Messages in this thread Patch in this message |  | | From | "Rafael J. Wysocki" <> | Subject | [PATCH 2/3] ACPI / hotplug: Fix PCI host bridge hot removal | Date | Thu, 14 Nov 2013 00:16:58 +0100 |
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Since the PCI host bridge scan handler does not set hotplug.enabled, the check of it in acpi_bus_device_eject() effectively prevents the root bridge hot removal from working after commit a3b1b1ef78cd (ACPI / hotplug: Merge device hot-removal routines). However, that check is not necessary, because the other acpi_bus_device_eject() users, acpi_hotplug_notify_cb and acpi_eject_store(), do the same check by themselves before executing that function.
For this reason, remove the scan handler check from acpi_bus_device_eject() to make PCI hot bridge hot removal work again.
Fixes: a3b1b1ef78cd (ACPI / hotplug: Merge device hot-removal routines) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- drivers/acpi/scan.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-)
Index: linux-pm/drivers/acpi/scan.c =================================================================== --- linux-pm.orig/drivers/acpi/scan.c +++ linux-pm/drivers/acpi/scan.c @@ -289,24 +289,17 @@ void acpi_bus_device_eject(void *data, u { struct acpi_device *device = data; acpi_handle handle = device->handle; - struct acpi_scan_handler *handler; u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; int error; lock_device_hotplug(); mutex_lock(&acpi_scan_lock); - handler = device->handler; - if (!handler || !handler->hotplug.enabled) { - put_device(&device->dev); - goto err_support; - } - if (ost_src == ACPI_NOTIFY_EJECT_REQUEST) acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); - if (handler->hotplug.mode == AHM_CONTAINER) + if (device->handler && device->handler->hotplug.mode == AHM_CONTAINER) kobject_uevent(&device->dev.kobj, KOBJ_OFFLINE); error = acpi_scan_hot_remove(device);
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