kernel/git/next/linux-next.git/drivers/dma/qcom, branch master

dmaengine: qcom: gpi: Fix resource leaks as part of channel clean up

2026-09-10T12:54:22+00:00

The gpi_ch_init() error handling paths do not fully clean up resources when channel initialization fails. The unwind paths iterate over the original channel pointer instead of the channels stored in gpii->gchan[], preventing previously initialized sibling channels from being properly reset and deallocated. In addition, gpi_alloc_chan_resources() allocates ch_ring before calling gpi_ch_init(), but does not release it when initialization fails, resulting in a memory leak. The event ring cleanup path also leaves the PM state unchanged after freeing the ring. As a result, subsequent cleanup may incorrectly assume that the ring is still allocated, leading to a redundant EV_CMD_DEALLOC command and an attempt to deallocate an already released ring. Fix the unwind paths to operate on the correct channels, release ch_ring when channel initialization fails, and restore the event ring PM state after freeing the ring. Signed-off-by: Aniket Randive Reviewed-by: Frank Li Reviewed-by: Mukesh Kumar Savaliya Reviewed-by: Praveen Talari Link: https://patch.msgid.link/20260810-gpi_bug_fix-v2-1-60555394cbf9@oss.qualcomm.com Link: https://patch.msgid.link/20260819-gpi_bug_fix-v3-1-4c97333e6f5b@oss.qualcomm.com Signed-off-by: Vinod Koul

Merge tag 'dmaengine-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2026-08-24T19:21:15+00:00

Pull dmaengine updates from Vinod Koul: "Core: - New API to combine configuration and preparation and users New hardware support: - Mediatek MT8189 SoC uart dma support Updates: - Designware dma driver flatten desc structures and simplify code, interrupt-path groundwork changes, first part of PCI EP DMA support - Updates to zynqmp_dma with runtime PM and device removal improvments - Xilinx dma optimizations for AXIDMA and MCDMA channel management" * tag 'dmaengine-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (73 commits) dmaengine: dw-edma: Mark emulated IRQ as level-triggered dmaengine: idxd: assign all engines to group 0 in IAA defaults dmaengine: qcom_hidma: remove conditional return with no effect dmaengine: qcom-bam-dma: fix autosuspend cleanup during removal dmaengine: fsl-edma: tracing: no ptr dereference during log output dmaengine: dw-edma: Program endpoint function numbers dmaengine: dw-edma-pcie: Add chip flags to match data dmaengine: dw-edma-pcie: Handle optional data blocks dmaengine: dw-edma-pcie: Factor out descriptor block address lookup dmaengine: dw-edma-pcie: Add register offset match flag dmaengine: dw-edma-pcie: Add platform ops to match data dmaengine: dw-edma-pcie: Rename vsec_data to dma_data dmaengine: dw-edma-pcie: Add capability match data dmaengine: dw-edma-pcie: Track non-LL mode in DMA data dmaengine: dw-edma: Add partial channel ownership mode dmaengine: dw-edma: Initialize IRQ data before requesting IRQs dmaengine: dw-edma: Add core quiesce operations dmaengine: dw-edma: Add per-channel interrupt routing control dmaengine: dw-edma: Factor out HDMA interrupt setup helper dmaengine: dw-edma: Defer channel IRQ handling to workqueue ...

dmaengine: qcom_hidma: remove conditional return with no effect

2026-08-11T18:20:14+00:00

Both branches of the check return the same value, so the check has no effect. Remove it and return the value directly. This is the result of running the Coccinelle script from scripts/coccinelle/misc/cond_return_no_effect.cocci. Signed-off-by: Sang-Heon Jeon Link: https://patch.msgid.link/20260723184538.3888637-20-ekffu200098@gmail.com Signed-off-by: Vinod Koul

dmaengine: qcom-bam-dma: fix autosuspend cleanup during removal

2026-08-11T18:13:57+00:00

bam_dma_probe() calls pm_runtime_use_autosuspend(), but bam_dma_remove() does not call the matching pm_runtime_dont_use_autosuspend() when removing the device. If the autosuspend delay is set to a negative value while autosuspend is enabled, the runtime PM core increments usage_count to prevent runtime suspend. Without calling pm_runtime_dont_use_autosuspend() during teardown, this reference is not dropped and usage_count remains unbalanced. Add the missing pm_runtime_dont_use_autosuspend() call before forcing the device into runtime suspend during removal. This issue was found by manual code inspection. Fixes: 7d2545599f5b ("dmaengine: qcom-bam-dma: Add pm_runtime support") Signed-off-by: Guangshuo Li Reviewed-by: Bartosz Golaszewski Link: https://patch.msgid.link/20260808110642.2770355-1-lgs201920130244@gmail.com Signed-off-by: Vinod Koul

Replace by more specific (c files)

2026-07-03T05:38:17+00:00

Replace the #include of by the more specific where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich Acked-by: Takashi Sakamoto Acked-by: Bjorn Helgaas Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub)

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