linux-kernel - Re: [PATCH 3/3] dmaengine: qcom: bam_dma: convert tasklet to a workqueue

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Message-ID: <aSF97DVdACd7h-LI@vaman>
Date: Sat, 22 Nov 2025 14:40:04 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Bartosz Golaszewski <brgl@...ev.pl>
Cc: linux-arm-msm@...r.kernel.org, dmaengine@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH 3/3] dmaengine: qcom: bam_dma: convert tasklet to a
 workqueue

On 06-11-25, 16:44, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 
> There is nothing in the interrupt handling that requires us to run in
> atomic context so convert the tasklet to a workqueue.

The reason dmaengine drivers use tasklets is higher priority to handle
dma interrupts... This is by design for this subsystem.

There was an attempt in past to do conversion away from tasklets [1]:
We need something similar apprach here. I can queue up first two though

1: https://lore.kernel.org/all/20240327160314.9982-1-apais@linux.microsoft.com/
-- 
~Vinod