[alsa-devel] [PATCH v3 1/8] ASoC: topology: ABI - Add flags to PCM

[Mengdong Lin]

On 10/06/2016 10:44 PM, Mark Brown wrote:
> On Thu, Sep 29, 2016 at 02:08:51PM +0800, mengdong.lin at linux.intel.com wrote:
>
>> +	__le32 flag_mask;       /* bitmask of flags to configure */
>> +	__le32 flags;           /* SND_SOC_TPLG_LNK_FLGBIT_* flag value */
>>   } __attribute__((packed));
>
> I just followed up on the userspace patches but to repeat what I was
> saying there I think given that users are actively complaining about
> topology ABI files breaking we need to handle any extensions in a
> backwards compatible fashion.
>

Thanks for your comments!

We'll try to solve this backward compatible issue in kernel. And we'll 
support from topology ABI version 4.

Version 4 is now used by alsa-lib. Before version 4, only Intel use it 
internally and later we moved to version 4.

Thanks
Mengdong