Re: [alsa-devel] [PATCH 16/39] firewire-lib: Add some AV/C general commands

(Mar 10 2014 06:32), Clemens Ladisch wrote:

All these functions return errors with two different mechanisms, the AV/C response code or a negative Linux error code. This forces the caller to add a second error check that duplicates the one inside the function:

It's my intension.

Currently firewire-lib doesn't support 'deferred transaction' defined in 'AV/C Digital Interface Command Set General Specification (4.0 or later as long as I know)'. Then each driver needs to judge response codes.

Would there be problems if any response except ACCEPTED resulted in -EIO?

The speakers.c did it. So I just keep it.

(And here, error should be err_buffer.)

Exactly.

Thanks

Takashi Sakamoto o-takashi@sakamocchi.jp