Source of kfifo.c - linux-imx - PHYTEC BitBucket (Stash)

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    fifo->in = 0;
    fifo->out = 0;
    fifo->esize = esize;
​
    if (size < 2) {
        fifo->data = NULL;
        fifo->mask = 0;
        return -EINVAL;
    }
​
    fifo->data = kmalloc(size * esize, gfp_mask);
    fifo->data = kmalloc_array(esize, size, gfp_mask);
​
    if (!fifo->data) {
        fifo->mask = 0;
        return -ENOMEM;
    }
    fifo->mask = size - 1;
​
    return 0;
}
EXPORT_SYMBOL(__kfifo_alloc);