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authorBjorn Helgaas <bjorn.helgaas@hp.com>2009-06-18 14:47:02 -0600
committerLen Brown <len.brown@intel.com>2009-06-20 00:01:53 -0400
commitc1aec8341627dad5d63cc24aa6746dc077f5b706 (patch)
treef408c024c60a7d108e99f12a761b420a2bcc0c34 /drivers/acpi/pci_root.c
parentcaf420c68afe01acd7c458ce40b85b3db5330ff5 (diff)
downloadblackbird-op-linux-c1aec8341627dad5d63cc24aa6746dc077f5b706.tar.gz
blackbird-op-linux-c1aec8341627dad5d63cc24aa6746dc077f5b706.zip
ACPI: pci_root: simplify list traversals
Using list_for_each_entry() makes traversing the root list easier. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Reviewed-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/pci_root.c')
-rw-r--r--drivers/acpi/pci_root.c23
1 files changed, 9 insertions, 14 deletions
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 7984e00540fa..4fb747205418 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -82,7 +82,7 @@ static DEFINE_MUTEX(osc_lock);
int acpi_pci_register_driver(struct acpi_pci_driver *driver)
{
int n = 0;
- struct list_head *entry;
+ struct acpi_pci_root *root;
struct acpi_pci_driver **pptr = &sub_driver;
while (*pptr)
@@ -92,9 +92,7 @@ int acpi_pci_register_driver(struct acpi_pci_driver *driver)
if (!driver->add)
return 0;
- list_for_each(entry, &acpi_pci_roots) {
- struct acpi_pci_root *root;
- root = list_entry(entry, struct acpi_pci_root, node);
+ list_for_each_entry(root, &acpi_pci_roots, node) {
driver->add(root->device->handle);
n++;
}
@@ -106,7 +104,7 @@ EXPORT_SYMBOL(acpi_pci_register_driver);
void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
{
- struct list_head *entry;
+ struct acpi_pci_root *root;
struct acpi_pci_driver **pptr = &sub_driver;
while (*pptr) {
@@ -120,23 +118,19 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
if (!driver->remove)
return;
- list_for_each(entry, &acpi_pci_roots) {
- struct acpi_pci_root *root;
- root = list_entry(entry, struct acpi_pci_root, node);
+ list_for_each_entry(root, &acpi_pci_roots, node)
driver->remove(root->device->handle);
- }
}
EXPORT_SYMBOL(acpi_pci_unregister_driver);
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int seg, unsigned int bus)
{
- struct acpi_pci_root *tmp;
+ struct acpi_pci_root *root;
- list_for_each_entry(tmp, &acpi_pci_roots, node) {
- if ((tmp->id.segment == (u16) seg) && (tmp->id.bus == (u16) bus))
- return tmp->device->handle;
- }
+ list_for_each_entry(root, &acpi_pci_roots, node)
+ if ((root->id.segment == (u16) seg) && (root->id.bus == (u16) bus))
+ return root->device->handle;
return NULL;
}
@@ -301,6 +295,7 @@ static acpi_status acpi_pci_osc_support(struct acpi_pci_root *root, u32 flags)
static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
{
struct acpi_pci_root *root;
+
list_for_each_entry(root, &acpi_pci_roots, node) {
if (root->device->handle == handle)
return root;
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