[Deepin-Kernel-SIG] [linux 6.6.y] [FROMLIST] dmaengine: qcom: gpi: set DMA_PRIVATE capability

[Avenger-285714]

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: 5d0c353 ("dmaengine: qcom: Add GPI dma driver")

Link: https://lore.kernel.org/all/20260602070344.3707256-1-zhengxingda@iscas.ac.cn/
Suggested-by: Icenowy Zheng zhengxingda@iscas.ac.cn

Summary by Sourcery

Bug Fixes:

• Prevent spurious async-tx error messages by setting the DMA_PRIVATE capability on the Qualcomm GPI DMA controller.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR updates the Qualcomm GPI DMA engine driver to mark it as a private DMA controller, restricting its use to QUP peripherals and preventing it from being treated as a general-purpose async-tx DMA provider.

File-Level Changes

Change	Details	Files
Mark the Qualcomm GPI DMA engine as a private DMA controller by enabling the DMA_PRIVATE capability in its probe routine.	Extend the GPI DMA device capability mask initialization to include DMA_PRIVATE alongside DMA_SLAVE so the controller is only used by its dedicated clients Rely on the updated capability mask to avoid GPI being offered to generic async-tx consumers, eliminating spurious error messages when such consumers are loaded	drivers/dma/qcom/gpi.c

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[APPROVALNOTIFIER] This PR is NOT APPROVED

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[Copilot]

Pull request overview

Marks the Qualcomm GPI DMAengine device as private so it won’t be considered by the generic async-tx DMA allocator/channel table, avoiding misleading “no DMA channels” style messages when unrelated async-tx consumers load. This aligns with GPI’s role as a QUP-peripheral-specific DMA controller rather than a general-purpose DMA engine.

Changes:

• Set the DMA_PRIVATE capability on the GPI DMA device during probe to keep it out of the general-purpose DMA allocation paths.

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