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skge: check for PCI dma mapping errors
authorstephen hemminger <shemminger@vyatta.com>
Thu, 19 Jan 2012 14:37:18 +0000 (14:37 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 22 Jan 2012 20:08:44 +0000 (15:08 -0500)
Driver should check for mapping errors.
Machines with limited DMA maps may return an error when a PCI map is
requested (not an issue on standard x86).

Also use upper/lower 32 bits macros for clarity.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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