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path: root/drivers/pci/pci.c
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-rw-r--r--drivers/pci/pci.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index c8b4dbdd1bdd..f18ea90cf91a 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -81,6 +81,9 @@ unsigned long pci_cardbus_mem_size = DEFAULT_CARDBUS_MEM_SIZE;
unsigned long pci_hotplug_io_size = DEFAULT_HOTPLUG_IO_SIZE;
unsigned long pci_hotplug_mem_size = DEFAULT_HOTPLUG_MEM_SIZE;
+#define DEFAULT_HOTPLUG_BUS_SIZE 1
+unsigned long pci_hotplug_bus_size = DEFAULT_HOTPLUG_BUS_SIZE;
+
enum pcie_bus_config_types pcie_bus_config = PCIE_BUS_DEFAULT;
/*
@@ -5021,6 +5024,11 @@ static int __init pci_setup(char *str)
pci_hotplug_io_size = memparse(str + 9, &str);
} else if (!strncmp(str, "hpmemsize=", 10)) {
pci_hotplug_mem_size = memparse(str + 10, &str);
+ } else if (!strncmp(str, "hpbussize=", 10)) {
+ pci_hotplug_bus_size =
+ simple_strtoul(str + 10, &str, 0);
+ if (pci_hotplug_bus_size > 0xff)
+ pci_hotplug_bus_size = DEFAULT_HOTPLUG_BUS_SIZE;
} else if (!strncmp(str, "pcie_bus_tune_off", 17)) {
pcie_bus_config = PCIE_BUS_TUNE_OFF;
} else if (!strncmp(str, "pcie_bus_safe", 13)) {