kernel/linux.git/drivers/dma/qcom, branch v7.2-rc1

dmaengine: qcom: Unify user-visible "Qualcomm" name

2026-06-11T05:40:41+00:00

Various names for Qualcomm as a company are used in user-visible config options: QCOM, Qualcomm and Qualcomm Technologies. Switch to unified "Qualcomm" so it will be easier for users to identify the options when for example running menuconfig. Signed-off-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20260423173602.92503-2-krzysztof.kozlowski@oss.qualcomm.com Signed-off-by: Vinod Koul

dmaengine: qcom: hidma: use sysfs_emit() in sysfs show callbacks

2026-06-11T05:32:13+00:00

Replace sprintf() and strlen() patterns in sysfs show callbacks with sysfs_emit(). sysfs_emit() is the preferred helper for formatting sysfs output and simplifies the implementation. Signed-off-by: Hungyu Lin Reviewed-by: Frank Li Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260607163119.78717-1-dennylin0707@gmail.com Signed-off-by: Vinod Koul

dmaengine: qcom: gpi: set DMA_PRIVATE capability

2026-06-08T11:32:21+00:00

The GPI DMA controller is only responsible for QUP peripherals, and cannot work as a general-purpose DMA accelerator. Set DMA_PRIVATE capability for it. This fixes error messages about GPI being shown when an async-tx consumer is loaded. Fixes: 5d0c3533a19f ("dmaengine: qcom: Add GPI dma driver") Signed-off-by: Icenowy Zheng Reviewed-by: Dmitry Baryshkov Link: https://patch.msgid.link/20260602070344.3707256-1-zhengxingda@iscas.ac.cn Signed-off-by: Vinod Koul

dmaengine: qcom: bam_dma: Add support for BAM v2.0.0

2026-05-19T17:03:20+00:00

Add register offset table entry for bam v2.0.0 version found on kaanapali. Signed-off-by: Kuldeep Singh Reviewed-by: Konrad Dybcio Link: https://patch.msgid.link/20260514-knp_qce-v2-2-890e3372eef8@oss.qualcomm.com Signed-off-by: Vinod Koul

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

Merge tag 'dmaengine-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2026-02-17T19:47:17+00:00

Pull dmaengine updates from Vinod Koul: "Core: - Add Frank Li as susbstem reviewer to help with reviews New Support: - Mediatek support for Dimensity 6300 and 9200 controller - Qualcomm Kaanapali and Glymur GPI DMA engine - Synopsis DW AXI Agilex5 - Renesas RZ/V2N SoC - Atmel microchip lan9691-dma - Tegra ADMA tegra264 Updates: - sg_nents_for_dma() helper use in subsystem - pm_runtime_mark_last_busy() redundant call update for subsystem - Residue support for xilinx AXIDMA driver - Intel Max SGL Size Support and capabilities for DSA3.0 - AXI dma larger than 32bits address support" * tag 'dmaengine-7.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (64 commits) dmaengine: add Frank Li as reviewer dt-bindings: dma: qcom,gpi: Update max interrupts lines to 16 dmaengine: fsl-edma: don't explicitly disable clocks in .remove() dmaengine: xilinx: xdma: use sg_nents_for_dma() helper dmaengine: sh: use sg_nents_for_dma() helper dmaengine: sa11x0: use sg_nents_for_dma() helper dmaengine: qcom: bam_dma: use sg_nents_for_dma() helper dmaengine: qcom: adm: use sg_nents_for_dma() helper dmaengine: pxa-dma: use sg_nents_for_dma() helper dmaengine: lgm: use sg_nents_for_dma() helper dmaengine: k3dma: use sg_nents_for_dma() helper dmaengine: dw-axi-dmac: use sg_nents_for_dma() helper dmaengine: bcm2835-dma: use sg_nents_for_dma() helper dmaengine: axi-dmac: use sg_nents_for_dma() helper dmaengine: altera-msgdma: use sg_nents_for_dma() helper scatterlist: introduce sg_nents_for_dma() helper dmaengine: idxd: Add Max SGL Size Support for DSA3.0 dmaengine: idxd: Expose DSA3.0 capabilities through sysfs dmaengine: sh: rz-dmac: Make channel irq local dmaengine: pl08x: Fix comment stating the difference between PL080 and PL081 ...

dmaengine: qcom: gpi: Fix memory leak in gpi_peripheral_config()

2026-01-11T16:42:38+00:00

Fix a memory leak in gpi_peripheral_config() where the original memory pointed to by gchan->config could be lost if krealloc() fails. The issue occurs when: 1. gchan->config points to previously allocated memory 2. krealloc() fails and returns NULL 3. The function directly assigns NULL to gchan->config, losing the reference to the original memory 4. The original memory becomes unreachable and cannot be freed Fix this by using a temporary variable to hold the krealloc() result and only updating gchan->config when the allocation succeeds. Found via static analysis and code review. Fixes: 5d0c3533a19f ("dmaengine: qcom: Add GPI dma driver") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin Reviewed-by: Bjorn Andersson Link: https://patch.msgid.link/20251029123421.91973-1-linmq006@gmail.com Signed-off-by: Vinod Koul

dmaengine: qcom: bam_dma: use sg_nents_for_dma() helper

2026-01-09T03:06:00+00:00

Instead of open coded variant let's use recently introduced helper. Reviewed-by: Bjorn Andersson Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260108105619.3513561-11-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul

dmaengine: qcom: adm: use sg_nents_for_dma() helper

2026-01-09T03:06:00+00:00

Instead of open coded variant let's use recently introduced helper. Reviewed-by: Bjorn Andersson Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260108105619.3513561-10-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul

dmaengine: qcom: bam_dma: use lock guards

2025-12-16T13:02:05+00:00

Simplify locking across the driver with lock guards from cleanup.h. Signed-off-by: Bartosz Golaszewski Link: https://patch.msgid.link/20251106-qcom-bam-dma-refactor-v1-2-0e2baaf3d81a@linaro.org Signed-off-by: Vinod Koul