DMA Engine development
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From: "李佑鸿 " <dayou5941@163.com>
To: "Vinod Koul" <vkoul@kernel.org>
Cc: Eugeniy.Paltsev@synopsys.com, Frank.Li@kernel.org,
	dmaengine@vger.kernel.org, "Li Youhong" <liyouhong@kylinos.cn>,
	"Frank Li" <Frank.Li@nxp.com>
Subject: Re:Re: [PATCH v4] dmaengine: dw-axi-dmac: convert to clk bulk APIs
Date: Thu, 10 Sep 2026 10:46:27 +0800 (CST)	[thread overview]
Message-ID: <590e2040.293c.1a089359df2.Coremail.dayou5941@163.com> (raw)
In-Reply-To: <aqFQHtOhhPOEmh8E@parshuram>




Hi Vinod,

Thanks for the review.


At 2026-09-09 20:25:02, "Vinod Koul" <vkoul@kernel.org> wrote:
>On 03-09-26, 09:54, Li Youhong wrote:
>> From: Li Youhong <liyouhong@kylinos.cn>
>> 
>> axi_dma_resume() enables cfgr_clk then core_clk. If enabling
>> core_clk fails, return without disabling cfgr_clk, leaking the
>> already-enabled clock.
>> 
>> Switch both clocks to the clk bulk helpers so prepare/enable
>> failures roll back automatically, and update probe/remove/
>> suspend/resume accordingly.
>> 
>> In dw_remove(), check clk_bulk_prepare_enable(). On failure skip
>> MMIO and the matching disable to avoid unbalanced clk disable;
>> always continue with IRQ/OF/tasklet teardown.
>
>Hey, this doesnot apply against current code, can you rebase and send

When I rebased onto the dmaengine/next branch, I found this issue has already been fixed by commit:
c843417e6d6b ("dmaengine: dw-axi-dmac: convert clock handling to clk_bulk API")

So I will drop this patch series.

>> 
>> Fixes: 1fe20f1b8454 ("dmaengine: Introduce DW AXI DMAC driver")
>
>why is this a fix?

>

Regarding the Fixes tag: starting from commit 1fe20f1b8454, axi_dma_resume() enables cfgr_clk 
first and then core_clk. If enabling core_clk fails, the function returns immediately without 
disabling the already enabled cfgr_clk. That is why I referenced that Fixes commit. Now that 
c843417e6d6b is in mainline, my patch is no longer needed.

Sorry for the noise.

Thanks,
Li Youhong

>-- 
>~Vinod

      reply	other threads:[~2026-09-10  2:46 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-03  1:54 [PATCH v4] dmaengine: dw-axi-dmac: convert to clk bulk APIs Li Youhong
2026-09-03  2:06 ` sashiko-bot
2026-09-04 15:45 ` Frank Li
2026-09-09 12:25 ` Vinod Koul
2026-09-10  2:46   ` 李佑鸿  [this message]

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