Re: [v5,04/17] mtd: rawnand: omap2: convert driver to nand_scan()

[Boris Brezillon <boris.brezillon@xxxxxxxxxxx>]

On Thu, 13 Dec 2018 19:01:11 +0100
Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx> wrote:

> > +	/* Re-populate low-level callbacks based on xfer modes */
> > +	switch (info->xfer_type) {
> > +	case NAND_OMAP_PREFETCH_POLLED:
> > +		chip->read_buf = omap_read_buf_pref;
> > +		chip->write_buf = omap_write_buf_pref;
> > +		break;
> > +
> > +	case NAND_OMAP_POLLED:
> > +		/* Use nand_base defaults for {read,write}_buf */
> > +		break;
> > +
> > +	case NAND_OMAP_PREFETCH_DMA:
> > +		dma_cap_zero(mask);
> > +		dma_cap_set(DMA_SLAVE, mask);
> > +		info->dma = dma_request_chan(dev, "rxtx");
> > +
> > +		if (IS_ERR(info->dma)) {
> > +			dev_err(dev, "DMA engine request failed\n");

Can you print the error code here?

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