From dd2151be28b9ed734fc5738ac675ed7e234847e3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 4 Feb 2014 00:44:02 +0100 Subject: [PATCH] ACPI / hotplug / PCI: Rework the handling of eject requests To avoid the need to install a hotplug notify handler for each ACPI namespace node representing a device and having a matching scan handler, move the check whether or not the ejection of the given device is enabled through its scan handler from acpi_hotplug_notify_cb() to acpi_generic_hotplug_event(). Also, move the execution of ACPI_OST_SC_EJECT_IN_PROGRESS _OST to acpi_generic_hotplug_event(), because in acpi_hotplug_notify_cb() or in acpi_eject_store() we really don't know whether or not the eject is going to be in progress (for example, acpi_hotplug_execute() may still fail without queuing up the work item). Signed-off-by: Rafael J. Wysocki Tested-by: Mika Westerberg --- drivers/acpi/scan.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 984eaff235df..a3f5d6eabe46 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -459,6 +459,12 @@ static int acpi_generic_hotplug_event(struct acpi_device *adev, u32 type) return acpi_scan_device_check(adev); case ACPI_NOTIFY_EJECT_REQUEST: case ACPI_OST_EC_OSPM_EJECT: + if (adev->handler && !adev->handler->hotplug.enabled) { + dev_info(&adev->dev, "Eject disabled\n"); + return -EPERM; + } + acpi_evaluate_hotplug_ost(adev->handle, ACPI_NOTIFY_EJECT_REQUEST, + ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); return acpi_scan_hot_remove(adev); } return -EINVAL; @@ -483,6 +489,10 @@ static void acpi_device_hotplug(void *data, u32 src) if (adev->flags.hotplug_notify) { error = acpi_generic_hotplug_event(adev, src); + if (error == -EPERM) { + ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; + goto err_out; + } } else { int (*event)(struct acpi_device *, u32); @@ -512,7 +522,6 @@ static void acpi_device_hotplug(void *data, u32 src) static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) { - struct acpi_scan_handler *handler = data; u32 ost_code = ACPI_OST_SC_SUCCESS; struct acpi_device *adev; acpi_status status; @@ -528,13 +537,6 @@ static void acpi_hotplug_notify_cb(acpi_handle handle, u32 type, void *data) case ACPI_NOTIFY_EJECT_REQUEST: acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n"); - if (handler && !handler->hotplug.enabled) { - acpi_handle_err(handle, "Eject disabled\n"); - ost_code = ACPI_OST_SC_EJECT_NOT_SUPPORTED; - goto out; - } - acpi_evaluate_hotplug_ost(handle, ACPI_NOTIFY_EJECT_REQUEST, - ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); break; case ACPI_NOTIFY_DEVICE_WAKE: @@ -632,8 +634,6 @@ acpi_eject_store(struct device *d, struct device_attribute *attr, if (ACPI_FAILURE(status) || !acpi_device->flags.ejectable) return -ENODEV; - acpi_evaluate_hotplug_ost(acpi_device->handle, ACPI_OST_EC_OSPM_EJECT, - ACPI_OST_SC_EJECT_IN_PROGRESS, NULL); get_device(&acpi_device->dev); status = acpi_hotplug_execute(acpi_device_hotplug, acpi_device, ACPI_OST_EC_OSPM_EJECT);