diff options
| author | Jiang Liu <liuj97@gmail.com> | 2013-04-12 09:44:25 +0400 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-04-13 01:38:25 +0400 |
| commit | 6037a803b05eef9943fb64982e19964007fb7478 (patch) | |
| tree | 3e15b1dfef971b65175c665f97d3ea70507423a8 /drivers/pci/hotplug/acpiphp_core.c | |
| parent | 5c0b04e3d913c91aee6e48e567e20a3f67849618 (diff) | |
| download | linux-6037a803b05eef9943fb64982e19964007fb7478.tar.xz | |
PCI: acpiphp: Convert acpiphp to be builtin only, not modular
Convert acpiphp to be builtin only, with no module option.
Previously, when HOTPLUG_PCI_ACPI=m, users could disable acpiphp by
removing the module or preventing it from loading. That can't be done
if acpiphp is builtin statically, so this adds an "acpiphp.disable"
kernel parameter. If a user needs to use this parameter, it is a bug,
and we want to hear about it.
[bhelgaas: fold in acpiphp.disable here, remove documentation]
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/hotplug/acpiphp_core.c')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_core.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c index c2fd3095701f..81adbfa4df1b 100644 --- a/drivers/pci/hotplug/acpiphp_core.c +++ b/drivers/pci/hotplug/acpiphp_core.c @@ -48,6 +48,7 @@ #define SLOT_NAME_SIZE 21 /* {_SUN} */ bool acpiphp_debug; +bool acpiphp_disabled; /* local variables */ static struct acpiphp_attention_info *attention_info; @@ -60,7 +61,9 @@ MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); MODULE_PARM_DESC(debug, "Debugging mode enabled or not"); +MODULE_PARM_DESC(disable, "disable acpiphp driver"); module_param_named(debug, acpiphp_debug, bool, 0644); +module_param_named(disable, acpiphp_disabled, bool, 0444); /* export the attention callback registration methods */ EXPORT_SYMBOL_GPL(acpiphp_register_attention); @@ -353,9 +356,11 @@ void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *acpiphp_slot) static int __init acpiphp_init(void) { - info(DRIVER_DESC " version: " DRIVER_VERSION "\n"); + info(DRIVER_DESC " version: " DRIVER_VERSION "%s\n", + acpiphp_disabled ? ", disabled by user; please report a bug" + : ""); - if (acpi_pci_disabled) + if (acpi_pci_disabled || acpiphp_disabled) return 0; /* read all the ACPI info from the system */ @@ -364,14 +369,4 @@ static int __init acpiphp_init(void) } -static void __exit acpiphp_exit(void) -{ - if (acpi_pci_disabled) - return; - - /* deallocate internal data structures etc. */ - acpiphp_glue_exit(); -} - module_init(acpiphp_init); -module_exit(acpiphp_exit); |