linux-kernel - RE: [PATCH 3.7] dma: sh: Don't use ENODEV for failing slave lookup

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Date:	Mon, 3 Dec 2012 17:48:27 +0000
From:	"Koul, Vinod" <vinod.koul@...el.com>
To:	Guennadi Liakhovetski <g.liakhovetski@....de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:	"linux-sh@...r.kernel.org" <linux-sh@...r.kernel.org>,
	Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
Subject: RE: [PATCH 3.7] dma: sh: Don't use ENODEV for failing slave lookup

> 
> If dmaengine driver's .device_alloc_chan_resources() method returns -ENODEV,
> dma_request_channel() will decide, that the driver has been removed and will remove
> the device from its list. To prevent this use ENXIO if a slave lookup fails.
> 
> Reported-by: Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@....de>
Applied thanks, CCed stable as well

--
~Vinod
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