From: Govindarajulu Varadarajan <redacted>
Date: Wed, 24 Dec 2014 15:59:35 +0530

After dma mapping the buffers, enic does not call dma_mapping_error() to check
if mapping is successful.

This series fixes the issue by checking return value of pci_dma_mapping_error()
after pci_map_single().

This is reported by redhat here
https://bugzilla.redhat.com/show_bug.cgi?id=1145016

Series applied, thank you.