diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-04 03:38:52 +0400 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-02-05 20:40:34 +0400 |
| commit | 4dc3082dc1dd1415177d71f15d4b19bebb1365c0 (patch) | |
| tree | 263be780eed03e3f933c0ec0f1ed4017f3d507fe /drivers/pci/hotplug/acpiphp_glue.c | |
| parent | 146fc68a4bdd78e49d56f1530f6b8072034cf3ef (diff) | |
| download | linux-4dc3082dc1dd1415177d71f15d4b19bebb1365c0.tar.xz | |
ACPI / hotplug / PCI: Drop acpiphp_bus_trim()
If trim_stale_devices() calls acpi_bus_trim() directly, we can
save a potentially costly acpi_bus_get_device() invocation. After
making that change acpiphp_bus_trim() would only be called from one
place, so move the code from it to that place and drop it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/pci/hotplug/acpiphp_glue.c')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 30 |
1 files changed, 11 insertions, 19 deletions
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index c97454c74c26..caeef648287a 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -489,19 +489,6 @@ static unsigned char acpiphp_max_busnr(struct pci_bus *bus) } /** - * acpiphp_bus_trim - Trim device objects in an ACPI namespace subtree. - * @handle: ACPI device object handle to start from. - */ -static void acpiphp_bus_trim(acpi_handle handle) -{ - struct acpi_device *adev = NULL; - - acpi_bus_get_device(handle, &adev); - if (adev) - acpi_bus_trim(adev); -} - -/** * acpiphp_bus_add - Scan ACPI namespace subtree. * @handle: ACPI object handle to start the scan from. */ @@ -641,8 +628,12 @@ static void disable_slot(struct acpiphp_slot *slot) if (PCI_SLOT(dev->devfn) == slot->device) pci_stop_and_remove_bus_device(dev); - list_for_each_entry(func, &slot->funcs, sibling) - acpiphp_bus_trim(func_to_handle(func)); + list_for_each_entry(func, &slot->funcs, sibling) { + struct acpi_device *adev; + + if (!acpi_bus_get_device(func_to_handle(func), &adev)) + acpi_bus_trim(adev); + } slot->flags &= (~SLOT_ENABLED); } @@ -714,11 +705,12 @@ static unsigned int get_slot_status(struct acpiphp_slot *slot) */ static void trim_stale_devices(struct pci_dev *dev) { - acpi_handle handle = ACPI_HANDLE(&dev->dev); + struct acpi_device *adev = ACPI_COMPANION(&dev->dev); struct pci_bus *bus = dev->subordinate; bool alive = false; - if (handle) { + if (adev) { + acpi_handle handle = adev->handle; acpi_status status; unsigned long long sta; @@ -734,8 +726,8 @@ static void trim_stale_devices(struct pci_dev *dev) } if (!alive) { pci_stop_and_remove_bus_device(dev); - if (handle) - acpiphp_bus_trim(handle); + if (adev) + acpi_bus_trim(adev); } else if (bus) { struct pci_dev *child, *tmp; |