Re: [Linux-ia64] Re: 64 Bits DMA Addresses for Alloc Consistent Interfaces.

From: David S. Miller <davem_at_redhat.com>
Date: 2003-05-17 14:34:42
   From: Grant Grundler <iod00d@hp.com>
   Date: Fri, 16 May 2003 21:26:10 -0700

   On Fri, May 16, 2003 at 04:40:25PM -0700, Jeremy Higdon wrote:
   > -	/* pci_alloc_consistent gives only non-DAC addresses */
   > -	test_desc.addr_hi = 0;
   > +	test_desc.addr_hi = ((u64) buf_dma >> 32);
   >  	test_desc.addr_lo = buf_dma & 0xffffffff;
   
   Just curious, is the "& 0xffffffff" really necessary?
   I was expecting "(u32) buf_dma" to be sufficient.

Not necessary, just a stylistic choice.
Received on Fri May 16 21:35:32 2003

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