On 03/23/2015 10:35 PM, Petr Kulhavy wrote:
> The "data" parameter passed indirectly to the edma_callback() should be
> edma_chan and not the dma_chan.
>
> This bug was so far harmless since the offset of struct dma_chan within struct
> edma_chan is 0. However as soon as someone changes struct edma_chan this would
> cause troubles.
Good catch. This seams to be in the code since the first commit ;)
Acked-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
> Signed-off-by: Petr Kulhavy <petr@xxxxxxxxx>
> ---
> drivers/dma/edma.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
> index 1465610..4c8208b 100644
> --- a/drivers/dma/edma.c
> +++ b/drivers/dma/edma.c
> @@ -813,7 +813,7 @@ static int edma_alloc_chan_resources(struct dma_chan *chan)
> LIST_HEAD(descs);
>
> a_ch_num = edma_alloc_channel(echan->ch_num, edma_callback,
> - chan, EVENTQ_DEFAULT);
> + echan, EVENTQ_DEFAULT);
>
> if (a_ch_num < 0) {
> ret = -ENODEV;
>
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