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Date: Fri, 16 Jun 2017 10:43:28 +0200
From: Christoph Hellwig <hch@lst.de>
To: Russell King - ARM Linux <linux@armlinux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>, x86@kernel.org,
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Subject: Re: [PATCH 25/44] arm: implement ->mapping_error
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On Thu, Jun 08, 2017 at 03:43:14PM +0100, Russell King - ARM Linux wrote:
> BOn Thu, Jun 08, 2017 at 03:25:50PM +0200, Christoph Hellwig wrote:
> > +static int dmabounce_mapping_error(struct device *dev, dma_addr_t dma_addr)
> > +{
> > +	if (dev->archdata.dmabounce)
> > +		return 0;
> 
> I'm not convinced that we need this check here:
> 
>         dev->archdata.dmabounce = device_info;
>         set_dma_ops(dev, &dmabounce_ops);
> 
> There shouldn't be any chance of dev->archdata.dmabounce being NULL if
> the dmabounce_ops has been set as the current device DMA ops.  So I
> think that test can be killed.

Ok, I'll fix it up.