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Commit 2044f228 authored by Linus Torvalds's avatar Linus Torvalds
Browse files
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: fall back to original BIOS BAR addresses
parents bea9a6d2 58c84eda
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+1 −0
Original line number Diff line number Diff line
@@ -184,6 +184,7 @@ static void __init pcibios_allocate_resources(int pass)
					idx, r, disabled, pass);
				if (pci_claim_resource(dev, idx) < 0) {
					/* We'll assign a new address later */
					dev->fw_addr[idx] = r->start;
					r->end -= r->start;
					r->start = 0;
				}
+32 −0
Original line number Diff line number Diff line
@@ -156,6 +156,38 @@ static int __pci_assign_resource(struct pci_bus *bus, struct pci_dev *dev,
					     pcibios_align_resource, dev);
	}

	if (ret < 0 && dev->fw_addr[resno]) {
		struct resource *root, *conflict;
		resource_size_t start, end;

		/*
		 * If we failed to assign anything, let's try the address
		 * where firmware left it.  That at least has a chance of
		 * working, which is better than just leaving it disabled.
		 */

		if (res->flags & IORESOURCE_IO)
			root = &ioport_resource;
		else
			root = &iomem_resource;

		start = res->start;
		end = res->end;
		res->start = dev->fw_addr[resno];
		res->end = res->start + size - 1;
		dev_info(&dev->dev, "BAR %d: trying firmware assignment %pR\n",
			 resno, res);
		conflict = request_resource_conflict(root, res);
		if (conflict) {
			dev_info(&dev->dev,
				 "BAR %d: %pR conflicts with %s %pR\n", resno,
				 res, conflict->name, conflict);
			res->start = start;
			res->end = end;
		} else
			ret = 0;
	}

	if (!ret) {
		res->flags &= ~IORESOURCE_STARTALIGN;
		dev_info(&dev->dev, "BAR %d: assigned %pR\n", resno, res);
+1 −0
Original line number Diff line number Diff line
@@ -288,6 +288,7 @@ struct pci_dev {
	 */
	unsigned int	irq;
	struct resource resource[DEVICE_COUNT_RESOURCE]; /* I/O and memory regions + expansion ROMs */
	resource_size_t	fw_addr[DEVICE_COUNT_RESOURCE]; /* FW-assigned addr */

	/* These fields are used by common fixups */
	unsigned int	transparent:1;	/* Transparent PCI bridge */