[Sound-open-firmware] [PATCH] sof: Add volume component state check

[Liam Girdwood]

On Tue, 2018-03-27 at 09:42 +0800, Wu Zhigang wrote:
> Add the state check in volume_copy function,
> this can low down the xrun error possibility:
> For example:
> when firmware receive the PAUSE command, the HOST and VOLUME
> component are set to PAUSE state. at this time DMA IRQ happen,
> the pipeline is scheduled. host_copy() function will be called,
> but jump out immediately because of PAUSE state. but volume_copy()
> did not have this state check, the xrun will happen.
> 
> Signed-off-by: Wu Zhigang <zhigang.wu at linux.intel.com>
> Reviewed-by: Keyon Jie <yang.jie at linux.intel.com>
> 
> 
This is no longer needed since we fixed the locking in your latest patch.

Liam