linux-kernel - Re: [PATCH V3 2/3] dmaengine: dw_dmac: Enhance device tree support

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Message-ID: <CAKohpokEXAGD-nUF6u8tugvF2ffJx3HLLd+Zgc2+6GB9hxnT6Q@mail.gmail.com>
Date:	Fri, 26 Oct 2012 14:25:36 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	vinod.koul@...el.com
Cc:	linux-kernel@...r.kernel.org, spear-devel@...t.st.com,
	andriy.shevchenko@...ux.intel.com,
	linux-arm-kernel@...ts.infradead.org,
	devicetree-discuss@...ts.ozlabs.org,
	Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [PATCH V3 2/3] dmaengine: dw_dmac: Enhance device tree support

Hi Vinod,

On 16 October 2012 09:49, Viresh Kumar <viresh.kumar@...aro.org> wrote:
> dw_dmac driver already supports device tree but it used to have its platform
> data passed the non-DT way.
>
> This patch does following changes:
> - pass platform data via DT, non-DT way still takes precedence if both are used.
> - create generic filter routine
> - Earlier slave information was made available by slave specific filter routines
>   in chan->private field. Now, this information would be passed from within dmac
>   DT node. Slave drivers would now be required to pass bus_id (a string) as
>   parameter to this generic filter(), which would be compared against the slave
>   data passed from DT, by the generic filter routine.
> - Update binding document

I can see that you applied these patches and they are present in
linux-next. But i feel
the order of patches is bad.

git log --oneline gives following:

879a0ec dmaengine: dw_dmac: Update documentation style comments for
dw_dma_platform_data
d0e35f3 dmaengine: dw_dmac: Enhance device tree support
4c4c30c ARM: SPEAr13xx: Pass DW DMAC platform data from DT

The last patch "ARM: SPEAr13xx: Pass DW DMAC platform data from DT" has
dependency on second patch.

The correct order would be:
4c4c30c ARM: SPEAr13xx: Pass DW DMAC platform data from DT
d0e35f3 dmaengine: dw_dmac: Enhance device tree support
879a0ec dmaengine: dw_dmac: Update documentation style comments for
dw_dma_platform_data


PS: We are looking at output of git log. Last patch (or first from
bottom) was applied first.

--
viresh
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