| Message ID | 20230913163823.7880-20-james.morse@arm.com (mailing list archive) |
|---|---|
| State | RFC, archived |
| Headers | show |
| Series | ACPI/arm64: add support for virtual cpuhotplug | expand |
On Wed, 13 Sep 2023 16:38:07 +0000 James Morse <james.morse@arm.com> wrote: > A subsequent patch will change acpi_scan_hot_remove() to call > acpi_bus_trim_one() instead of acpi_bus_trim(), meaning it can no longer > rely on the prototype in the header file. > > Move these functions further up the file. > No change in behaviour. > > Signed-off-by: James Morse <james.morse@arm.com> FWIW Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > --- > drivers/acpi/scan.c | 76 ++++++++++++++++++++++----------------------- > 1 file changed, 38 insertions(+), 38 deletions(-) > > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index f898591ce05f..a675333618ae 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -244,6 +244,44 @@ static int acpi_scan_try_to_offline(struct acpi_device *device) > return 0; > } > > +static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used) > +{ > + struct acpi_scan_handler *handler = adev->handler; > + > + acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL); > + > + adev->flags.match_driver = false; > + if (handler) { > + if (handler->detach) > + handler->detach(adev); > + > + adev->handler = NULL; > + } else { > + device_release_driver(&adev->dev); > + } > + /* > + * Most likely, the device is going away, so put it into D3cold before > + * that. > + */ > + acpi_device_set_power(adev, ACPI_STATE_D3_COLD); > + adev->flags.initialized = false; > + acpi_device_clear_enumerated(adev); > + > + return 0; > +} > + > +/** > + * acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects. > + * @adev: Root of the ACPI namespace scope to walk. > + * > + * Must be called under acpi_scan_lock. > + */ > +void acpi_bus_trim(struct acpi_device *adev) > +{ > + acpi_bus_trim_one(adev, NULL); > +} > +EXPORT_SYMBOL_GPL(acpi_bus_trim); > + > static int acpi_scan_hot_remove(struct acpi_device *device) > { > acpi_handle handle = device->handle; > @@ -2506,44 +2544,6 @@ int acpi_bus_scan(acpi_handle handle) > } > EXPORT_SYMBOL(acpi_bus_scan); > > -static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used) > -{ > - struct acpi_scan_handler *handler = adev->handler; > - > - acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL); > - > - adev->flags.match_driver = false; > - if (handler) { > - if (handler->detach) > - handler->detach(adev); > - > - adev->handler = NULL; > - } else { > - device_release_driver(&adev->dev); > - } > - /* > - * Most likely, the device is going away, so put it into D3cold before > - * that. > - */ > - acpi_device_set_power(adev, ACPI_STATE_D3_COLD); > - adev->flags.initialized = false; > - acpi_device_clear_enumerated(adev); > - > - return 0; > -} > - > -/** > - * acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects. > - * @adev: Root of the ACPI namespace scope to walk. > - * > - * Must be called under acpi_scan_lock. > - */ > -void acpi_bus_trim(struct acpi_device *adev) > -{ > - acpi_bus_trim_one(adev, NULL); > -} > -EXPORT_SYMBOL_GPL(acpi_bus_trim); > - > int acpi_bus_register_early_device(int type) > { > struct acpi_device *device = NULL;
On 9/14/23 02:38, James Morse wrote: > A subsequent patch will change acpi_scan_hot_remove() to call > acpi_bus_trim_one() instead of acpi_bus_trim(), meaning it can no longer > rely on the prototype in the header file. > > Move these functions further up the file. > No change in behaviour. > > Signed-off-by: James Morse <james.morse@arm.com> > --- > drivers/acpi/scan.c | 76 ++++++++++++++++++++++----------------------- > 1 file changed, 38 insertions(+), 38 deletions(-) > Reviewed-by: Gavin Shan <gshan@redhat.com> > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index f898591ce05f..a675333618ae 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -244,6 +244,44 @@ static int acpi_scan_try_to_offline(struct acpi_device *device) > return 0; > } > > +static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used) > +{ > + struct acpi_scan_handler *handler = adev->handler; > + > + acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL); > + > + adev->flags.match_driver = false; > + if (handler) { > + if (handler->detach) > + handler->detach(adev); > + > + adev->handler = NULL; > + } else { > + device_release_driver(&adev->dev); > + } > + /* > + * Most likely, the device is going away, so put it into D3cold before > + * that. > + */ > + acpi_device_set_power(adev, ACPI_STATE_D3_COLD); > + adev->flags.initialized = false; > + acpi_device_clear_enumerated(adev); > + > + return 0; > +} > + > +/** > + * acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects. > + * @adev: Root of the ACPI namespace scope to walk. > + * > + * Must be called under acpi_scan_lock. > + */ > +void acpi_bus_trim(struct acpi_device *adev) > +{ > + acpi_bus_trim_one(adev, NULL); > +} > +EXPORT_SYMBOL_GPL(acpi_bus_trim); > + > static int acpi_scan_hot_remove(struct acpi_device *device) > { > acpi_handle handle = device->handle; > @@ -2506,44 +2544,6 @@ int acpi_bus_scan(acpi_handle handle) > } > EXPORT_SYMBOL(acpi_bus_scan); > > -static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used) > -{ > - struct acpi_scan_handler *handler = adev->handler; > - > - acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL); > - > - adev->flags.match_driver = false; > - if (handler) { > - if (handler->detach) > - handler->detach(adev); > - > - adev->handler = NULL; > - } else { > - device_release_driver(&adev->dev); > - } > - /* > - * Most likely, the device is going away, so put it into D3cold before > - * that. > - */ > - acpi_device_set_power(adev, ACPI_STATE_D3_COLD); > - adev->flags.initialized = false; > - acpi_device_clear_enumerated(adev); > - > - return 0; > -} > - > -/** > - * acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects. > - * @adev: Root of the ACPI namespace scope to walk. > - * > - * Must be called under acpi_scan_lock. > - */ > -void acpi_bus_trim(struct acpi_device *adev) > -{ > - acpi_bus_trim_one(adev, NULL); > -} > -EXPORT_SYMBOL_GPL(acpi_bus_trim); > - > int acpi_bus_register_early_device(int type) > { > struct acpi_device *device = NULL; Thanks, Gavin
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index f898591ce05f..a675333618ae 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -244,6 +244,44 @@ static int acpi_scan_try_to_offline(struct acpi_device *device) return 0; } +static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used) +{ + struct acpi_scan_handler *handler = adev->handler; + + acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL); + + adev->flags.match_driver = false; + if (handler) { + if (handler->detach) + handler->detach(adev); + + adev->handler = NULL; + } else { + device_release_driver(&adev->dev); + } + /* + * Most likely, the device is going away, so put it into D3cold before + * that. + */ + acpi_device_set_power(adev, ACPI_STATE_D3_COLD); + adev->flags.initialized = false; + acpi_device_clear_enumerated(adev); + + return 0; +} + +/** + * acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects. + * @adev: Root of the ACPI namespace scope to walk. + * + * Must be called under acpi_scan_lock. + */ +void acpi_bus_trim(struct acpi_device *adev) +{ + acpi_bus_trim_one(adev, NULL); +} +EXPORT_SYMBOL_GPL(acpi_bus_trim); + static int acpi_scan_hot_remove(struct acpi_device *device) { acpi_handle handle = device->handle; @@ -2506,44 +2544,6 @@ int acpi_bus_scan(acpi_handle handle) } EXPORT_SYMBOL(acpi_bus_scan); -static int acpi_bus_trim_one(struct acpi_device *adev, void *not_used) -{ - struct acpi_scan_handler *handler = adev->handler; - - acpi_dev_for_each_child_reverse(adev, acpi_bus_trim_one, NULL); - - adev->flags.match_driver = false; - if (handler) { - if (handler->detach) - handler->detach(adev); - - adev->handler = NULL; - } else { - device_release_driver(&adev->dev); - } - /* - * Most likely, the device is going away, so put it into D3cold before - * that. - */ - acpi_device_set_power(adev, ACPI_STATE_D3_COLD); - adev->flags.initialized = false; - acpi_device_clear_enumerated(adev); - - return 0; -} - -/** - * acpi_bus_trim - Detach scan handlers and drivers from ACPI device objects. - * @adev: Root of the ACPI namespace scope to walk. - * - * Must be called under acpi_scan_lock. - */ -void acpi_bus_trim(struct acpi_device *adev) -{ - acpi_bus_trim_one(adev, NULL); -} -EXPORT_SYMBOL_GPL(acpi_bus_trim); - int acpi_bus_register_early_device(int type) { struct acpi_device *device = NULL;
A subsequent patch will change acpi_scan_hot_remove() to call acpi_bus_trim_one() instead of acpi_bus_trim(), meaning it can no longer rely on the prototype in the header file. Move these functions further up the file. No change in behaviour. Signed-off-by: James Morse <james.morse@arm.com> --- drivers/acpi/scan.c | 76 ++++++++++++++++++++++----------------------- 1 file changed, 38 insertions(+), 38 deletions(-)