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2026-04-24drm/amd/pm: fix missing fine-grained dpm table flag on aldebaranYang Wang
Add the missing SMU_DPM_TABLE_FINE_GRAINED flag to aldebaran DPM table. This fixes the pp_dpm_sclk node issue caused by missing flag configuration. Fixes: 7ea1c722fe1d ("drm/amd/pm: Use common helper for aldebaran dpm table") Signed-off-by: Yang Wang <kevinyang.wang@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 3427dea3a48ebddb491a26093f3627384b3cb2c2)
2026-04-24drm/amdgpu/gmc: Fix AMDGPU_GART_PLACEMENT_LOW to not overlap with VRAMTimur Kristóf
When the GART placement is set to AMDGPU_GART_PLACEMENT_LOW: Make sure that GART does not overlap with VRAM when VRAM is configured to be in the low address space. Solve this according to the following logic: - When GART fits before VRAM, use zero address for GART - Otherwise, put GART after the end of VRAM, aligned to 4 GiB Previously, I had assumed this was not possible so it was OK to not handle it, but now we got a report from a user who has a board that is configured this way. Fixes: 917f91d8d8e8 ("drm/amdgpu/gmc: add a way to force a particular placement for GART") Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 3d9de5d86a1658cadb311461b001eb1df67263ad)
2026-04-24amdkfd: Only ignore -ENOENT for KFD init failuiresMario Limonciello (AMD)
When compiled without CONFIG_HSA_AMD KFD will return -ENOENT. As other errors will cause KFD functionality issues this is the only error code that should be ignored at init. Reviewed-by: Kent Russell <kent.russell@amd.com> Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 4259a25341abf77939767215706f4e3cfd4b73b8)
2026-04-24drm/amdgpu: avoid double drm_exec_fini() in userq validateHongyan Xu
When new_addition is true, amdgpu_userq_vm_validate() calls drm_exec_fini(&exec) before iterating over the collected HMM ranges and calling amdgpu_ttm_tt_get_user_pages(). If amdgpu_ttm_tt_get_user_pages() fails in that path, the code jumps to unlock_all and calls drm_exec_fini(&exec) a second time on the same exec object. drm_exec_fini() is not idempotent: it frees exec->objects and may also drop exec->contended and finalize the ww acquire context. Route that error path directly to the range cleanup once exec has already been finalized. Fixes: 42f148788469 ("drm/amdgpu/userqueue: validate userptrs for userqueues") Issue found using a prototype static analysis tool and confirmed by code review. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Hongyan Xu <getshell@seu.edu.cn> Signed-off-by: Slavin Liu <220245772@seu.edu.cn> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 2802952e4a07306da6ebe813ff1acacc5691851a)
2026-04-24drm/amd/display: Restore analog connector supportRoman Li
[Why] The analog connector support was accidentally removed, causing a crash when connecting an analog monitor. [How] This patch restores the functions and pointers required for proper analog and DP bridge encoder support on legacy GPUs. V2: Restore the external encoder control functions. V3: - Restore BIOS parser external encoder DAC load detection - Restore stream initialization and source selection changes Fixes: e56e3cff2a1b ("drm/amd/display: Sync dcn42 with DC 3.2.373") Cc: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Roman Li <Roman.Li@amd.com> Reviewed-by: Alex Hung <alex.hung@amd.com> Reviewed-by: Timur Kristóf <timur.kristof@gmail.com> Tested-by: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit cea8349e4494d2892ea57eef3fe4a8987464a876)
2026-04-24drm/amdgpu: fix zero-size GDS range init on RDNA4Arjan van de Ven
RDNA4 (GFX 12) hardware removes the GDS, GWS, and OA on-chip memory resources. The gfx_v12_0 initialisation code correctly leaves adev->gds.gds_size, adev->gds.gws_size, and adev->gds.oa_size at zero to reflect this. amdgpu_ttm_init() unconditionally calls amdgpu_ttm_init_on_chip() for each of these resources regardless of size. When the size is zero, amdgpu_ttm_init_on_chip() forwards the call to ttm_range_man_init(), which calls drm_mm_init(mm, 0, 0). drm_mm_init() immediately fires DRM_MM_BUG_ON(start + size <= start) -- trivially true when size is zero -- crashing the kernel during modprobe of amdgpu on an RX 9070 XT. Guard against this by returning 0 early from amdgpu_ttm_init_on_chip() when size_in_page is zero. This skips TTM resource manager registration for hardware resources that are absent, without affecting any other GPU type. DRM_MM_BUG_ON() only asserts if CONFIG_DRM_DEBUG_MM is enabled in the kernel config. This is apparently rarely enabled as these chips have been in the market for over a year and this issue was only reported now. Link: https://lore.kernel.org/all/bug-221376-2300@https.bugzilla.kernel.org%2F/ Link: https://bugzilla.kernel.org/show_bug.cgi?id=221376 Oops-Analysis: http://oops.fenrus.org/reports/bugzilla.korg/221376/report.html Assisted-by: GitHub Copilot:Claude Sonnet 4.6 linux-kernel-oops-x86. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 5719ce5865279cad4fd5f01011fe037168503f2d) Cc: stable@vger.kernel.org
2026-04-24drm/amdgpu: Add node_id-to-die-name decoding for ih v7_1Hawking Zhang
Converts node_id values into human-readable die names to facilitate debugging v2: squash in fix (Alex) Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: use the ASP command for partition switchShiwu Zhang
Pass the compute partition mode to ASP. v2: Squash fixes (Alex) Reviewed-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Shiwu Zhang <shiwu.zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdkfd: check if vm ready in svm map and unmap to gpuYuanShang
Don't map or unmap svm range to gpu if vm is not ready for updates. Why: DRM entity may already be killed when the svm worker try to update gpu vm. Signed-off-by: YuanShang <YuanShang.Mao@amd.com> Reviewed-by: Philip Yang <philip.yang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdkfd: validate SVM ioctl nattr against buffer sizeAlysa Liu
Validate nattr field against the buffer size, preventing out-of-bounds buffer access via user-controlled attribute count. Reviewed-by: Amir Shetaia <Amir.Shetaia@amd.com> Signed-off-by: Alysa Liu <Alysa.Liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24Revert "drm/amdgpu: Init mcm_addr look up table"Shiwu Zhang
This reverts commit e7820045fde15d25b5b2706f03499e0cb9ae778e. As vBIOS add the support for partition switch programming. Signed-off-by: Shiwu Zhang <shiwu.zhang@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdkfd: Limit per-process xnack support for GFX12.1Harish Kasiviswanathan
GFX12.1 doesn't support different processes with different xnack setting. Hence, xnack changes from its default setting needs driver reload with noretry module parameter. However, if driver boots-up with xnack on and process sets xnack off, this condition is supported. In this case, only driver takes xnack off path whereas hardware / firmware considers xnack is on. Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> Reviewed-by: Philip.Yang <Philip.Yang@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: Set default xnack mode for gfx_v12.1 A0/B0Harish Kasiviswanathan
For A0, default xnack mode is off For BO, default xnack mode is on Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> Reviewed-by: Philip.Yang <Philip.Yang@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: Set chicken bit for gfx_v12.1 xnackHarish Kasiviswanathan
For xnack on, set TCP_PERFCOUNTER_FILTER.COMPRESSION_ENABLE to 1 For xnack off, set TCP_PERFCOUNTER_FILTER.COMPRESSION_ENABLE to 0 Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> Reviewed-by: Philip.Yang <Philip.Yang@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: Switch to gfx_v12_1_get_xccs_per_xcpHawking Zhang
Use gfx v12_1 callback to query the numbers of xccs per xcp Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Le Ma <le.ma@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: In GFX12.1 CU is same as WGPHarish Kasiviswanathan
Fix this for current ip discovery table. v2: Move the change to gfx12 file v3: Change only for the current version of ip discovery table v4: Squash in build fixes Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> Reviewed-by: Felix Kuehling <felix.kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: update cp cmd pkt for gfx v12_1Likun Gao
Update CP command package for gfx v12.1. v2: squash in update (Alex) Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: support nbio v6_3_2Likun Gao
Support NBIO version 6.3.2 related function. Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: add doorbell range function for nbio v6_3_2Likun Gao
Add doorbell range and ih control related function for NBIO version 6.3.2. v2: squash in doorbell range fixes v3: squash in xcd doorbell fix Signed-off-by: Likun Gao <Likun.Gao@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: Add nbio v6_3_2 supportHawking Zhang
v6_3_2 is a new nbio generation ip Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Le Ma <le.ma@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: Add nbio v6_3_2 ip headers v4Hawking Zhang
Add header files for nbio v6_3_2 register offsets and shift masks v2: Update nbio v6_3_2 ip headers up to CL7337280 v3: Update nbio v6_3_2 ip headers up to CL7749557 v4: Clean up registers (Alex) v5: squash in updates (Alex) Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com> Reviewed-by: Likun Gao <Likun.Gao@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: Avoid reset in AMDGPU unload path for APUs with GFX V11 and higher.Shubhankar Milind Sardeshpande
GFX V11 has GC block as default off IP. Every time AMDGPU driver sends a request to PMFW to unload MP1, PMFW will put GC in reset and power down the voltage.Hence, skipping reset for APUs with GFX V11 or later to avoid reset related failures. Fixes: 34355e61835e ("drm/amdgpu: Fix GFX hang on SteamDeck when amdgpu is reloaded") Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Shubhankar Milind Sardeshpande <Shubhankar.MilindSardeshpande@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: Only send RMA CPER when threshold is exceededKent Russell
According to our documentation, the RMA should only occur when the threshold has been exceeded, not met. Fixes: 5028a24aa89a ("drm/amdgpu: Send applicable RMA CPERs at end of RAS init") Signed-off-by: Kent Russell <kent.russell@amd.com> Reviewed-by: Tao Zhou <tao.zhou1@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amd/display: Fix unsigned underflow in SubVP vblank schedulability check v2Srinivasan Shanmugam
subvp_vblank_schedulable() checks whether the SubVP active region can fit the prefetch time, vblank frame time, and the larger of the vblank blanking time and MALL region. Commit 11236ac905e7 ("drm/amd/display: Fix dml2_0 narrowing boundaries") changed the intermediate timing variables from u16 to u32. After that change, the schedulability test: subvp_active_us - prefetch_us - vblank_frame_us - max_vblank_mallregion > 0 is evaluated in unsigned arithmetic. If the required time exceeds the available active time, the subtraction can underflow and wrap, producing a large positive value instead of a negative result. Fix this by comparing the available time against the required time directly, using u64 for the accumulated required duration. v2: - Use uint64_t instead of u64 for consistency with DC style (Dillon) - Make all terms explicitly uint64_t in the accumulated sum & use single-definition form for required_us (Gaghik) Fixes: 11236ac905e7 ("drm/amd/display: Fix dml2_0 narrowing boundaries") Reported-by: Dan Carpenter <error27@gmail.com> Cc: Roman Li <roman.li@amd.com> Cc: Alex Hung <alex.hung@amd.com> Cc: Tom Chung <chiahsuan.chung@amd.com> Cc: Dillon Varone <dillon.varone@amd.com> Cc: Gaghik Khachatrian <gaghik.khachatrian@amd.com> Cc: Aurabindo Pillai <aurabindo.pillai@amd.com> Cc: Chenyu Chen <chen-yu.chen@amd.com> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Reviewed-by: Dillon Varone <dillon.varone@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amd/display: Fix divide by zero in calc_psr_num_static_framesSrinivasan Shanmugam
calc_psr_num_static_frames() divides by vsync_rate_hz before checking whether it is zero: frame_time_microsec = 1000000 / vsync_rate_hz; This can trigger a divide-by-zero bug if an invalid refresh rate is passed in. Rewrite the calculation to directly compute the number of frames needed for at least 30 ms using DIV_ROUND_UP(). This avoids the invalid divisor and removes the temporary frame_time_microsec calculation. Keep the existing fallback behavior of 2 static frames when vsync_rate_hz is zero. Fixes: 4cef2ac4c795 ("drm/amd/display: Introduce power module on Linux") Reported-by: Dan Carpenter <error27@gmail.com> Cc: Leo Li <sunpeng.li@amd.com> Cc: Ray Wu <ray.wu@amd.com> Cc: Chenyu Chen <chen-yu.chen@amd.com> Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com> Reviewed-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: fix root reservation in amdgpu_vm_handle_faultPierre-Eric Pelloux-Prayer
svm_range_restore_pages might reserve the root bo so it must be called after unreserving it. Fixes: 1b135c6da061 ("drm/amdgpu: extract amdgpu_vm_lock_by_pasid from amdgpu_vm_handle_fault") Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu/gfx6: Support harvested SI chips with disabled TCCs (v2)Timur Kristóf
This commit fixes amdgpu to work on the Radeon HD 7870 XT which has never worked with the Linux open source drivers before. Some boards have "harvested" chips, meaning that some parts of the chip are disabled and fused, and it's sold for cheaper and under a different marketing name. On a harvested chip, any of the following can be disabled: - CUs (Compute Units) - RBs (Render Backend, aka. ROP) - Memory channels (ie. the chip has a lower bandwidth) - TCCs (ie. less L2 cache) Handle chips with harvested TCCs by patching the registers that configure how TCCs are mapped. If some TCCs are disabled, we need to make sure that the disabled TCCs are not used, and the remaining TCCs are used optimally. TCP_CHAN_STEER_LO/HI control which TCC is used by TCP channels. TCP_ADDR_CONFIG.NUM_TCC_BANKS controls how many channels are used. Note that the TCC configuration is highly relevant to performance. Suboptimal configuration (eg. CHAN_STEER=0) can significantly reduce gaming performance. For optimal performance: - Rely on the CHAN_STEER from the golden registers table, only skip disabled TCCs but keep the mapping order. - Limit NUM_TCC_BANKS to number of active TCCs to avoid thrashing, which performs better than using the same TCC twice. v2: - Also consider CGTS_USER_TCC_DISABLE for disabled TCCs. Link: https://bugs.freedesktop.org/show_bug.cgi?id=60879 Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/2664 Fixes: 2cd46ad22383 ("drm/amdgpu: add graphic pipeline implementation for si v8") Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu/uvd3.1: Don't validate the firmware when already validatedTimur Kristóf
UVD 3.1 firmware validation seems to always fail after attempting it when it had already been validated. (This works similarly with the VCE 1.0 as well.) Don't attempt repeating the validation when it's already done. This caused issues in situations when the system isn't able to suspend the GPU properly and so the GPU isn't actually powered down. Then amdgpu would fail when calling the IP block resume function. Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/2887 Fixes: bb7978111dd3 ("drm/amdgpu: fix SI UVD firmware validate resume fail") Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: fix AMDGPU_INFO_READ_MMR_REGChristian König
There were multiple issues in that code. First of all the order between the reset semaphore and the mm_lock was wrong (e.g. copy_to_user) was called while holding the lock. Then we allocated memory while holding the reset semaphore which is also a pretty big bug and can deadlock. Then we used down_read_trylock() instead of waiting for the reset to finish. Signed-off-by: Christian König <christian.koenig@amd.com> Fixes: 9e823f307074 ("drm/amdgpu: Block MMR_READ IOCTL in reset") Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amd/pm: fix missing fine-grained dpm table flag on aldebaranYang Wang
Add the missing SMU_DPM_TABLE_FINE_GRAINED flag to aldebaran DPM table. This fixes the pp_dpm_sclk node issue caused by missing flag configuration. Fixes: 7ea1c722fe1d ("drm/amd/pm: Use common helper for aldebaran dpm table") Signed-off-by: Yang Wang <kevinyang.wang@amd.com> Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amd/pm: remove trailing semicolon from AMDGPU_PM_POLICY_ATTR macroYang Wang
macros should not include a trailing semicolon as per kernel coding style (checkpatch.pl warning). move the semicolon from the macro definition to the invocation sites instead. checkpatch.pl logs: WARNING: macros should not use a trailing semicolon +#define AMDGPU_PM_POLICY_ATTR(_name, _id) \ + static struct amdgpu_pm_policy_attr pm_policy_attr_##_name = { \ + .dev_attr = __ATTR(_name, 0644, amdgpu_get_pm_policy_attr, \ + amdgpu_set_pm_policy_attr), \ + .id = PP_PM_POLICY_##_id, \ + }; Fixes: 4d154b1ca580 ("drm/amd/pm: Add support for DPM policies") Signed-off-by: Yang Wang <kevinyang.wang@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu/gmc: Fix AMDGPU_GART_PLACEMENT_LOW to not overlap with VRAMTimur Kristóf
When the GART placement is set to AMDGPU_GART_PLACEMENT_LOW: Make sure that GART does not overlap with VRAM when VRAM is configured to be in the low address space. Solve this according to the following logic: - When GART fits before VRAM, use zero address for GART - Otherwise, put GART after the end of VRAM, aligned to 4 GiB Previously, I had assumed this was not possible so it was OK to not handle it, but now we got a report from a user who has a board that is configured this way. Fixes: 917f91d8d8e8 ("drm/amdgpu/gmc: add a way to force a particular placement for GART") Signed-off-by: Timur Kristóf <timur.kristof@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24amdkfd: Only ignore -ENOENT for KFD init failuiresMario Limonciello (AMD)
When compiled without CONFIG_HSA_AMD KFD will return -ENOENT. As other errors will cause KFD functionality issues this is the only error code that should be ignored at init. Reviewed-by: Kent Russell <kent.russell@amd.com> Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: avoid double drm_exec_fini() in userq validateHongyan Xu
When new_addition is true, amdgpu_userq_vm_validate() calls drm_exec_fini(&exec) before iterating over the collected HMM ranges and calling amdgpu_ttm_tt_get_user_pages(). If amdgpu_ttm_tt_get_user_pages() fails in that path, the code jumps to unlock_all and calls drm_exec_fini(&exec) a second time on the same exec object. drm_exec_fini() is not idempotent: it frees exec->objects and may also drop exec->contended and finalize the ww acquire context. Route that error path directly to the range cleanup once exec has already been finalized. Fixes: 42f148788469 ("drm/amdgpu/userqueue: validate userptrs for userqueues") Issue found using a prototype static analysis tool and confirmed by code review. Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Hongyan Xu <getshell@seu.edu.cn> Signed-off-by: Slavin Liu <220245772@seu.edu.cn> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amd/display: Restore analog connector supportRoman Li
[Why] The analog connector support was accidentally removed, causing a crash when connecting an analog monitor. [How] This patch restores the functions and pointers required for proper analog and DP bridge encoder support on legacy GPUs. V2: Restore the external encoder control functions. V3: - Restore BIOS parser external encoder DAC load detection - Restore stream initialization and source selection changes Fixes: e56e3cff2a1b ("drm/amd/display: Sync dcn42 with DC 3.2.373") Cc: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Roman Li <Roman.Li@amd.com> Reviewed-by: Alex Hung <alex.hung@amd.com> Reviewed-by: Timur Kristóf <timur.kristof@gmail.com> Tested-by: Timur Kristóf <timur.kristof@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: fix zero-size GDS range init on RDNA4Arjan van de Ven
RDNA4 (GFX 12) hardware removes the GDS, GWS, and OA on-chip memory resources. The gfx_v12_0 initialisation code correctly leaves adev->gds.gds_size, adev->gds.gws_size, and adev->gds.oa_size at zero to reflect this. amdgpu_ttm_init() unconditionally calls amdgpu_ttm_init_on_chip() for each of these resources regardless of size. When the size is zero, amdgpu_ttm_init_on_chip() forwards the call to ttm_range_man_init(), which calls drm_mm_init(mm, 0, 0). drm_mm_init() immediately fires DRM_MM_BUG_ON(start + size <= start) -- trivially true when size is zero -- crashing the kernel during modprobe of amdgpu on an RX 9070 XT. Guard against this by returning 0 early from amdgpu_ttm_init_on_chip() when size_in_page is zero. This skips TTM resource manager registration for hardware resources that are absent, without affecting any other GPU type. DRM_MM_BUG_ON() only asserts if CONFIG_DRM_DEBUG_MM is enabled in the kernel config. This is apparently rarely enabled as these chips have been in the market for over a year and this issue was only reported now. Link: https://lore.kernel.org/all/bug-221376-2300@https.bugzilla.kernel.org%2F/ Link: https://bugzilla.kernel.org/show_bug.cgi?id=221376 Oops-Analysis: http://oops.fenrus.org/reports/bugzilla.korg/221376/report.html Assisted-by: GitHub Copilot:Claude Sonnet 4.6 linux-kernel-oops-x86. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: amd-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/amdgpu: Replace VKMS vblank timer with common implementationThomas Zimmermann
Replace amdgpu's custom vblank timers with the shared implementation in DRM's vblank code. Both are built upon hrtimers. The vblank logic is identical. The shared helpers contain all initialization internally. They also handle a number of deadlocks and race conditions that are present in amdgpu. Also remove the set-but-unused field vsync_timer_enabled from struct amdgpu_crtc. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2026-04-24drm/xe/xe_drm_ras: Add support for clear-error-counter in XE drm_rasRiana Tauro
Add support for clear-error-counter command in XE drm_ras This resets the counter value. Usage: $ sudo ynl --family drm_ras --do clear-error-counter --json \ '{"node-id":1, "error-id":1}' None Signed-off-by: Riana Tauro <riana.tauro@intel.com> Reviewed-by: Raag Jadav <raag.jadav@intel.com> Link: https://patch.msgid.link/20260409073318.2909379-6-riana.tauro@intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2026-04-24drm/drm_ras: Add clear-error-counter netlink command to drm_rasRiana Tauro
Introduce a new 'clear-error-counter' drm_ras command to reset the counter value for a specific error counter of a given node. The command is a 'do' netlink request with 'node-id' and 'error-id' as parameters with no response payload. Usage: $ sudo ynl --family drm_ras --do clear-error-counter --json \ '{"node-id":1, "error-id":1}' None Cc: Jakub Kicinski <kuba@kernel.org> Cc: Zack McKevitt <zachary.mckevitt@oss.qualcomm.com> Cc: Lijo Lazar <lijo.lazar@amd.com> Cc: Hawking Zhang <Hawking.Zhang@amd.com> Cc: David S. Miller <davem@davemloft.net> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Eric Dumazet <edumazet@google.com> Signed-off-by: Riana Tauro <riana.tauro@intel.com> Reviewed-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Raag Jadav <raag.jadav@intel.com> Link: https://patch.msgid.link/20260409073318.2909379-5-riana.tauro@intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by: Maxime Ripard <mripard@redhat.com>
2026-04-24drm/i915/dmc: use display instead of dereferencing dmc in ↵Desnes Nunes
intel_dmc_update_dc6_allowed_count() There is no need for dereferencing the dmc pointer if the display is already in the scope of intel_dmc_update_dc6_allowed_count function. No functional change. Signed-off-by: Desnes Nunes <desnesn@redhat.com> Link: https://patch.msgid.link/20260423201020.506908-1-desnesn@redhat.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2026-04-24drm/i915/ddi: add wrapper for calling ->get_buf_trans() hookJani Nikula
Add intel_ddi_buf_trans_get() wrapper for calling the encoder->get_buf_trans() hooks, allowing for a centralized place to e.g. check for VBT overrides for the buf translations. Cc: Michał Grzelak <michal.grzelak@intel.com> Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com> Link: https://patch.msgid.link/20260415115104.1721008-1-jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2026-04-24Merge tag 'drm-misc-fixes-2026-04-23' of ↵Dave Airlie
https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes This week in drm-misc-fixes, we have: - A patch to raise the vblank timeout to avoid it on virtual drivers - a state check fix for stm_lvds - a use-after-free fix for dma-buf - a mapping fix for panthor - a device_node reference leak fix for arcgpu - a bridge reference leak fix for dw-mipi-dsi - a sparse warning fix for dma-fence - a kconfig fix for hv - a memory leak fix for nouveau - a fix to duplicate colorop when duplicating states - a panel initialisation order fix for visionox-rm69299 - a fix to prevent an infinite loop for v3d - an overflow fix for nouveau Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <mripard@redhat.com> Link: https://patch.msgid.link/20260423-realistic-eager-reindeer-4dacf7@houat
2026-04-24Merge tag 'amd-drm-fixes-7.1-2026-04-23' of ↵Dave Airlie
https://gitlab.freedesktop.org/agd5f/linux into drm-next amd-drm-fixes-7.1-2026-04-23: amdgpu: - DC idle state manager fix - ASPM fix - GPUVM SVM fix - DCE 6 fix amdkfd: - num_of_nodes bounds check fix Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexander.deucher@amd.com> Link: https://patch.msgid.link/20260423170129.2345978-1-alexander.deucher@amd.com
2026-04-24Merge tag 'drm-misc-next-fixes-2026-04-23' of ↵Dave Airlie
https://gitlab.freedesktop.org/drm/misc/kernel into drm-next Short summary of fixes pull: rcar-du: - fix NULL-ptr crash Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patch.msgid.link/20260423130852.GA114622@linux.fritz.box
2026-04-23drm/amdkfd: Add upper bound check for num_of_nodesAlysa Liu
drm/amdkfd: Add upper bound check for num_of_nodes in kfd_ioctl_get_process_apertures_new. Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com> Signed-off-by: Alysa Liu <Alysa.Liu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 98ff46a5ea090c14d2cdb4f5b993b05d74f3949f) Cc: stable@vger.kernel.org
2026-04-23drm: rcar-du: Fix crash when no CMM is availableLaurent Pinchart
Commit 3bce3fdd1ff2 ("drm: rcar-du: Don't leak device_link to CMM") refactored CMM handling, and introduced an incorrect test for CMM availability. When no CMM is present, the rcrtc->cmm field is NULL, testing rcrtc->cmm->dev causes a NULL pointer dereference. This slipped through testing as all tests were run with the CMM present. Fix this issue by correctly testing for rcrtc->cmm. Fixes: 3bce3fdd1ff2 ("drm: rcar-du: Don't leak device_link to CMM") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Closes: https://lore.kernel.org/dri-devel/CAMuHMdXomz9GFDqkBjGX9Sda_GLccPcrihvFbOz0GAitDVNTbw@mail.gmail.com Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://patch.msgid.link/20260408124205.1962448-1-laurent.pinchart+renesas@ideasonboard.com Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> (cherry picked from commit 3e9a1da270ddff449b1ad9eadc958f43bc204bd2) Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
2026-04-23Merge tag 'drm-intel-next-fixes-2026-04-22' of ↵Dave Airlie
https://gitlab.freedesktop.org/drm/i915/kernel into drm-next - Fix uninitialized variable in the alignment loop [psr] (Jouni Högander) Signed-off-by: Dave Airlie <airlied@redhat.com> From: Tvrtko Ursulin <tursulin@igalia.com> Link: https://patch.msgid.link/aeh-dKTow5Fl4Iv4@linux
2026-04-22drm/xe: Fix null pointer dereference in devcoredump cleanupZhanjun Dong
In xe_devcoredump_snapshot_free(), ss->gt may be NULL when the snapshot was never fully populated (e.g., when cleanup is triggered without a prior capture). Guard the xe_guc_capture_put_matched_nodes() call with IS_ERR_OR_NULL() to prevent a null dereference. In xe_devcoredump_free(), the deferred work is only queued when a coredump is captured, so guard cancel_work_sync() with a check on coredump->captured. Signed-off-by: Zhanjun Dong <zhanjun.dong@intel.com> Reviewed-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com> Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com> Link: https://patch.msgid.link/20260326181017.2060209-1-zhanjun.dong@intel.com
2026-04-22drm/panel: ilitek-ili9881c: support Waveshare 7.0" DSI panelDmitry Baryshkov
Enable support for Waveshare 7.0" DSI TOUCH-A panel. It requires additional voltage regulator, iovcc. Reviewed-by: Linus Walleij <linusw@kernel.org> Link: https://patch.msgid.link/20260418-waveshare-dsi-touch-v4-2-b249f3e702bd@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
2026-04-22drm/bridge: simple-bridge: Add support for MStar TSUMU88ADT3-LF-1Maxim Schwalm
A simple HDMI bridge used in ASUS Transformer AiO P1801-T. Signed-off-by: Maxim Schwalm <maxim.schwalm@gmail.com> Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com> Reviewed-by: Robert Foss <rfoss@kernel.org> Link: https://patch.msgid.link/20260417064953.20511-4-clamor95@gmail.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
generated by cgit v1.2.3 (git 2.39.1) at 2026-09-21 08:49:48 +0000