[PATCH v3] pxa2xx_spi: fix memory corruption

[Russell King - ARM Linux]

On Thu, Jul 14, 2011 at 08:53:31PM -0600, Grant Likely wrote:
> > +	u8 null_dma_buf_unaligned[16];
> 
> Don't dma buffers need to be cache-line aligned?  How large is the
> actual transfer?  Using the __aligned() or __cacheline_aligned
> attribute is the correct way to make sure you've got a data buffer
> that can be used for DMA mixed with other stuff.  Then you don't need
> to fool around with PTR_ALIGN or anything.

Err, did you not read the whole patch?

> > +	drv_data->null_dma_buf =
> > +		(u32 *)PTR_ALIGN(&drv_data->null_dma_buf_unaligned, 8);