x86: Use pci_claim_resource

Instead of open-coding pci_find_parent_resource and request_resource,
just call pci_claim_resource.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index a85bef2..0fb56db 100644 (file)
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -116,7 +116,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
        struct pci_bus *bus;
        struct pci_dev *dev;
        int idx;
-       struct resource *r, *pr;
+       struct resource *r;
 
        /* Depth-First Search on bus tree */
        list_for_each_entry(bus, bus_list, node) {
@@ -126,9 +126,8 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
                                r = &dev->resource[idx];
                                if (!r->flags)
                                        continue;
-                               pr = pci_find_parent_resource(dev, r);
-                               if (!r->start || !pr ||
-                                   request_resource(pr, r) < 0) {
+                               if (!r->start ||
+                                   pci_claim_resource(dev, idx) < 0) {
                                        dev_info(&dev->dev, "BAR %d: can't allocate resource\n", idx);
                                        /*
                                         * Something is wrong with the region.
@@ -149,7 +148,7 @@ static void __init pcibios_allocate_resources(int pass)
        struct pci_dev *dev = NULL;
        int idx, disabled;
        u16 command;
-       struct resource *r, *pr;
+       struct resource *r;
 
        for_each_pci_dev(dev) {
                pci_read_config_word(dev, PCI_COMMAND, &command);
@@ -168,8 +167,7 @@ static void __init pcibios_allocate_resources(int pass)
                                        (unsigned long long) r->start,
                                        (unsigned long long) r->end,
                                        r->flags, disabled, pass);
-                               pr = pci_find_parent_resource(dev, r);
-                               if (!pr || request_resource(pr, r) < 0) {
+                               if (pci_claim_resource(dev, idx) < 0) {
                                        dev_info(&dev->dev, "BAR %d: can't allocate resource\n", idx);
                                        /* We'll assign a new address later */
                                        r->end -= r->start;
@@ -197,7 +195,7 @@ static void __init pcibios_allocate_resources(int pass)
 static int __init pcibios_assign_resources(void)
 {
        struct pci_dev *dev = NULL;
-       struct resource *r, *pr;
+       struct resource *r;
 
        if (!(pci_probe & PCI_ASSIGN_ROMS)) {
                /*
@@ -209,8 +207,7 @@ static int __init pcibios_assign_resources(void)
                        r = &dev->resource[PCI_ROM_RESOURCE];
                        if (!r->flags || !r->start)
                                continue;
-                       pr = pci_find_parent_resource(dev, r);
-                       if (!pr || request_resource(pr, r) < 0) {
+                       if (pci_claim_resource(dev, PCI_ROM_RESOURCE) < 0) {
                                r->end -= r->start;
                                r->start = 0;
                        }