This adds documentation for error handling, locking and streams.
Signed-off-by: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: NSanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: NShreyas NC <shreyas.nc@intel.com>
Signed-off-by: NVinod Koul <vkoul@kernel.org>