Re: [PATCH 1/1] mmc: host: enable OMAP DMA engine support for omap hosts by default

["Shilimkar, Santosh" <santosh.shilimkar@xxxxxx>]

Hi,

On Tue, Jul 17, 2012 at 6:00 AM, Javier Martinez Canillas
<javier@xxxxxxxxxxxx> wrote:
> The OMAP MMC and OMAP High Speed MMC hosts now use entirely the DMA
> engine API instead of the previous private DMA API implementation.
>
> So, if the kernel is built with support for any of these hosts but it
> doesn't support DMA devices nor OMAP DMA support, it fails when trying
> to obtain a DMA channel which leads to the following error on an OMAP3
> IGEPv2 Rev.C board (and probably on most OMAP boards with MMC support):
>
> [    2.199981] omap_hsmmc omap_hsmmc.1: unable to obtain RX DMA engine channel 48
> [    2.215087] omap_hsmmc omap_hsmmc.0: unable to obtain RX DMA engine channel 62
>
> selecting automatically CONFIG_DMADEVICES and CONFIG_DMA_OMAP solves it.
>
> Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxx>
> ---
Considering, we are updating drivers to select the DMA engine, can you
also include
"drivers/spi/spi-omap2-mcspi.c" which is also updated for DMA engine.

Regards
Santosh
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