[alsa-devel] [PATCH V6 04/10] spi: s3c64xx: Modify SPI driver to use generic DMA DT support

Mark Brown broonie at opensource.wolfsonmicro.com
Tue Jan 29 06:19:46 CET 2013

On Fri, Jan 18, 2013 at 05:17:03PM +0530, Padmavathi Venna wrote:
> This patch modifies the SPI driver to use generic dma dt bindings
> support. This passes all the required arguments to dma dev request
> functon which in turn calls the dma_request_slave_channel or dma__
> request_channel based on DT or non-DT respectively.

This loooks OK and I'm actually applying SPI patches so I could apply it
but I'm not sure I see the relevance of this patch to the rest of the
series (which is about ASoC).  Is there some reason why it's included in
this patch series or can it be applied to the SPI tree?  The SMDKs use
I2C for their CODEC control rather than SPI.

Also is there a binding document update or device tree file update to go
with this?

> +	if (!sdd->pdev->dev.of_node) {
> +		res = platform_get_resource(pdev, IORESOURCE_DMA,  0);
> +		if (!res) {
> +			dev_err(&pdev->dev, "Unable to get SPI tx dma "
> +					"resource\n");

I appreciate that this is cut'n'paste from the code you're refactoring
but please don't split error messages over lines, it makes it hard to
grep for them in the kernel source.
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