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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2012-11-28 06:49:47 +0000
committerVinod Koul <vinod.koul@intel.com>2013-01-07 22:05:06 -0800
commit7c1119bdd650fa58dad8157bc75c5fcf6ed97843 (patch)
treef0694e33203d6c7f8db1f0904702a66480c3779b /drivers/dma/sh
parent944ea4dd38b8575e30a5699633c81945bff1864d (diff)
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>
Diffstat (limited to 'drivers/dma/sh')
-rw-r--r--drivers/dma/sh/shdma.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/sh/shdma.c b/drivers/dma/sh/shdma.c
index 8201bb4e0cd7..62eff4800521 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;