On 20-06-21, 11:41, Sanjay R Mehta wrote:
> From: Sanjay R Mehta <sanju.mehta@xxxxxxx>
>
> Register ptdma queue to Linux dmaengine framework as general-purpose
> DMA channels.
Mostly looks good, one question below:
> +static struct pt_dma_desc *pt_alloc_dma_desc(struct pt_dma_chan *chan,
> + unsigned long flags)
> +{
> + struct pt_dma_desc *desc;
> +
> + desc = kmem_cache_zalloc(chan->pt->dma_desc_cache, GFP_NOWAIT);
> + if (!desc)
> + return NULL;
> +
> + vchan_tx_prep(&chan->vc, &desc->vd, flags);
> +
> + desc->pt = chan->pt;
> + desc->issued_to_hw = 0;
> + desc->status = DMA_IN_PROGRESS;
where is this descriptor freed?
--
~Vinod
