diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2013-01-21 13:20:50 -0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-01-25 14:53:48 -0700 |
| commit | d59f53bc9bd80ee62072dea590fc623c67cb84a8 (patch) | |
| tree | a3a0cc477ebee058882365048690fba057dea014 /drivers/pci/hotplug | |
| parent | 121b090e7d4063b65f40c267ef0fb34fb278dfdf (diff) | |
| download | linux-d59f53bc9bd80ee62072dea590fc623c67cb84a8.tar.gz | |
PCI: acpiphp: Keep driver loaded even if no slots found
Could have root bus hot-added later and there may be slots that need acpiphp. The result returned by acpiphp_get_num_slots() is meaningless, because the bridge the slots are under may be added after this function has been called, so drop acpiphp_get_num_slots() and the code using it. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/pci/hotplug')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp.h | 1 | ||||
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_core.c | 23 | ||||
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 22 |
3 files changed, 2 insertions, 44 deletions
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h index a1afb5b39ad4..b3ead7ad7b31 100644 --- a/drivers/pci/hotplug/acpiphp.h +++ b/drivers/pci/hotplug/acpiphp.h @@ -193,7 +193,6 @@ extern void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot); /* acpiphp_glue.c */ extern int acpiphp_glue_init (void); extern void acpiphp_glue_exit (void); -extern int acpiphp_get_num_slots (void); typedef int (*acpiphp_callback)(struct acpiphp_slot *slot, void *data); extern int acpiphp_enable_slot (struct acpiphp_slot *slot); diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c index 96316b74969f..c2fd3095701f 100644 --- a/drivers/pci/hotplug/acpiphp_core.c +++ b/drivers/pci/hotplug/acpiphp_core.c @@ -50,7 +50,6 @@ bool acpiphp_debug; /* local variables */ -static int num_slots; static struct acpiphp_attention_info *attention_info; #define DRIVER_VERSION "0.5" @@ -272,25 +271,6 @@ static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value) return 0; } -static int __init init_acpi(void) -{ - int retval; - - /* initialize internal data structure etc. */ - retval = acpiphp_glue_init(); - - /* read initial number of slots */ - if (!retval) { - num_slots = acpiphp_get_num_slots(); - if (num_slots == 0) { - acpiphp_glue_exit(); - retval = -ENODEV; - } - } - - return retval; -} - /** * release_slot - free up the memory used by a slot * @hotplug_slot: slot to free @@ -379,7 +359,8 @@ static int __init acpiphp_init(void) return 0; /* read all the ACPI info from the system */ - return init_acpi(); + /* initialize internal data structure etc. */ + return acpiphp_glue_init(); } diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index c4a6301009f2..bd784ff4a244 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -1416,28 +1416,6 @@ void acpiphp_glue_exit(void) acpi_pci_unregister_driver(&acpi_pci_hp_driver); } - -/** - * acpiphp_get_num_slots - count number of slots in a system - */ -int __init acpiphp_get_num_slots(void) -{ - struct acpiphp_bridge *bridge; - int num_slots = 0; - - list_for_each_entry(bridge, &bridge_list, list) { - dbg("Bus %04x:%02x has %d slot%s\n", - pci_domain_nr(bridge->pci_bus), - bridge->pci_bus->number, bridge->nr_slots, - bridge->nr_slots == 1 ? "" : "s"); - num_slots += bridge->nr_slots; - } - - dbg("Total %d slots\n", num_slots); - return num_slots; -} - - /** * acpiphp_enable_slot - power on slot * @slot: ACPI PHP slot |