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SubjectRe: [PATCH] PCI fixes for 2.5.62
ChangeSet 1.1006, 2003/02/20 16:32:48-08:00, louis.zhuang@linux.co.intel.com

[PATCH] PCI: list code cleanup

Cleans up the list handling in a few places within the pci core.


diff -Nru a/drivers/pci/probe.c b/drivers/pci/probe.c
--- a/drivers/pci/probe.c Thu Feb 20 16:46:23 2003
+++ b/drivers/pci/probe.c Thu Feb 20 16:46:23 2003
@@ -556,10 +556,9 @@

int __devinit pci_bus_exists(const struct list_head *list, int nr)
{
- const struct list_head *l;
+ const struct pci_bus *b;

- for(l=list->next; l != list; l = l->next) {
- const struct pci_bus *b = pci_bus_b(l);
+ list_for_each_entry(b, list, node) {
if (b->number == nr || pci_bus_exists(&b->children, nr))
return 1;
}
diff -Nru a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
--- a/drivers/pci/setup-bus.c Thu Feb 20 16:46:23 2003
+++ b/drivers/pci/setup-bus.c Thu Feb 20 16:46:23 2003
@@ -39,14 +39,13 @@
static int __devinit
pbus_assign_resources_sorted(struct pci_bus *bus)
{
- struct list_head *ln;
+ struct pci_dev *dev;
struct resource *res;
struct resource_list head, *list, *tmp;
int idx, found_vga = 0;

head.next = NULL;
- for (ln=bus->devices.next; ln != &bus->devices; ln=ln->next) {
- struct pci_dev *dev = pci_dev_b(ln);
+ list_for_each_entry(dev, &bus->devices, bus_list) {
u16 class = dev->class >> 8;

if (class == PCI_CLASS_DISPLAY_VGA
@@ -201,15 +200,14 @@
static void __devinit
pbus_size_io(struct pci_bus *bus)
{
- struct list_head *ln;
+ struct pci_dev *dev;
struct resource *b_res = bus->resource[0];
unsigned long size = 0, size1 = 0;

if (!(b_res->flags & IORESOURCE_IO))
return;

- for (ln=bus->devices.next; ln != &bus->devices; ln=ln->next) {
- struct pci_dev *dev = pci_dev_b(ln);
+ list_for_each_entry(dev, &bus->devices, bus_list) {
int i;

for (i = 0; i < PCI_NUM_RESOURCES; i++) {
@@ -250,7 +248,7 @@
static void __devinit
pbus_size_mem(struct pci_bus *bus, unsigned long mask, unsigned long type)
{
- struct list_head *ln;
+ struct pci_dev *dev;
unsigned long min_align, align, size;
unsigned long aligns[12]; /* Alignments from 1Mb to 2Gb */
int order, max_order;
@@ -261,8 +259,7 @@
max_order = 0;
size = 0;

- for (ln=bus->devices.next; ln != &bus->devices; ln=ln->next) {
- struct pci_dev *dev = pci_dev_b(ln);
+ list_for_each_entry(dev, &bus->devices, bus_list) {
int i;

for (i = 0; i < PCI_NUM_RESOURCES; i++) {
@@ -322,11 +319,12 @@
void __devinit
pci_bus_size_bridges(struct pci_bus *bus)
{
- struct list_head *ln;
+ struct pci_bus *b;
unsigned long mask, type;

- for (ln=bus->children.next; ln != &bus->children; ln=ln->next)
- pci_bus_size_bridges(pci_bus_b(ln));
+ list_for_each_entry(b, &bus->children, node) {
+ pci_bus_size_bridges(b);
+ }

/* The root bus? */
if (!bus->self)
@@ -350,20 +348,16 @@
void __devinit
pci_bus_assign_resources(struct pci_bus *bus)
{
- struct list_head *ln;
+ struct pci_bus *b;
int found_vga = pbus_assign_resources_sorted(bus);

if (found_vga) {
- struct pci_bus *b;
-
/* Propagate presence of the VGA to upstream bridges */
for (b = bus; b->parent; b = b->parent) {
b->resource[0]->flags |= IORESOURCE_BUS_HAS_VGA;
}
}
- for (ln=bus->children.next; ln != &bus->children; ln=ln->next) {
- struct pci_bus *b = pci_bus_b(ln);
-
+ list_for_each_entry(b, &bus->children, node) {
pci_bus_assign_resources(b);
pci_setup_bridge(b);
}
-
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