On 08/24/2011 11:06 AM, Michael Büsch wrote:
On Wed, 24 Aug 2011 17:57:18 +0200
Rafał Miłecki<zajec5@xxxxxxxxx> wrote:
+ /* For unknown reasons - possibly a hardware error - the BCM4311 rev
* 02, which uses 64-bit DMA, needs the ring buffer in very low memory,
* which accounts for the GFP_DMA flag below.
- *
- * The flags here must match the flags in free_ringmemory below!
*/
+ gfp_t flags = GFP_KERNEL;
if (ring->type == B43_DMA_64BIT)
flags |= GFP_DMA;
Did somebody actually re-evaluate this?
I still believe that this is not a hardware error, but rather a software
bug in the DMA allocator that probably is fixed already.
Larry, I think you added this. Do you still have the device that triggered this?
Yes, I do. I'll test the BCM4311 with the GFP_KERNEL flag.
Larry
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