[alsa-devel] [PATCH] ASoC: dapm: Don't add prefix to widget stream name

[Lars-Peter Clausen]

On 07/21/2015 03:54 PM, Koro Chen wrote:
> On Tue, 2015-07-21 at 11:51 +0200, Lars-Peter Clausen wrote:
>> Commit fdb6eb0a1287 ("ASoC: dapm: Modify widget stream name according to
>> prefix") fixed the case where a DAPM route between a DAI widget and a
>> DAC/ADC/AIF widget with a matching stream name was not created when the
>> DAPM context was using a prefix.
>>
>> Unfortunately the patch introduced a few issues on its own like leaking the
>> dynamically allocated stream name memory and also not checking whether the
>> allocation succeeded in the first place.
>>
>> It is also incomplete in that it still does not handle the case where
>> stream name of the widget is a substring of the stream name of the DAI,
>> which is explicitly allowed and works fine if no DAPM prefix is used.
>>
> I think your solution looks reasonable.
> However, just curious, why didn't we use strstr(dai_w->name, w->sname)
> in the first place?

It's probably just an oversight when the code was developed initially.