linux-kernel - Re: [PATCH v3 6/7] spi: imx: return error from dma channel request

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Message-ID: <563B7D1C.7010105@gmail.com>
Date:	Thu, 5 Nov 2015 17:00:28 +0100
From:	Anton Bondarenko <anton.bondarenko.sama@...il.com>
To:	Sascha Hauer <s.hauer@...gutronix.de>
Cc:	broonie@...nel.org, b38343@...escale.com,
	linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	vladimir_zapolskiy@...tor.com, jiada_wang@...tor.com
Subject: Re: [PATCH v3 6/7] spi: imx: return error from dma channel request

On 05.11.2015 09:56, Sascha Hauer wrote:
> On Sun, Nov 01, 2015 at 03:41:40PM +0100, Anton Bondarenko wrote:
>> From: Anton Bondarenko <anton_bondarenko@...tor.com>
>>
>> On SDMA initialization return exactly the same error, which is
>> reported by dma_request_slave_channel_reason(), it is a preceding
>> change to defer SPI DMA initialization, if SDMA module is not yet
>> available.
>
> Maybe something like: "fix probe deferral when dmaengine is not yet
> available" in the subject line will better express that this is a patch
> that should be applied ASAP. Also you can move this up to the front of
> the series when resending.
>
> Sascha
>

This patch itself does not implement deferral for spi-imx if dmaengine 
not ready. The patch targets 2 things: give a bit more detailed error 
information of SPI dma slave channel initialization error and provide a 
basis for the next patch ([PATCH v3 7/7] spi: imx: defer spi 
initialization, if DMA engine is pending).

Regards, Anton
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