On 19/10/17 23:08, Dmitry Osipenko wrote:
> Currently fuse driver requests DMA channel from an arbitrary DMA device,
> it is not a problem since there is only one DMA provider for Tegra20 yet,
> but it may become troublesome if another provider will appear.
>
> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
> ---
> drivers/soc/tegra/fuse/fuse-tegra20.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/soc/tegra/fuse/fuse-tegra20.c b/drivers/soc/tegra/fuse/fuse-tegra20.c
> index 27e9ac7d3165..49ff017f3ded 100644
> --- a/drivers/soc/tegra/fuse/fuse-tegra20.c
> +++ b/drivers/soc/tegra/fuse/fuse-tegra20.c
> @@ -96,6 +96,13 @@ static u32 tegra20_fuse_read(struct tegra_fuse *fuse, unsigned int offset)
> return value;
> }
>
> +static bool dma_filter(struct dma_chan *chan, void *filter_param)
> +{
> + struct device_node *np = chan->device->dev->of_node;
> +
> + return of_device_is_compatible(np, "nvidia,tegra20-apbdma");
> +}
> +
> static int tegra20_fuse_probe(struct tegra_fuse *fuse)
> {
> dma_cap_mask_t mask;
> @@ -103,7 +110,7 @@ static int tegra20_fuse_probe(struct tegra_fuse *fuse)
> dma_cap_zero(mask);
> dma_cap_set(DMA_SLAVE, mask);
>
> - fuse->apbdma.chan = dma_request_channel(mask, NULL, NULL);
> + fuse->apbdma.chan = __dma_request_channel(&mask, dma_filter, NULL);
> if (!fuse->apbdma.chan)
> return -EPROBE_DEFER;
>
Thanks!
Acked-by: Jon Hunter <jonathanh@xxxxxxxxxx>
Thierry, these are ready for queuing.
Cheers
Jon
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nvpublic
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