Commit 7c1119bd authored Nov 28, 2012 by Guennadi Liakhovetski Committed by Vinod Koul Jan 07, 2013

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@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: stable@vger.kernel.org
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>

parent 944ea4dd

drivers/dma/sh/shdma.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -326,7 +326,7 @@ static int sh_dmae_set_slave(struct shdma_chan *schan,
		shdma_chan);
		const struct sh_dmae_slave_config *cfg = dmae_find_slave(sh_chan, slave_id);
		if (!cfg)
		return -ENODEV;
		return -ENXIO;

		if (!try)
		sh_chan->config = cfg;

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