Instead of printing the '=== PAUSE ===' unconditionally before calling do_pause(), move it to the function and only print it if the stream can be paused.
If the stream cannot be paused that the '=== PAUSE ===' will be replaced by PAUSE command ignored (no hw support) immediately, which is not observable by users but automation scripts will catch the '=== PAUSE ===' and might think that the stream is indeed got paused.
Move the print into do_pause() function after the snd_pcm_pause() have returned without error to make sure it is only printed if the stream is paused and we are waiting for the pause release from user to proceed.
Instead of printing the '=== PAUSE ===' unconditionally before calling do_pause(), move it to the function and only print it if the stream can be paused.
If the stream cannot be paused that the '=== PAUSE ===' will be replaced by
PAUSE command ignored (no hw support)immediately, which is not observable by users but automation scripts will catch the '=== PAUSE ===' and might think that the stream is indeed got paused.Move the print into do_pause() function after the snd_pcm_pause() have returned without error to make sure it is only printed if the stream is paused and we are waiting for the pause release from user to proceed.