linux-kernel - Re: [PATCH] mtd: nand: pxa3xx-nand: switch to dmaengine

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Message-ID: <87twr8ws6k.fsf@belgarion.home>
Date:	Sat, 05 Sep 2015 22:02:27 +0200
From:	Robert Jarzmik <robert.jarzmik@...e.fr>
To:	Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Cc:	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: nand: pxa3xx-nand: switch to dmaengine

Ezequiel Garcia <ezequiel@...guardiasur.com.ar> writes:

> Robert,
>
> Just a couple of minor comments.
>> +	dma_unmap_sg(info->dma_chan->device->dev,
>> +		     &info->sg, 1, info->dma_dir);
>
> Unneeded line breaking.
Indeed, for v2.

>> +		r = platform_get_resource(pdev, IORESOURCE_DMA, 1);
>> +		if (r == NULL) {
>> +			dev_err(&pdev->dev,
>> +				"no resource defined for cmd DMA\n");
>> +			ret = -ENXIO;
>> +			goto fail_disable_clk;
>> +		}
>> +		info->drcmr_cmd = r->start;
>
> AFAICS, you only do data DMA, so this command resource can go away.
> If you want to keep it for now and remove it as a follow up patch,
> that's fine.
Yeah, keep it in this patch, and change in a future patch (ie. keep current
behavior).

> Other than this minor stuff:
>
> Reviewed-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
> Tested-by: Ezequiel Garcia <ezequiel@...guardiasur.com.ar>
Thanks, I'll add that in v2.

> Tested on Armada 370 to make sure it doesn't cause any regressions.
Good. Was it on top of linux-next or linux master ?

Cheers.

-- 
Robert
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