x94/0x1f4 driver_probe_device+0x2c/0xc4 __device_attach_driver+0xa4/0x11c bus_for_each_drv+0x84/0xdc __device_attach+0xac/0x20c bus_probe_device+0x8c/0x90 deferred_probe_work_func+0x8c/0xd8 process_one_work+0x2ac/0x6e4 worker_thread+0x30/0x4ec kthread+0x100/0x124 ret_from_fork+0x14/0x28 -> #0 (&hdmi->lock){+.+.}-{3:3}: __lock_acquire+0x145c/0x29cc lock_acquire.part.0+0xb4/0x258 __mutex_lock+0x90/0x950 mutex_lock_nested+0x1c/0x24 hdmi5_bridge_mode_set+0x1c/0x50 drm_bridge_chain_mode_set+0x48/0x5c crtc_set_mode+0x188/0x1d0 omap_atomic_commit_tail+0x2c/0xbc commit_tail+0x9c/0x188 drm_atomic_helper_commit+0x158/0x18c drm_atomic_commit+0xa4/0xe8 drm_mode_atomic_ioctl+0x9a4/0xc38 drm_ioctl+0x210/0x4a8 sys_ioctl+0x138/0xf00 ret_fast_syscall+0x0/0x1c other info that might help us debug this: Chain exists of: &hdmi->lock --> fs_reclaim --> dma_fence_map Possible unsafe locking scenario: CPU0 CPU1 ---- ---- rlock(dma_fence_map); lock(fs_reclaim); lock(dma_fence_map); lock(&hdmi->lock); *** DEADLOCK *** 3 locks held by kmstest/219: #0: f1011de4 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_mode_atomic_ioctl+0xf0/0xc38 #1: c47059c8 (crtc_ww_class_mutex){+.+.}-{3:3}, at: modeset_lock+0xf8/0x230 #2: c11e1128 (dma_fence_map){++++}-{0:0}, at: omap_atomic_commit_tail+0x14/0xbc stack backtrace: CPU: 1 PID: 219 Comm: kmstest Not tainted 6.5.0-rc2+ #2 Hardware name: Generic DRA74X (Flattened Device Tree) unwind_backtrace from show_stack+0x10/0x14 show_stack from dump_stack_lvl+0x58/0x70 dump_stack_lvl from check_noncircular+0x164/0x198 check_noncircular from __lock_acquire+0x145c/0x29cc __lock_acquire from lock_acquire.part.0+0xb4/0x258 lock_acquire.part.0 from __mutex_lock+0x90/0x950 __mutex_lock from mutex_lock_nested+0x1c/0x24 mutex_lock_nested from hdmi5_bridge_mode_set+0x1c/0x50 hdmi5_bridge_mode_set from drm_bridge_chain_mode_set+0x48/0x5c drm_bridge_chain_mode_set from crtc_set_mode+0x188/0x1d0 crtc_set_mode from omap_atomic_commit_tail+0x2c/0xbc omap_atomic_commit_tail from commit_tail+0x9c/0x188 commit_tail from drm_atomic_helper_commit+0x158/0x18c drm_atomic_helper_commit from drm_atomic_commit+0xa4/0xe8 drm_atomic_commit from drm_mode_atomic_ioctl+0x9a4/0xc38 drm_mode_atomic_ioctl from drm_ioctl+0x210/0x4a8 drm_ioctl from sys_ioctl+0x138/0xf00 sys_ioctl from ret_fast_syscall+0x0/0x1c Exception stack(0xf1011fa8 to 0xf1011ff0) 1fa0: 00466d58 be9ab510 00000003 c03864bc be9ab510 be9ab4e0 1fc0: 00466d58 be9ab510 c03864bc 00000036 00466ef0 00466fc0 00467020 00466f20 1fe0: b6bc7ef4 be9ab4d0 b6bbbb00 b6cb2cc0 Fixes: 250aa22920cd ("drm/omapdrm: Annotate dma-fence critical section in commit path") Reviewed-by: Aradhya Bhatia <a-bhatia1@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230920-dma-fence-annotation-revert-v1-2-7ebf6f7f5bf6@ideasonboard.com
* drm: Call drm_atomic_helper_shutdown() at shutdown time for misc driversDouglas Anderson2023-09-211-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on grepping through the source code these drivers appear to be missing a call to drm_atomic_helper_shutdown() at system shutdown time. Among other things, this means that if a panel is in use that it won't be cleanly powered off at system shutdown time. The fact that we should call drm_atomic_helper_shutdown() in the case of OS shutdown/restart comes straight out of the kernel doc "driver instance overview" in drm_drv.c. All of the drivers in this patch were fairly straightforward to fix since they already had a call to drm_atomic_helper_shutdown() at remove/unbind time but were just lacking one at system shutdown. The only hitch is that some of these drivers use the component model to register/unregister their DRM devices. The shutdown callback is part of the original device. The typical solution here, based on how other DRM drivers do this, is to keep track of whether the device is bound based on drvdata. In most cases the drvdata is the drm_device, so we can just make sure it is NULL when the device is not bound. In some drivers, this required minor code changes. To make things simpler, drm_atomic_helper_shutdown() has been modified to consider a NULL drm_device as a noop in the patch ("drm/atomic-helper: drm_atomic_helper_shutdown(NULL) should be a noop"). Suggested-by: Maxime Ripard <mripard@kernel.org> Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Tested-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Acked-by: Maxime Ripard <mripard@kernel.org> Tested-by: Jernej Skrabec <jernej.skrabec@gmail.com> Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com> Reviewed-by: Sui Jingfeng <suijingfeng@loongson.cn> Tested-by: Sui Jingfeng <suijingfeng@loongson.cn> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230901163944.RFT.2.I9115e5d094a43e687978b0699cc1fe9f2a3452ea@changeid
* fbdev: Use _DMAMEM_ infix for DMA-memory helpersThomas Zimmermann2023-07-312-3/+3
| | | | | | | | | | | | Change the infix for fbdev's DMA-memory helpers from _DMA_ to _DMAMEM_. The helpers perform operations within DMA-able memory, but they don't perform DMA operations. Naming should make this clear. Adapt all users. No functional changes. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Helge Deller <deller@gmx.de> Link: https://patchwork.freedesktop.org/patch/msgid/20230729193157.15446-4-tzimmermann@suse.de
* drm/omapdrm: Set fbdev FBINFO_VIRTFB flagThomas Zimmermann2023-07-241-0/+1
| | | | | | | | | | | | | | | Mark the framebuffer with FBINFO_VIRTFB. The framebuffer range is in DMA-able memory and should be accessed with the CPU's regular memory ops. v2: * drop FBINFO_DEFAULT Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Maxime Ripard <mripard@kernel.org> Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230707083422.18691-11-tzimmermann@suse.de
* drm/omapdrm: Use GEM mmap for fbdev emulationThomas Zimmermann2023-07-242-3/+14
| | | | | | | | | | | | | | | | | | The fbdev emulation currently uses fbdev's default mmap code, which has been written for I/O memory. Provide an mmap that uses GEM's mmap infrastructure. Utilize fine-grained fbdev macros to initialize struct fb_ops. The macros set the read/write and the draw callbacks for DMA memory. Set the fb_mmap callback to omapdrm's new mmap helper. Also select the correct Kconfig token for fbdev's DMA helpers. Note that the DMA helpers are the same as for system memory. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Maxime Ripard <mripard@kernel.org> Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230707083422.18691-10-tzimmermann@suse.de
* drm/omapdrm: Set VM flags in GEM-object mmap functionThomas Zimmermann2023-07-244-38/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the mmap callback in struct drm_gem_object_funcs to set the VM flags. Replace a number of mmap helpers in omapdrm with their GEM helper counterparts. Generate DRM's file-operations instance with GEM's DEFINE_DRM_GEM_FOPS. The omapdrm driver uses DRM's drm_gem_mmap() helper to prepare the VMA structure. It then modifies the resulting VMA state in its own helper omap_gem_mmap_obj(). The patch improves this by setting up the VMA in the mmap callback in drm_gem_object_funcs, which is called from within drm_gem_mmap(). Omapdrm's omap_gem_mmap() and omap_gem_mmap() can then be removed from the driver. A call to drm_gem_mmap() is sufficient for the mmap operation. Finally, with the omap functions gone, the drivers file_ops in omapdriver_fops can be generated with DEFINE_DRM_GEM_FOPS, which sets DRM's default helpers. v2: * detailed commit message (Javier) * do not set VM_PFNMAP Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Maxime Ripard <mripard@kernel.org> Cc: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230707083422.18691-9-tzimmermann@suse.de
* Merge tag 'drm-misc-next-2023-07-13' of ↵Daniel Vetter2023-07-179-34/+17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for v6.6: UAPI Changes: * fbdev: * Make fbdev userspace interfaces optional; only leaves the framebuffer console active * prime: * Support dma-buf self-import for all drivers automatically: improves support for many userspace compositors Cross-subsystem Changes: * backlight: * Fix interaction with fbdev in several drivers * base: Convert struct platform.remove to return void; part of a larger, tree-wide effort * dma-buf: Acquire reservation lock for mmap() in exporters; part of an on-going effort to simplify locking around dma-bufs * fbdev: * Use Linux device instead of fbdev device in many places * Use deferred-I/O helper macros in various drivers * i2c: Convert struct i2c from .probe_new to .probe; part of a larger, tree-wide effort * video: * Avoid including <linux/screen_info.h> Core Changes: * atomic: * Improve logging * prime: * Remove struct drm_driver.gem_prime_mmap plus driver updates: all drivers now implement this callback with drm_gem_prime_mmap() * gem: * Support execution contexts: provides locking over multiple GEM objects * ttm: * Support init_on_free * Swapout fixes Driver Changes: * accel: * ivpu: MMU updates; Support debugfs * ast: * Improve device-model detection * Cleanups * bridge: * dw-hdmi: Improve support for YUV420 bus format * dw-mipi-dsi: Fix enable/disable of DSI controller * lt9611uxc: Use MODULE_FIRMWARE() * ps8640: Remove broken EDID code * samsung-dsim: Fix command transfer * tc358764: Handle HS/VS polarity; Use BIT() macro; Various cleanups * Cleanups * ingenic: * Kconfig REGMAP fixes * loongson: * Support display controller * mgag200: * Minor fixes * mxsfb: * Support disabling overlay planes * nouveau: * Improve VRAM detection * Various fixes and cleanups * panel: * panel-edp: Support AUO B116XAB01.4 * Support Visionox R66451 plus DT bindings * Cleanups * ssd130x: * Support per-controller default resolution plus DT bindings * Reduce memory-allocation overhead * Cleanups * tidss: * Support TI AM625 plus DT bindings * Implement new connector model plus driver updates * vkms * Improve write-back support * Documentation fixes Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20230713090830.GA23281@linux-uq9g
| * drm: Clear fd/handle callbacks in struct drm_driverThomas Zimmermann2023-06-261-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clear all assignments of struct drm_driver's fd/handle callbacks to drm_gem_prime_fd_to_handle() and drm_gem_prime_handle_to_fd(). These functions are called by default. Add a TODO item to convert vmwgfx to the defaults as well. v2: * remove TODO item (Zack) * also update amdgpu's amdgpu_partition_driver Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Simon Ser <contact@emersion.fr> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Jeffrey Hugo <quic_jhugo@quicinc.com> # qaic Link: https://patchwork.freedesktop.org/patch/msgid/20230620080252.16368-3-tzimmermann@suse.de
| * drm: Don't assert held reservation lock for dma-buf mmappingDmitry Osipenko2023-06-211-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't assert held dma-buf reservation lock on memory mapping of exported buffer. We're going to change dma-buf mmap() locking policy such that exporters will have to handle the lock. The previous locking policy caused deadlock problem for DRM drivers in a case of self-imported dma-bufs once these drivers are moved to use reservation lock universally. The problem is solved by moving the lock down to exporters. This patch prepares DRM drivers for the locking policy update. Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> Acked-by: Christian König <christian.koenig@amd.com> Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-2-dmitry.osipenko@collabora.com Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-3-dmitry.osipenko@collabora.com Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-4-dmitry.osipenko@collabora.com Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-2-dmitry.osipenko@collabora.com Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-3-dmitry.osipenko@collabora.com Link: https://patchwork.freedesktop.org/patch/msgid/20230529223935.2672495-4-dmitry.osipenko@collabora.com
| * drm/omap: Convert to platform remove callback returning voidUwe Kleine-König2023-06-088-30/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is (mostly) ignored and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Trivially convert the omap drm driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20230507162616.1368908-35-u.kleine-koenig@pengutronix.de
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-04 06:30:40 +0000