[U-Boot] [PATCH v2] mmc: mxsmmc: Fix operation with DMA

[Anatolij Gustschin <agust@denx.de>]

Hi Fabio,

On Mon, 2 Apr 2012 16:18:18 -0300
Fabio Estevam <festevam@gmail.com> wrote:

> On Mon, Apr 2, 2012 at 4:03 PM, Marek Vasut <marex@denx.de> wrote:
> 
> > Because that's called before relocation ;-)
> 
> What about this?
> 
> --- a/drivers/dma/apbh_dma.c
> +++ b/drivers/dma/apbh_dma.c
> @@ -35,6 +35,7 @@
> 
>  static struct mxs_dma_chan mxs_dma_channels[MXS_MAX_DMA_CHANNELS];
> 
> +static int first;
>  /*
>   * Test is the DMA channel is valid channel
>   */
> @@ -346,6 +347,10 @@ struct mxs_dma_desc *mxs_dma_desc_alloc(void)
>         struct mxs_dma_desc *pdesc;
>         uint32_t size;
> 
> +       if (!first)
> +               mxs_dma_init();
> +       first++;
> +
>         size = roundup(sizeof(struct mxs_dma_desc), MXS_DMA_ALIGNMENT);
>         pdesc = memalign(MXS_DMA_ALIGNMENT, size);
> 
> Too ugly? Or any better place for calling  mxs_dma_init()?

Won't calling mxs_dma_init() from arch_misc_init() work?

Thanks,
Anatolij