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PCI: Remove pci_bus_b() and use list_for_each_entry() directly

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Replace list_for_each() with list_for_each_entry(), which means we no
longer need pci_bus_b() and can remove it.

Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Yijing Wang 2014-02-13 21:14:03 +08:00 • committed by Bjorn Helgaas
commit 94e6a9b930
3 changed files with 8 additions and 9 deletions
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6
drivers/pci/pci.c
View file

@ -108,12 +108,12 @@ static bool pcie_ari_disabled;
*/
unsigned char pci_bus_max_busnr(struct pci_bus* bus)
{
struct list_head *tmp;
struct pci_bus *tmp;
unsigned char max, n;
max = bus->busn_res.end;
list_for_each(tmp, &bus->children) {
n = pci_bus_max_busnr(pci_bus_b(tmp));
list_for_each_entry(tmp, &bus->children, node) {
n = pci_bus_max_busnr(tmp);
if(n > max)
max = n;
}

10
drivers/pci/search.c
View file

@ -54,14 +54,14 @@ pci_find_upstream_pcie_bridge(struct pci_dev *pdev)
static struct pci_bus *pci_do_find_bus(struct pci_bus *bus, unsigned char busnr)
{
struct pci_bus* child;
struct list_head *tmp;
struct pci_bus *child;
struct pci_bus *tmp;
if(bus->number == busnr)
return bus;
list_for_each(tmp, &bus->children) {
child = pci_do_find_bus(pci_bus_b(tmp), busnr);
list_for_each_entry(tmp, &bus->children, node) {
child = pci_do_find_bus(tmp, busnr);
if(child)
return child;
}
@ -111,7 +111,7 @@ pci_find_next_bus(const struct pci_bus *from)
down_read(&pci_bus_sem);
n = from ? from->node.next : pci_root_buses.next;
if (n != &pci_root_buses)
b = pci_bus_b(n);
b = list_entry(n, struct pci_bus, node);
up_read(&pci_bus_sem);
return b;
}

1
include/linux/pci.h
View file

@ -461,7 +461,6 @@ struct pci_bus {
unsigned int is_added:1;
};
#define pci_bus_b(n) list_entry(n, struct pci_bus, node)
#define to_pci_bus(n) container_of(n, struct pci_bus, dev)
/*