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Re: [PATCH stable] b43: Backport bcm4311 fix

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On Sat, Mar 1, 2008 at 3:29 AM, Greg KH <greg@xxxxxxxxx> wrote:
> On Fri, Feb 29, 2008 at 12:55:41PM +0100, Michael Buesch wrote:
>  >     The changes include the following:
>  >
>  >     (1) Add the 802.11 rev 13 device to the ssb_device_id table to load b43.
>  >     (2) Add PHY revision 9 to the supported list.
>  >     (3) Change the 2-bit routing code for address extensions to 0b10 rather
>  >         than the 0b01 used for the 32-bit case.
>  >     (4) Remove some magic numbers in the DMA setup.
>  >
>  >     The DMA implementation for this chip supports full 64-bit addressing with
>  >     one exception. Whenever the Descriptor Ring Buffer is in high memory, a
>  >     fatal DMA error occurs. This problem was not present in 2.6.24-rc2 due
>  >     to code to "Bias the placement of kernel pages at lower PFNs". When
>  >     commit 44048d70 reverted that code, the DMA error appeared. As a "fix",
>  >     use the GFP_DMA flag when allocating the buffer for 64-bit DMA. At present,
>  >     this problem is thought to arise from a hardware error.
>
>  Is this logic upstream in 2.6.25-rcX already?  If so, do you have a git
>  id for it so that I can match them up?
>

Commit 013978b688d2a27af3ab55ca739e8c8ac7254870


>  thanks,
>
>  greg k-h
>
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