wireguard-linux/drivers/i2c, branch stable

i2c: qcom-geni: Fix hardcoded clock index in SE_GENI_CLK_SEL

2026-09-24T20:52:30Z

qcom_geni_i2c_conf() writes a hardcoded 0 to SE_GENI_CLK_SEL, which selects an index from the hardware clock performance table. This always picks the first table entry regardless of the actual source clock configuration. On platforms where the matching entry is not at index 0, the wrong source clock divider is active and the I2C bus runs at an incorrect frequency. Use geni_se_clk_freq_match() in geni_i2c_clk_map_idx() to find the performance table index for the source clock (32 MHz or 19.2 MHz). Store the resolved index in a new clk_idx field in geni_i2c_dev and write it to SE_GENI_CLK_SEL instead of the hardcoded 0. Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller") Signed-off-by: Viken Dadhaniya Cc: # v4.19+ Reviewed-by: Mukesh Kumar Savaliya Signed-off-by: Andi Shyti Link: https://patch.msgid.link/20260921-i2c-fix-se-clk-conf-v2-1-8b5537ceff2d@oss.qualcomm.com

i2c: qcom-cci: fix device_node refcount leak in cci_probe()/cci_remove()

2026-09-20T07:40:29Z

The of_node_put() matching of_node_get() runs after i2c_del_adapter(), whose trailing memset() zeroes adap->dev and thus adap->dev.of_node, making the put a no-op and leaking the node on every adapter removal and error cleanup. Use a devm action: the pointer is captured at registration, out of reach of that memset(), and devres runs the put once on probe failure and detach, replacing the three manual of_node_put() calls. The setup loop uses the scoped iterator form so the child node is released automatically if devm_add_action_or_reset() fails mid-loop. Suggested-by: Konrad Dybcio Fixes: 02a4a69667a2 ("i2c: qcom-cci: don't put a device tree node before i2c_add_adapter()") Assisted-by: Claude:claude-opus-5 Signed-off-by: Liu Zhenlong Cc: # v5.17+ Reviewed-by: Vladimir Zapolskiy Reviewed-by: Konrad Dybcio Signed-off-by: Andi Shyti Link: https://patch.msgid.link/20260818175750.4205-1-dragonliu2018@gmail.com

i2c: qcom-geni: release DMA channels on probe error

2026-09-20T07:40:29Z

geni_i2c_init() grabs exclusive GPI tx/rx DMA channels when the serial engine runs in GPI mode. If i2c_add_adapter() subsequently fails, probe returns without releasing the channels, because the remove callback is not invoked after a failed probe. The adapter-registration failure path used to release the channels via its err_dma label; that release was dropped when the probe tail was restructured into geni_i2c_init(). Release the channels on the adapter-registration failure path, mirroring geni_i2c_remove(). Fixes: d8d3bb127ad1 ("i2c: qcom-geni: Isolate serial engine setup") Assisted-by: GLM:5.3 Signed-off-by: Shengzhuo Wei Reviewed-by: Konrad Dybcio Reviewed-by: Mukesh Kumar Savaliya Signed-off-by: Andi Shyti Link: https://patch.msgid.link/20260827-i2c-dma-channel-leak-v1-3-271d4adc03a0@cherr.cc

i2c: imx: release DMA channels on probe error

2026-09-20T07:40:28Z

i2c_imx_dma_request() acquires exclusive tx/rx DMA channels and is optional: on errors other than -EPROBE_DEFER the driver falls back to PIO mode and probe continues. If i2c_add_numbered_adapter() then fails, probe returns through clk_notifier_unregister without releasing the channels, because the remove callback is not invoked after a failed probe. Release the channels on the probe error path, mirroring i2c_imx_remove(). Fixes: ce1a78840ff7 ("i2c: imx: add DMA support for freescale i2c driver") Assisted-by: GLM:5.3 Signed-off-by: Shengzhuo Wei Cc: # v3.19+ Reviewed-by: Frank Li Signed-off-by: Andi Shyti Link: https://patch.msgid.link/20260827-i2c-dma-channel-leak-v1-2-271d4adc03a0@cherr.cc

i2c: at91: release DMA channels on remove and probe error

2026-09-20T07:40:28Z

at91_twi_configure_dma() requests exclusive tx/rx DMA channels, but nothing ever releases them on driver detach, and the probe error path after the channels are acquired (i2c_add_numbered_adapter() failure) returns without releasing them either, because the remove callback is not invoked after a failed probe. Move the release into a helper, call it from the existing configure-failure path, the adapter-registration failure path, and at91_twi_remove(). Fixes: 60937b2cdbf9 ("i2c: at91: add dma support") Assisted-by: GLM:5.3 Signed-off-by: Shengzhuo Wei Cc: # v3.8+ Acked-by: Mukesh Kumar Savaliya Signed-off-by: Andi Shyti Link: https://patch.msgid.link/20260827-i2c-dma-channel-leak-v1-1-271d4adc03a0@cherr.cc

i2c: atr: fix dangling adapter pointer on add failure

2026-09-16T05:30:36Z

i2c_atr_add_adapter() stores atr->adapter[chan_id] before i2c_add_adapter() so that the I2C bus notifier can match child clients during registration. On failure the channel is freed but the slot was left pointing at freed memory, which can lead to use-after-free in i2c_atr_del_adapter() / cleanup and also block reuse with -EEXIST. Clear the slot on the i2c_add_adapter() error path before freeing chan. Fixes: a076a860acae ("media: i2c: add I2C Address Translator (ATR) support") Signed-off-by: Linkai Gong Cc: # v6.6+ Reviewed-by: Andy Shevchenko Signed-off-by: Andi Shyti Link: https://patch.msgid.link/20260907071102.1080840-1-gonglinkai@kylinos.cn

i2c: imx: disable autosuspend on remove

2026-09-16T05:18:00Z

i2c_imx_probe() enables runtime PM autosuspend with pm_runtime_use_autosuspend(). The probe error path correctly undoes this setting with pm_runtime_dont_use_autosuspend(), but the normal remove path only disables runtime PM. The runtime PM API requires pm_runtime_use_autosuspend() to be undone with pm_runtime_dont_use_autosuspend() at driver exit unless runtime PM was enabled with devm_pm_runtime_enable(). Leaving the autosuspend flag set therefore leaves the runtime PM state incompletely cleaned up after the driver is unbound. Add the missing pm_runtime_dont_use_autosuspend() call to the remove path. This issue was found by manual code inspection. Fixes: 588eb93ea49f ("i2c: imx: add runtime pm support to improve the performance") Signed-off-by: Guangshuo Li Cc: # v4.5+ Reviewed-by: Frank Li Signed-off-by: Andi Shyti Link: https://patch.msgid.link/20260914091544.1667137-1-lgs201920130244@gmail.com

treewide: refresh kmalloc_obj() conversions

2026-09-05T04:37:00Z

This is another run of the Coccinelle script for converting kmalloc() family of allocations to kmalloc_obj() via the existing rules in scripts/coccinelle/api/kmalloc_objs.cocci This catches both the set of kmalloc() uses added since the first kmalloc_obj() conversions in v7.0 and adds a large group missed in the first pass due to Coccinelle not interacting well with the cleanup.h scoped_...() family of macros[1]. I worked around this with spatch's "--macro-file" argument to a file with all the scoped_...() macros mapped to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control flow indicator I could find. Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc, riscv, and s390 with no new warnings. Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1] Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2] Signed-off-by: Kees Cook

Merge tag 'i2c-fixes-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux

2026-08-30T17:53:24Z

Pull i2c fixes from Andi Shyti: "Fixes mainly for teardown and resource handling, runtime PM and hardware-specific controller issues: - fix debugfs use-after-free when removing the adapter - designware: apply interrupt mask quirk for HJMC3001 - imx-lpi2c: avoid target accesses on master-only controllers - mux: release channel node when adapter registration fails - qcom-cci: fix autosuspend and runtime PM cleanup on removal - qcom-geni: fix timing parameters for 32 MHz clock" * tag 'i2c-fixes-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux: i2c: core: fix debugfs UAF on adapter removal i2c: imx-lpi2c: avoid accessing target registers on master-only controllers i2c: qcom-cci: fix autosuspend cleanup i2c: designware: Enable interrupt mask workaround for HJMC3001 i2c: qcom-geni: update frequency table to fix timing parameters i2c: mux: Fix channel node leak on adapter add failure

Merge tag 'drm-next-2026-08-29' of https://gitlab.freedesktop.org/drm/kernel

2026-08-28T23:37:55Z

Pull more drm updates from Dave Airlie: "As mentioned last week, an msm pull request fell down the side of the couch or whatever the email equivalent of that is. This has the msm next stuff + the usual fixes for amd/intel. core: - use drm_warn instead of warn msm: - Bindings: - Added Shikra support - Document a840, a704, a722 - Core: - Use drm_client buffers for fbdev emulation - teardown fixes - ARM32 DMA fixup - Remove objects from evict list when re-validated - Bunch of corner case and error path fixes - DPU: - Dropped dev_pm_opp_set_rate(0) preventing burnout - Fixed SSPP offsets of Kaanapali - DP: - Dropped dev_pm_opp_set_rate(0) preventing burnout - Cleaned up core code in preparation for MST support - Fixed prepare() to let Pipewire continue in case of the unplugged cable - GPU: - Add support for a704 - Add support for a722 - HDMI: - Simplifed register access amdgpu: - eGPU fixes - Runtime PM fix - UserQ fixes - Backlight fix - Discovery sysfs fix - Reset handling fixes - Buffer func handling fix for xgmi - VCN boundary check fix - DC lut handling fixes - MES fixes - UVD fix - VCE 3 fix - Enforce isolation fix - HPD fix for VGA/LVDS - DML fix - DCN 6 fixes - DC gpu reset fix amdkfd: - Fix return value - CU occupancy for GFX 11 - CU occupancy for GFX 12/12.1 - Queue bounds checking fix - SVM fixes - CRIU bounds checking fix radeon: - iMac display fix xe: - error message cleanups - i2c global register definitions as dependency for xe/i2c fixes - Media workardound - Add CCS to gt_idle debugfs print - Page fault related fix - i2c related fixes - System Controller mailbox bit fix" * tag 'drm-next-2026-08-29' of https://gitlab.freedesktop.org/drm/kernel: (121 commits) drm/xe/sysctrl: Read mailbox phase bit from hardware drm/xe/i2c: Keep the i2c controller always enabled drm/xe/i2c: Fix the interrupt handling i2c: designware: Global register definitions drm/xe: Reject page faults from non-fault-mode scratch VMs drm/xe/xe_gt_idle: Add CCS to the powergating info print drm/xe: Do not apply WA 14025883347 to media 3503 drm/amd/display: fix dc_lock leak on GPU reset error paths drm/amd/display: Fix redundant GPUVMEnable checks in dcn6 flip schedule drm/amd/display: Fix wrong bytes-per-pixel value for dml2_422_packed_10 drm/amdkfd: guard against NULL restore_mqd in CRIU queue restore drm/amdgpu/userq: fix lock missing for userq fence error set drm/amdkfd: Fix the case that vm range is hole at svm_migrate_copy_to_vram drm/amdkfd: Fix error path at svm_migrate_copy_to_ram drm/amd/display: Log details when failing to register HPD IRQ drm/amd/display: Fix HPD consideration for VGA/LVDS connectors on DCE drm/amdgpu: clamp the isolation index for rings outside a partition drm/amdkfd: Reject zero-sized AQL queue allocations after size halving drm/amdgpu: Fix VCE 3 ring align_mask drm/kfd: Add CU occupancy support to GFX12.1 ...