Oleksandr Tymoshenko 3a48aebfbe [rpi] Fix bcm2835_audio locking and samples starvation ... Rework general approach to locking and working with audio worker thread: - Use flags to signal requested worker action - Fix submitted buffer calculations to avoid samples starvation - Protect buffer pointers with locks to fix race condition between callback and audio worker thread - Remove unnecessary vchi_service_use - Do not use lock to serialize VCHI requests since only one thread issues them now - Fix unloading signaling per hselasky@ suggestion - Add output to detect inconsistent callback data caused by possible firmware bug https://github.com/raspberrypi/firmware/issues/696 - Add stats/debug sysctls to troubleshoot possible bugs PR: 213687, 205979, 215194 MFC after: 1 week		2016-12-27 19:08:08 +00:00
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bcm2835	[rpi] Fix bcm2835_audio locking and samples starvation	2016-12-27 19:08:08 +00:00