[PATCH 03/24] MIPS: PCI: Use pci_enable_resources()

[Ilpo Järvinen]

pci-legacy.c under MIPS has a copy of pci_enable_resources() named as
pcibios_enable_resources(). Having own copy of same functionality could
lead to inconsistencies in behavior, especially now as
pci_enable_resources() and the bridge window resource flags behavior
are going to be altered by upcoming changes.

The check for !r->start && r->end is already covered by the more
generic checks done in pci_enable_resources().

Call pci_enable_resources() from MIPS's pcibios_enable_device() and
remove pcibios_enable_resources().

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen at linux.intel.com>
---
 arch/mips/pci/pci-legacy.c | 38 ++------------------------------------
 1 file changed, 2 insertions(+), 36 deletions(-)

diff --git a/arch/mips/pci/pci-legacy.c b/arch/mips/pci/pci-legacy.c
index 66898fd182dc..d04b7c1294b6 100644
--- a/arch/mips/pci/pci-legacy.c
+++ b/arch/mips/pci/pci-legacy.c
@@ -249,45 +249,11 @@ static int __init pcibios_init(void)
 
 subsys_initcall(pcibios_init);
 
-static int pcibios_enable_resources(struct pci_dev *dev, int mask)
-{
-	u16 cmd, old_cmd;
-	int idx;
-	struct resource *r;
-
-	pci_read_config_word(dev, PCI_COMMAND, &cmd);
-	old_cmd = cmd;
-	pci_dev_for_each_resource(dev, r, idx) {
-		/* Only set up the requested stuff */
-		if (!(mask & (1<<idx)))
-			continue;
-
-		if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM)))
-			continue;
-		if ((idx == PCI_ROM_RESOURCE) &&
-				(!(r->flags & IORESOURCE_ROM_ENABLE)))
-			continue;
-		if (!r->start && r->end) {
-			pci_err(dev,
-				"can't enable device: resource collisions\n");
-			return -EINVAL;
-		}
-		if (r->flags & IORESOURCE_IO)
-			cmd |= PCI_COMMAND_IO;
-		if (r->flags & IORESOURCE_MEM)
-			cmd |= PCI_COMMAND_MEMORY;
-	}
-	if (cmd != old_cmd) {
-		pci_info(dev, "enabling device (%04x -> %04x)\n", old_cmd, cmd);
-		pci_write_config_word(dev, PCI_COMMAND, cmd);
-	}
-	return 0;
-}
-
 int pcibios_enable_device(struct pci_dev *dev, int mask)
 {
-	int err = pcibios_enable_resources(dev, mask);
+	int err;
 
+	err = pci_enable_resources(dev, mask);
 	if (err < 0)
 		return err;
 
-- 
2.39.5