On Friday 28 August 2009 05:42:31 Zhu Yi wrote:

Bartlomiej Zolnierkiewicz reported an atomic order-6 allocation failure
for ipw2200 firmware loading in kernel 2.6.30. High order allocation is

s/2.6.30/2.6.31-rc6/

The issue has always been there but it was some recent change that
explicitly triggered the allocation failures (after 2.6.31-rc1).

likely to fail and should always be avoided.

The patch fixes this problem by replacing the original order-6
pci_alloc_consistent() with an array of order-1 pages from a pci pool.
This utilized the ipw2200 DMA command blocks (up to 64 slots). The
maximum firmware size support remains the same (64*8K).

This patch fixes bug http://bugzilla.kernel.org/show_bug.cgi?id=14016

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mel Gorman <redacted>
Signed-off-by: Zhu Yi <redacted>

Thanks for the fix (also kudos to other people helping with the bugreport),
it works fine so far and looks OK to me:

Tested-and-reviewed-by: Bartlomiej Zolnierkiewicz [off-list ref]

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