tree f3d0133df8c9a46135148e34b0a553849153c04f
parent b08bd5c0a3110f143faeef9cd057d9d8ff2f0714
author Michael Ellerman <michael@ellerman.id.au> 1125538147 +1000
committer Jeff Garzik <jgarzik@pobox.com> 1125542383 -0400

[PATCH] iseries_veth: Only call dma_unmap_single() if dma_map_single() succeeded

The iseries_veth driver unconditionally calls dma_unmap_single() even
when the corresponding dma_map_single() may have failed.

Rework the code a bit to keep the return value from dma_unmap_single()
around, and then check if it's a dma_mapping_error() before we do
the dma_unmap_single().

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>