[alsa-devel] [PATCH v7 01/11] ASoC: topology: Make PCM backward compatible from ABI v4

[Mark Brown]

On Thu, Nov 03, 2016 at 01:00:16AM +0800, mengdong.lin at linux.intel.com wrote:
> From: Mengdong Lin <mengdong.lin at linux.intel.com>
> 
> This patch adds support for old version 4 of PCMs (FE DAI & DAI links).
> 
> Topology ABI v5 added new fields to stream caps and thus changed PCMs.
> Since user space may still uses v4, kernel will check the ABI version by
> comparing the object size. If user space uses v4 of PCMs, kernel will

This only applies on -next, not on v4.9 but this is a bug fix which we
should really get into v4.9.  
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