Author: Tina Johnson <tinajohnson.1234@gmail.com> Added a pci_dma_mapping_error() call to check for mapping errors before further using the dma handle. In case of error, control goes to a new label where the incoming skb is freed. Unchecked dma handles were found using Coccinelle: @rule1@ expression e1; identifier x; @@ *x = pci_map_single(…); … when != pci_dma_mapping_error(e1,x) …