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...@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovet...@gmx.de>
---
Hi Vinod
Could you please push this patch to Linus for 3.7 ASAP? I think, it should
also go to "stable."
Thanks
Guennadi
drivers/dma/sh/shdma.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/dma/sh/shdma.c b/drivers/dma/sh/shdma.c
index f41bcc5..910d878 100644
--- a/drivers/dma/sh/shdma.c
+++ b/drivers/dma/sh/shdma.c
@@ -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;
--
1.7.2.5
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