Hello, Robert. Robert Hancock wrote: > This fixes some problems with ATAPI devices on nForce4 controllers in ADMA > mode on systems with memory located above 4GB. We need to delay setting the > 64-bit DMA mask until the PRD table and padding buffer are allocated so that > they don't get allocated above 4GB and break legacy mode (which is needed for > ATAPI devices). Also, explicitly set a 32-bit DMA mask before allocating the > legacy buffers since setting the DMA mask affects both ports and we need to > ensure the second port's buffers are allocated properly (fixes a problem > with the previous version of this patch). > > Signed-off-by: Robert Hancock <hancockr@xxxxxxx> > > + /* Ensure DMA mask is set to 32-bit before allocating legacy PRD and > + pad buffers */ > + pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); > + pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); [--snip--] > + pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); > + pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); I'm probably being paranoid here but please add error checks. Just checking return value and returning error suffices. Thanks. -- tejun - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
