Commit 6fdc99a2 authored Jul 26, 2007 by Alan Cox Committed by Jeff Garzik Aug 01, 2007

libata-sff; Unbreak non DMA capable controllers again



Seems nobody else is checking/testing this case as it keeps getting
horked.

If we have no BAR4 mapping on an SFF controller this is *NOT* an error,
it just means it isn't doing BMDMA.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

parent dbf0c89c

drivers/ata/libata-sff.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -573,6 +573,10 @@ int ata_pci_init_bmdma(struct ata_host *host)
		struct pci_dev *pdev = to_pci_dev(gdev);
		int i, rc;

		/* No BAR4 allocation: No DMA */
		if (pci_resource_start(pdev, 4) == 0)
		return 0;

		/* TODO: If we get no DMA mask we should fall back to PIO */
		rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
		if (rc)