Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fe6dacdb authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

PCI: reorder __pci_assign_resource() (no change) 



Reorder functions so __pci_assign_resource(), _pci_assign_resource(),
and pci_assign_resource() are closer together.  No code change.

Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent d6776e6d

drivers/pci/setup-res.c

+52 −52
Original line number Diff line number Diff line
@@ -127,33 +127,6 @@ void pci_disable_bridge_window(struct pci_dev *dev) 
	pci_write_config_dword(dev, PCI_PREF_BASE_UPPER32, 0xffffffff);

}



static int __pci_assign_resource(struct pci_bus *bus, struct pci_dev *dev,

		int resno, resource_size_t size, resource_size_t align)

{

	struct resource *res = dev->resource + resno;

	resource_size_t min;

	int ret;



	min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;



	/* First, try exact prefetching match.. */

	ret = pci_bus_alloc_resource(bus, res, size, align, min,

				     IORESOURCE_PREFETCH,

				     pcibios_align_resource, dev);



	if (ret < 0 && (res->flags & IORESOURCE_PREFETCH)) {

		/*

		 * That failed.

		 *

		 * But a prefetching area can handle a non-prefetching

		 * window (it will just not perform as well).

		 */

		ret = pci_bus_alloc_resource(bus, res, size, align, min, 0,

					     pcibios_align_resource, dev);

	}

	return ret;

}



/*

 * Generic function that returns a value indicating that the device's

 * original BIOS BAR address was not saved and so is not available for
@@ -206,6 +179,33 @@ static int pci_revert_fw_address(struct resource *res, struct pci_dev *dev, 
	return ret;

}



static int __pci_assign_resource(struct pci_bus *bus, struct pci_dev *dev,

		int resno, resource_size_t size, resource_size_t align)

{

	struct resource *res = dev->resource + resno;

	resource_size_t min;

	int ret;



	min = (res->flags & IORESOURCE_IO) ? PCIBIOS_MIN_IO : PCIBIOS_MIN_MEM;



	/* First, try exact prefetching match.. */

	ret = pci_bus_alloc_resource(bus, res, size, align, min,

				     IORESOURCE_PREFETCH,

				     pcibios_align_resource, dev);



	if (ret < 0 && (res->flags & IORESOURCE_PREFETCH)) {

		/*

		 * That failed.

		 *

		 * But a prefetching area can handle a non-prefetching

		 * window (it will just not perform as well).

		 */

		ret = pci_bus_alloc_resource(bus, res, size, align, min, 0,

					     pcibios_align_resource, dev);

	}

	return ret;

}



static int _pci_assign_resource(struct pci_dev *dev, int resno,

				resource_size_t size, resource_size_t min_align)

{
@@ -239,31 +239,6 @@ static int _pci_assign_resource(struct pci_dev *dev, int resno, 
	return ret;

}



int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsize,

			resource_size_t min_align)

{

	struct resource *res = dev->resource + resno;

	resource_size_t new_size;

	int ret;



	if (!res->parent) {

		dev_info(&dev->dev, "BAR %d: can't reassign an unassigned resource %pR "

			 "\n", resno, res);

		return -EINVAL;

	}



	/* already aligned with min_align */

	new_size = resource_size(res) + addsize;

	ret = _pci_assign_resource(dev, resno, new_size, min_align);

	if (!ret) {

		res->flags &= ~IORESOURCE_STARTALIGN;

		dev_info(&dev->dev, "BAR %d: reassigned %pR\n", resno, res);

		if (resno < PCI_BRIDGE_RESOURCES)

			pci_update_resource(dev, resno);

	}

	return ret;

}



int pci_assign_resource(struct pci_dev *dev, int resno)

{

	struct resource *res = dev->resource + resno;
@@ -299,6 +274,31 @@ int pci_assign_resource(struct pci_dev *dev, int resno) 
	return ret;

}



int pci_reassign_resource(struct pci_dev *dev, int resno, resource_size_t addsize,

			resource_size_t min_align)

{

	struct resource *res = dev->resource + resno;

	resource_size_t new_size;

	int ret;



	if (!res->parent) {

		dev_info(&dev->dev, "BAR %d: can't reassign an unassigned resource %pR "

			 "\n", resno, res);

		return -EINVAL;

	}



	/* already aligned with min_align */

	new_size = resource_size(res) + addsize;

	ret = _pci_assign_resource(dev, resno, new_size, min_align);

	if (!ret) {

		res->flags &= ~IORESOURCE_STARTALIGN;

		dev_info(&dev->dev, "BAR %d: reassigned %pR\n", resno, res);

		if (resno < PCI_BRIDGE_RESOURCES)

			pci_update_resource(dev, resno);

	}

	return ret;

}



int pci_enable_resources(struct pci_dev *dev, int mask)

{

	u16 cmd, old_cmd;