[PATCH v2] dmaengine: mediatek: Fix a possible deadlock error in mtk_cqdma_tx_status()

[Vinod Koul]

On Thu, 08 May 2025 15:36:33 +0800, Qiu-ji Chen wrote:
> Fix a potential deadlock bug. Observe that in the mtk-cqdma.c
> file, functions like mtk_cqdma_issue_pending() and
> mtk_cqdma_free_active_desc() properly acquire the pc lock before the vc
> lock when handling pc and vc fields. However, mtk_cqdma_tx_status()
> violates this order by first acquiring the vc lock before invoking
> mtk_cqdma_find_active_desc(), which subsequently takes the pc lock. This
> reversed locking sequence (vc → pc) contradicts the established
> pc → vc order and creates deadlock risks.
> 
> [...]

Applied, thanks!

[1/1] dmaengine: mediatek: Fix a possible deadlock error in mtk_cqdma_tx_status()
      commit: 157ae5ffd76a2857ccb4b7ce40bc5a344ca00395

Best regards,
-- 
~Vinod