PCI: replace cfg space size (256/4096) by macros.
This is a cleanup that changes all PCI configuration space size
representations to the macros (PCI_CFG_SPACE_SIZE and
PCI_CFG_SPACE_EXP_SIZE). And the macros are also moved from
drivers/pci/probe.c to drivers/pci/pci.h.
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 09dc893..553ca66 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -213,10 +213,13 @@
int pci_find_ext_capability(struct pci_dev *dev, int cap)
{
u32 header;
- int ttl = 480; /* 3840 bytes, minimum 8 bytes per capability */
- int pos = 0x100;
+ int ttl;
+ int pos = PCI_CFG_SPACE_SIZE;
- if (dev->cfg_size <= 256)
+ /* minimum 8 bytes per capability */
+ ttl = (PCI_CFG_SPACE_EXP_SIZE - PCI_CFG_SPACE_SIZE) / 8;
+
+ if (dev->cfg_size <= PCI_CFG_SPACE_SIZE)
return 0;
if (pci_read_config_dword(dev, pos, &header) != PCIBIOS_SUCCESSFUL)
@@ -234,7 +237,7 @@
return pos;
pos = PCI_EXT_CAP_NEXT(header);
- if (pos < 0x100)
+ if (pos < PCI_CFG_SPACE_SIZE)
break;
if (pci_read_config_dword(dev, pos, &header) != PCIBIOS_SUCCESSFUL)
