diff options
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/pci/mmconfig.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/arch/x86_64/pci/mmconfig.c b/arch/x86_64/pci/mmconfig.c index 50512a8fc9e..918fc5b95a0 100644 --- a/arch/x86_64/pci/mmconfig.c +++ b/arch/x86_64/pci/mmconfig.c @@ -13,10 +13,6 @@ #include "pci.h" -/* Verify the first 16 busses. We assume that systems with more busses - get MCFG right. */ -#define PCI_MMCFG_MAX_CHECK_BUS 16 - /* Static virtual mapping of the MMCONFIG aperture */ struct mmcfg_virt { struct acpi_mcfg_allocation *cfg; @@ -26,17 +22,13 @@ static struct mmcfg_virt *pci_mmcfg_virt; static char __iomem *get_virt(unsigned int seg, unsigned bus) { - int cfg_num = -1; struct acpi_mcfg_allocation *cfg; + int cfg_num; - while (1) { - ++cfg_num; - if (cfg_num >= pci_mmcfg_config_num) - break; + for (cfg_num = 0; cfg_num < pci_mmcfg_config_num; cfg_num++) { cfg = pci_mmcfg_virt[cfg_num].cfg; - if (cfg->pci_segment != seg) - continue; - if ((cfg->start_bus_number <= bus) && + if (cfg->pci_segment == seg && + (cfg->start_bus_number <= bus) && (cfg->end_bus_number >= bus)) return pci_mmcfg_virt[cfg_num].virt; } |