diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-11-28 06:49:47 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-28 05:38:42 -0800 |
| commit | 255ad6f9222cc28a7c76157fdeda8aa46029c34d (patch) | |
| tree | cca091a9ff861caf033b99f01cbe6a197cac51d7 | |
| parent | 3a7b023830c56a1cf1d4fa8bcda1a94afc00b6d7 (diff) | |
dma: sh: Don't use ENODEV for failing slave lookup
commit 7c1119bdd650fa58dad8157bc75c5fcf6ed97843 upstream.
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>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | 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 3315e4be9b8..b70709b030d 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; |