RE: [PATCH net-next 07/10] net: stmmac: Enable support for > 32 Bits addressing in XGMAC

[Jose Abreu]

From: Andrew Lunn <andrew@xxxxxxx>

> > +
> > +	if (priv->dma_cap.addr64) {
> > +		ret = dma_set_mask_and_coherent(device,
> > +				DMA_BIT_MASK(priv->dma_cap.addr64));
> > +		if (!ret)
> > +			dev_info(priv->device, "Using %d bits DMA width\n",
> > +				 priv->dma_cap.addr64);
> > +	}
> 
> Hi Jose
> 
> If dma_set_mask_and_coherent() fails, i think you are supposed to fall
> back to 32 bits. So you might want to clear priv->dma_cap.addr64.

Yeah, seems right. Thanks for pointing!