RE: [EXT] Re: [PATCH] i2c: imx: Defer probing if EDMA not available

Peng Ma
2019-11-28T02:45:58Z

>-----Original Message-----
>From: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
>Sent: 2019年11月27日 15:27
>To: Peng Ma <peng.ma@nxp.com>
>Cc: linux@rempel-privat.de; kernel@pengutronix.de; shawnguo@kernel.org;
>s.hauer@pengutronix.de; linux-kernel@vger.kernel.org; dl-linux-imx
><linux-imx@nxp.com>; festevam@gmail.com;
>linux-arm-kernel@lists.infradead.org; linux-i2c@vger.kernel.org
>Subject: [EXT] Re: [PATCH] i2c: imx: Defer probing if EDMA not available
>
>Caution: EXT Email
>
>Hello,
>
>On Wed, Nov 27, 2019 at 07:12:09AM +0000, Peng Ma wrote:
>> EDMA may be not available or defered due to dependencies on other
>> modules, If these scenarios is encountered, we should defer probing.
>
>I'd write:
>
> i2c: imx: Defer probing if requesting DMA yields EPROBE_DEFER
>
> DMA might not be available yet when the i2c device probes.
> Properly handle EPROBE_DEFER on dma channel allocation by
> passing on this error.
>
>It would be nice to point out where/how this failed for you.
>
>Other than that this looks reasonable.
>
Hi, Uwe,

Thanks very much for your comments, That looks good.

Best Regards,
Peng
>Best regards
>Uwe
>
>--
>Pengutronix e.K. | Uwe Kleine-König
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