Man page 9 : blk_post_runtime_suspend

blk_post_runtime_suspend - Post runtime suspend processing

void blk_post_runtime_suspend(struct request_queue *  q , int  err );

q
    the queue of the device

err
    return value of the deviceAqs runtime_suspend function

Update the queueAqs runtime status according to the return value of the deviceAqs runtime suspend function and mark last busy for the device so that PM core will try to auto suspend the device at a later time.

This function should be called near the end of the deviceAqs runtime_suspend callback.