2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Krzysztof Halasa [ Upstream commit 303d67c288319768b19ed8dbed429fef7eb7c275 ] E100 places it's RX packet descriptors inside skb->data and uses them with bidirectional streaming DMA mapping. Unfortunately it fails to transfer skb->data ownership to the device after it reads the descriptor's status, breaking on non-coherent (e.g., ARM) platforms. This have to be converted to use coherent memory for the descriptors. Signed-off-by: Krzysztof Halasa Acked-by: Jeff Kirsher Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/e100.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/net/e100.c +++ b/drivers/net/e100.c @@ -1840,6 +1840,9 @@ static int e100_rx_indicate(struct nic * if (ioread8(&nic->csr->scb.status) & rus_no_res) nic->ru_running = RU_SUSPENDED; + pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr, + sizeof(struct rfd), + PCI_DMA_BIDIRECTIONAL); return -ENODATA; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/