[alsa-devel] [PATCH v3 1/3] ASoC: rockchip: i2s: add 8 channels capture support

[Mark Brown]

On Fri, Nov 06, 2015 at 09:38:09AM +0800, Sugar Zhang wrote:

> +	/* refine capture channels */
> +	if (!of_property_read_u32(node, "rockchip,capture-channels", &val)) {
> +		if (val >= 2 && val <= 8)
> +			rockchip_i2s_dai.capture.channels_max = val;
> +		else
> +			rockchip_i2s_dai.capture.channels_max = 2;
> +	}

You should make a copy of the rockchip_i2s_dai struct in your driver
data and modify that rather than modifying the original - what happens
if sommeone makes a SoC with two I2S DAIs, one with many channels and
another with only two?  Samsung SoCs often have an arrangement like that
for exmaple.
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