[PATCH v2 2/2] dmaengine: apple-admac: Add Apple ADMAC driver

[Vinod Koul]

On 12-04-22, 00:22, Martin Povišer wrote:

> +struct admac_chan {
> +	int no;

Unsigned int perhaps?

> +static int admac_desc_free(struct dma_async_tx_descriptor *tx)
> +{
> +	struct admac_tx *adtx = to_admac_tx(tx);
> +
> +	devm_kfree(to_admac_chan(tx->chan)->host->dev, adtx);

Why use devm for descriptor memory?

> +static int admac_device_config(struct dma_chan *chan,
> +			       struct dma_slave_config *config)
> +{
> +	struct admac_chan *adchan = to_admac_chan(chan);
> +	struct admac_data *ad = adchan->host;
> +	bool is_tx = admac_chan_direction(adchan->no) == DMA_MEM_TO_DEV;

so are the channel directions hard wired in hardware?

-- 
~Vinod