- 23 Feb, 2024 4 commits
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Rob Clark authored
We need to bail out before adding/removing devices if we are going to -EPROBE_DEFER. Otherwise boot can get stuck in a probe deferral loop due to a long-standing issue in driver core (see commit fbc35b45 ("Add documentation on meaning of -EPROBE_DEFER")). Deregistering the altmode child device can potentially also trigger bugs in the DRM bridge implementation, which does not expect bridges to go away. [DB: slightly fixed commit message by adding the word 'commit'] Suggested-by:
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by:
Rob Clark <robdclark@chromium.org> Link: https://lore.kernel.org/r/20231213210644.8702-1-robdclark@gmail.com [ johan: rebase on 6.8-rc4, amend commit message and mention DRM ] Fixes: 58ef4ece ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver") Cc: <stable@vger.kernel.org> # 6.3 Cc: Bjorn Andersson <andersson@kernel.org> Signed-off-by:
Johan Hovold <johan+linaro@kernel.org> Reviewed-by:
Bjorn Andersson <andersson@kernel.org> Reviewed-by:
Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by:
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Johan Hovold authored
A recent DRM series purporting to simplify support for "transparent bridges" and handling of probe deferrals ironically exposed a use-after-free issue on pmic_glink_altmode probe deferral. This has manifested itself as the display subsystem occasionally failing to initialise and NULL-pointer dereferences during boot of machines like the Lenovo ThinkPad X13s. Specifically, the dp-hpd bridge is currently registered before all resources have been acquired which means that it can also be deregistered on probe deferrals. In the meantime there is a race window where the new aux bridge driver (or PHY driver previously) may have looked up the dp-hpd bridge and stored a (non-reference-counted) pointer to the bridge which is about to be deallocated. When the display controller is later initialised, this triggers a use-after-free when attaching the bridges: dp -> aux -> dp-hpd (freed) which may, for example, result in the freed bridge failing to attach: [drm:drm_bridge_attach [drm]] *ERROR* failed to attach bridge /soc@0/phy@88eb000 to encoder TMDS-31: -16 or a NULL-pointer dereference: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 ... Call trace: drm_bridge_attach+0x70/0x1a8 [drm] drm_aux_bridge_attach+0x24/0x38 [aux_bridge] drm_bridge_attach+0x80/0x1a8 [drm] dp_bridge_init+0xa8/0x15c [msm] msm_dp_modeset_init+0x28/0xc4 [msm] The DRM bridge implementation is clearly fragile and implicitly built on the assumption that bridges may never go away. In this case, the fix is to move the bridge registration in the pmic_glink_altmode driver to after all resources have been looked up. Incidentally, with the new dp-hpd bridge implementation, which registers child devices, this is also a requirement due to a long-standing issue in driver core that can otherwise lead to a probe deferral loop (see commit fbc35b45 ("Add documentation on meaning of -EPROBE_DEFER")). [DB: slightly fixed commit message by adding the word 'commit'] Fixes: 080b4e24 ("soc: qcom: pmic_glink: Introduce altmode support") Fixes: 2bcca96a ("soc: qcom: pmic-glink: switch to DRM_AUX_HPD_BRIDGE") Cc: <stable@vger.kernel.org> # 6.3 Cc: Bjorn Andersson <andersson@kernel.org> Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Signed-off-by:
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Johan Hovold authored
Combining allocation and registration is an anti-pattern that should be avoided. Add two new functions for allocating and registering an dp-hpd bridge with a proper 'devm' prefix so that it is clear that these are device managed interfaces. devm_drm_dp_hpd_bridge_alloc() devm_drm_dp_hpd_bridge_add() The new interface will be used to fix a use-after-free bug in the Qualcomm PMIC GLINK driver and may prevent similar issues from being introduced elsewhere. The existing drm_dp_hpd_bridge_register() is reimplemented using the above and left in place for now. Signed-off-by:
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Johan Hovold authored
The two device node references taken during allocation need to be dropped when the auxiliary device is freed. Fixes: 6914968a ("drm/bridge: properly refcount DT nodes in aux bridge drivers") Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Cc: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by:
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- 22 Feb, 2024 4 commits
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Mikko Perttunen authored
On Tegra186, secure world applications may need to access host1x during suspend/resume, and rely on the kernel to keep Host1x out of reset during the suspend cycle. As such, as a quirk, skip asserting Host1x's reset on Tegra186. We don't need to keep the clocks enabled, as BPMP ensures the clock stays on while Host1x is being used. On newer SoC's, the reset line is inaccessible, so there is no need for the quirk. Fixes: b7c00cdf ("gpu: host1x: Enable system suspend callbacks") Signed-off-by:
Mikko Perttunen <mperttunen@nvidia.com> Reviewed-by:
Jon Hunter <jonathanh@nvidia.com> Tested-by:
Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240222010517.1573931-1-cyndis@kapsi.fi
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Erik Kurzinger authored
During syncobj_eventfd_entry_func, dma_fence_chain_find_seqno may set the fence to NULL if the given seqno is signaled and a later seqno has already been submitted. In that case, the eventfd should be signaled immediately which currently does not happen. This is a similar issue to the one addressed by commit b19926d4 ("drm/syncobj: Deal with signalled fences in drm_syncobj_find_fence."). As a fix, if the return value of dma_fence_chain_find_seqno indicates success but it sets the fence to NULL, we will assign a stub fence to ensure the following code still signals the eventfd. v1 -> v2: assign a stub fence instead of signaling the eventfd Signed-off-by:
Erik Kurzinger <ekurzinger@nvidia.com> Fixes: c7a47229 ("drm/syncobj: add IOCTL to register an eventfd") Signed-off-by:
Simon Ser <contact@emersion.fr> Link: https://patchwork.freedesktop.org/patch/msgid/20240221184527.37667-1-ekurzinger@nvidia.com
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Erik Kurzinger authored
When waiting for a syncobj timeline point whose fence has not yet been submitted with the WAIT_FOR_SUBMIT flag, a callback is registered using drm_syncobj_fence_add_wait and the thread is put to sleep until the timeout expires. If the fence is submitted before then, drm_syncobj_add_point will wake up the sleeping thread immediately which will proceed to wait for the fence to be signaled. However, if the WAIT_AVAILABLE flag is used instead, drm_syncobj_fence_add_wait won't get called, meaning the waiting thread will always sleep for the full timeout duration, even if the fence gets submitted earlier. If it turns out that the fence *has* been submitted by the time it eventually wakes up, it will still indicate to userspace that the wait completed successfully (it won't return -ETIME), but it will have taken much longer than it should have. To fix this, we must call drm_syncobj_fence_add_wait if *either* the WAIT_FOR_SUBMIT flag or the WAIT_AVAILABLE flag is set. The only difference being that with WAIT_FOR_SUBMIT we will also wait for the fence to be signaled after it has been submitted while with WAIT_AVAILABLE we will return immediately. IGT test patch: https://lists.freedesktop.org/archives/igt-dev/2024-January/067537.html v1 -> v2: adjust lockdep_assert_none_held_once condition (cherry picked from commit 8c44ea81) Fixes: 01d6c357 ("drm/syncobj: add support for timeline point wait v8") Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by:
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Thomas Hellström authored
If caching mode change fails due to, for example, OOM we free the allocated pages in a two-step process. First the pages for which the caching change has already succeeded. Secondly the pages for which a caching change did not succeed. However the second step was incorrectly freeing the pages already freed in the first step. Fix. Signed-off-by:
Thomas Hellström <thomas.hellstrom@linux.intel.com> Fixes: 379989e7 ("drm/ttm/pool: Fix ttm_pool_alloc error path") Cc: Christian König <christian.koenig@amd.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Christian Koenig <christian.koenig@amd.com> Cc: Huang Rui <ray.huang@amd.com> Cc: dri-devel@lists.freedesktop.org Cc: <stable@vger.kernel.org> # v6.4+ Reviewed-by:
Matthew Auld <matthew.auld@intel.com> Reviewed-by:
Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240221073324.3303-1-thomas.hellstrom@linux.intel.com
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- 21 Feb, 2024 1 commit
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Javier Martinez Canillas authored
Commit 55bffc81 ("fbdev: Split frame buffer support in FB and FB_CORE symbols") added a new FB_CORE Kconfig symbol, that can be enabled to only have fbcon/VT and DRM fbdev emulation, but without support for any legacy fbdev driver. Unfortunately, it missed to change the CONFIG_FB in arch/sparc makefiles, which leads to the following linking error in some sparc64 configurations: sparc64-linux-ld: drivers/video/fbdev/core/fbcon.o: in function `fbcon_fb_registered': >> fbcon.c:(.text+0x4f60): undefined reference to `fb_is_primary_device' Fixes: 55bffc81 ("fbdev: Split frame buffer support in FB and FB_CORE symbols") Reported-by:
kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/r/202401290306.IV8rhJ02-lkp@intel.com/Signed-off-by:
Javier Martinez Canillas <javierm@redhat.com> Reviewed-by:
Thomas Zimmermann <tzimmermann@suse.de> Acked-by:
Arnd Bergmann <arnd@arndb.de> Cc: <stable@vger.kernel.org> # v6.6+ Signed-off-by:
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- 20 Feb, 2024 1 commit
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Andrzej Kacprowski authored
There is no point in requesting 1 tile on VPU40xx as the FW will probably need more tiles to run workloads, so it will have to reconfigure PLL anyway. Don't enable any tiles and allow the FW to perform initial tile configuration. This improves NPU boot stability as the tiles are always enabled only by the FW from the same initial state. Fixes: 79cdc56c ("accel/ivpu: Add initial support for VPU 4") Cc: stable@vger.kernel.org Signed-off-by:
Andrzej Kacprowski <Andrzej.Kacprowski@intel.com> Signed-off-by:
Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com> Reviewed-by:
Jeffrey Hugo <quic_jhugo@quicinc.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240220131624.1447813-1-jacek.lawrynowicz@linux.intel.com
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- 19 Feb, 2024 2 commits
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Matthew Auld authored
Doesn't seem to compile on 32b, presumably due to u64 mod/division. Simplest is to just switch over to u32 here. Also make print modifiers consistent with that. Fixes: a64056bb ("drm/tests/drm_buddy: add alloc_contiguous test") Reported-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Martin Blumenstingl authored
Stop calling drm_bridge_remove() for bridges allocated/managed by other drivers in the remove paths of meson_encoder_{cvbs,dsi,hdmi}. drm_bridge_remove() unregisters the bridge so it cannot be used anymore. Doing so for bridges we don't own can lead to the video pipeline not being able to come up after -EPROBE_DEFER of the VPU because we're unregistering a bridge that's managed by another driver. The other driver doesn't know that we have unregistered it's bridge and on subsequent .probe() we're not able to find those bridges anymore (since nobody re-creates them). This fixes probe errors on Meson8b boards with the CVBS outputs enabled. Fixes: 09847723 ("drm/meson: remove drm bridges at aggregate driver unbind time") Fixes: 42dcf15f ("drm/meson: add DSI encoder") Cc: <stable@vger.kernel.org> Reported-by:Steve Morvai <stevemorvai@hotmail.com> Signed-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Reviewed-by:
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- 16 Feb, 2024 3 commits
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Dan Carpenter authored
If gf100_bar_new_() fails then "bar" is not initialized. Fixes: 5bf02571 ("drm/nouveau/mmu/r535: initial support") Signed-off-by:
Dan Carpenter <dan.carpenter@linaro.org> Signed-off-by:
Danilo Krummrich <dakr@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/dab21df7-4d90-4479-97d8-97e5d228c714@moroto.mountain
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Arnd Bergmann authored
clang-16 warns about casting between incompatible function types: drivers/gpu/drm/nouveau/nvkm/subdev/bios/shadow.c:161:10: error: cast from 'void (*)(const struct firmware *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict] 161 | .fini = (void(*)(void *))release_firmware, This one was done to use the generic shadow_fw_release() function as a callback for struct nvbios_source. Change it to use the same prototype as the other five instances, with a trivial helper function that actually calls release_firmware. Fixes: 70c0f263 ("drm/nouveau/bios: pull in basic vbios subdev, more to come later") Signed-off-by:
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Arunpravin Paneer Selvam authored
Remove the duplicate list_splice_tail call when the total_allocated < size condition is true. Cc: <stable@vger.kernel.org> # 6.7+ Fixes: 8746c6c9 ("drm/buddy: Fix alloc_range() error handling code") Reported-by:
Bert Karwatzki <spasswolf@web.de> Signed-off-by:
Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> Reviewed-by:
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- 14 Feb, 2024 2 commits
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Matthew Auld authored
Sanity check DRM_BUDDY_CONTIGUOUS_ALLOCATION. v2: Fix checkpatch warnings. Signed-off-by:
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Arunpravin Paneer Selvam authored
Few users have observed display corruption when they boot the machine to KDE Plasma or playing games. We have root caused the problem that whenever alloc_range() couldn't find the required memory blocks the function was returning SUCCESS in some of the corner cases. The right approach would be if the total allocated size is less than the required size, the function should return -ENOSPC. Cc: <stable@vger.kernel.org> # 6.7+ Fixes: 0a1844bf ("drm/buddy: Improve contiguous memory allocation") Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3097Tested-by:
Mario Limonciello <mario.limonciello@amd.com> Link: https://patchwork.kernel.org/project/dri-devel/patch/20240207174456.341121-1-Arunpravin.PaneerSelvam@amd.com/Acked-by:
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- 13 Feb, 2024 3 commits
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Harshit Mogalapalli authored
Unlock before returning on the error path. Fixes: 5a028e8f ("drm/rockchip: vop2: Add support for rk3588") Signed-off-by:
Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> Reviewed-by:
Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by:
Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20240119190841.1619443-1-harshit.m.mogalapalli@oracle.com
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Rob Clark authored
DRM_MODESET_LOCK_ALL_BEGIN() has a hidden trap-door (aka retry loop), which means we can't rely too much on variable initializers. Fixes: 6e455f5d ("drm/crtc: fix uninitialized variable use") Signed-off-by:
Abhinav Kumar <quic_abhinavk@quicinc.com> Reviewed-by:
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Philip Yang authored
Without unsigned long typecast, the size is passed in as zero if page array size >= 4GB, nr_pages >= 0x100000, then sg list converted will have the first and the last chunk lost. Signed-off-by:
Philip Yang <Philip.Yang@amd.com> Acked-by:
Felix Kuehling <Felix.Kuehling@amd.com> Reviewed-by:
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- 12 Feb, 2024 4 commits
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Arnd Bergmann authored
The conversion to kvcalloc() mixed up the object size and count arguments, causing a warning: drivers/gpu/drm/nouveau/nouveau_svm.c: In function 'nouveau_svm_fault_buffer_ctor': drivers/gpu/drm/nouveau/nouveau_svm.c:1010:40: error: 'kvcalloc' sizes specified with 'sizeof' in the earlier argument and not in the later argument [-Werror=calloc-transposed-args] 1010 | buffer->fault = kvcalloc(sizeof(*buffer->fault), buffer->entries, GFP_KERNEL); | ^ drivers/gpu/drm/nouveau/nouveau_svm.c:1010:40: note: earlier argument should specify number of elements, later size of each element The behavior is still correct aside from the warning, but fixing it avoids the warnings and can help the compiler track the individual objects better. Fixes: 71e4bbca ("nouveau/svm: Use kvcalloc() instead of kvzalloc()") Signed-off-by: -
Danilo Krummrich authored
Omit to create scheduler instances when using the legacy uAPI. When using the legacy NOUVEAU_GEM_PUSHBUF ioctl no scheduler instance is required, hence omit creating scheduler instances in nouveau_abi16_ioctl_channel_alloc(). Tested-by:
Timur Tabi <ttabi@nvidia.com> Reviewed-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
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Danilo Krummrich authored
nouveau_abi16_ioctl_channel_alloc() and nouveau_cli_init() simply call their corresponding *_fini() counterpart. This can lead to nouveau_sched_fini() being called without struct nouveau_sched ever being initialized in the first place. Instead of embedding struct nouveau_sched into struct nouveau_cli and struct nouveau_chan_abi16, allocate struct nouveau_sched separately, such that we can check for the corresponding pointer to be NULL in the particular *_fini() functions. It makes sense to allocate struct nouveau_sched separately anyway, since in a subsequent commit we can also avoid to allocate a struct nouveau_sched in nouveau_abi16_ioctl_channel_alloc() at all, if the VM_BIND uAPI has been disabled due to the legacy uAPI being used. Fixes: 5f03a507 ("drm/nouveau: implement 1:1 scheduler - entity relationship") Reported-by:
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Jacek Lawrynowicz authored
Issue IP reset before shutdown in order to complete all upstream requests to the SOC. Without this DevTLB is complaining about incomplete transactions and NPU cannot resume from suspend. This problem is only happening on recent IFWI releases. IP reset in rare corner cases can mess up PCI configuration, so save it before the reset. After this happens it is also impossible to issue PLL requests and D0->D3->D0 cycle is needed to recover the NPU. Add WP 0 request on power up, so the PUNIT is always notified about NPU reset. Use D0/D3 cycle for recovery as it can recover from failed IP reset and FLR cannot. Fixes: 3f7c0634 ("accel/ivpu/37xx: Fix hangs related to MMIO reset") Signed-off-by:
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- 06 Feb, 2024 6 commits
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Grzegorz Trzebiatowski authored
Add DRM_IVPU_JOB_STATUS_ABORTED to indicate that the job was aborted by the driver due to e.g. TDR or user context MMU faults. This will help UMD and tests distinguish if job was aborted by the FW or the driver. Signed-off-by:
Grzegorz Trzebiatowski <grzegorz.trzebiatowski@intel.com> Signed-off-by:
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Krystian Pradzynski authored
This parameter was never used by the 40xx FW. Signed-off-by:
Krystian Pradzynski <krystian.pradzynski@intel.com> Signed-off-by:
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Krystian Pradzynski authored
All recent 40xx firmware already supports D0i3 entry message and this WA is no longer needed. Signed-off-by:
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Jacek Lawrynowicz authored
NPU does not require this delay regardless of the generation. All generations are integrated into the SOC. Signed-off-by:
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Wachowski, Karol authored
Do not use kernel CIRC_SPACE and CIRC_CNT that incorrectly return space of a queue when wrap bit was set. Use correct implementation that compares producer, consumer and wrap bit values. Without this fix it was possible to lose events in case when event queue was full. Signed-off-by:
Wachowski, Karol <karol.wachowski@intel.com> Signed-off-by:
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Wachowski, Karol authored
Set AW_SNOOP_OVERRIDE bit in VPU_37/40XX_HOST_IF_TCU_PTW_OVERRIDES to force snooping for MMU write accesses (setting event queue events). MMU event queue buffer is the only buffer written by MMU and mapped as write-back which break cache coherency. Force write transactions to be snooped solving the problem. Signed-off-by:
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- 05 Feb, 2024 4 commits
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Timur Tabi authored
Function nvkm_gsp_radix3_sg() uses nvkm_gsp_mem objects to allocate the radix3 tables, but it unnecessarily creates those objects manually instead of using the standard nvkm_gsp_mem_ctor() function like the rest of the code does. Signed-off-by:
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Timur Tabi authored
Nouveau manages GSP-RM DMA buffers with nvkm_gsp_mem objects. Several of these buffers are never dealloced. Some of them can be deallocated right after GSP-RM is initialized, but the rest need to stay until the driver unloads. Also futher bullet-proof these objects by poisoning the buffer and clearing the nvkm_gsp_mem object when it is deallocated. Poisoning the buffer should trigger an error (or crash) from GSP-RM if it tries to access the buffer after we've deallocated it, because we were wrong about when it is safe to deallocate. Finally, change the mem->size field to a size_t because that's the same type that dma_alloc_coherent expects. Cc: <stable@vger.kernel.org> # v6.7 Fixes: 176fdcbd ("drm/nouveau/gsp/r535: add support for booting GSP-RM") Signed-off-by:
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Dave Airlie authored
Timur pointed this out before, and it just slipped my mind, but this might help some things work better, around pcie power management. Cc: <stable@vger.kernel.org> # v6.7 Fixes: 8d55b0a9 ("nouveau/gsp: add some basic registry entries.") Signed-off-by:
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Maxime Ripard authored
Merge the last drm-misc-next-fixes tag that fell through the cracks. Signed-off-by:Maxime Ripard <mripard@kernel.org>
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- 31 Jan, 2024 1 commit
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T.J. Mercier authored
DMA buffers allocated from the CMA dma-buf heap get counted under RssFile for processes that map them and trigger page faults. In addition to the incorrect accounting reported to userspace, reclaim behavior was influenced by the MM_FILEPAGES counter until linux 6.8, but this memory is not reclaimable. [1] Change the CMA dma-buf heap to set VM_PFNMAP on the VMA so MM does not poke at the memory managed by this dma-buf heap, and use vmf_insert_pfn to correct the RSS accounting. The system dma-buf heap does not suffer from this issue since remap_pfn_range is used during the mmap of the buffer, which also sets VM_PFNMAP on the VMA. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/mm/vmscan.c?id=fb46e22a9e3863e08aef8815df9f17d0f4b9aede Fixes: b61614ec ("dma-buf: heaps: Add CMA heap to dmabuf heaps") Signed-off-by:
T.J. Mercier <tjmercier@google.com> Acked-by:
Sumit Semwal <sumit.semwal@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20240117181141.286383-1-tjmercier@google.com
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- 29 Jan, 2024 1 commit
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Sebastian Ott authored
Set the segment size of the virtio_gpu device to the value used by the drm helpers when allocating sg lists to fix the following complaint from DMA_API debug code: DMA-API: virtio-pci 0000:07:00.0: mapping sg segment longer than device claims to support [len=262144] [max=65536] Cc: stable@vger.kernel.org Tested-by:
Zhenyu Zhang <zhenyzha@redhat.com> Acked-by:
Vivek Kasireddy <vivek.kasireddy@intel.com> Signed-off-by:
Sebastian Ott <sebott@redhat.com> Signed-off-by:
Dmitry Osipenko <dmitry.osipenko@collabora.com> Link: https://patchwork.freedesktop.org/patch/msgid/7258a4cc-da16-5c34-a042-2a23ee396d56@redhat.com
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- 25 Jan, 2024 3 commits
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Jacek Lawrynowicz authored
- Synchronize job submission with reset/recovery using reset_lock - Always print recovery reason and call diagnose_failure() - Don't allow for autosupend during recovery - Prevent immediate autosuspend after reset/recovery - Prevent force_recovery for issuing TDR when device is suspended - Reset VPU instead triggering recovery after changing debugfs params Signed-off-by:
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Jacek Lawrynowicz authored
- Wake up the device as late as possible - Remove job reference counting in order to simplify the code - Don't put jobs that are not fully submitted on submitted_jobs_xa in order to avoid potential races with reset/recovery Signed-off-by:
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Jacek Lawrynowicz authored
- Add context_list_lock to synchronize user context addition/removal - Use drm_dev_enter() to prevent unbinding the device during ivpu_open() and vpu address allocation Signed-off-by:
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- 24 Jan, 2024 1 commit
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Thomas Zimmermann authored
This reverts commit 60aebc95. Commit 60aebc95 ("drivers/firmware: Move sysfb_init() from device_initcall to subsys_initcall_sync") messes up initialization order of the graphics drivers and leads to blank displays on some systems. So revert the commit. To make the display drivers fully independent from initialization order requires to track framebuffer memory by device and independently from the loaded drivers. The kernel currently lacks the infrastructure to do so. Reported-by:
Jaak Ristioja <jaak@ristioja.ee> Closes: https://lore.kernel.org/dri-devel/ZUnNi3q3yB3zZfTl@P70.localdomain/T/#tReported-by:
Huacai Chen <chenhuacai@loongson.cn> Closes: https://lore.kernel.org/dri-devel/20231108024613.2898921-1-chenhuacai@loongson.cn/ Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/10133Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240123120937.27736-1-tzimmermann@suse.de
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