Messages in this thread Patch in this message | | | Date | Wed, 28 Nov 2012 07:49:47 +0100 (CET) | From | Guennadi Liakhovetski <> | Subject | [PATCH 3.7] dma: sh: Don't use ENODEV for failing slave lookup |
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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> ---
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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