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