| Message ID | 20240418135412.14730-8-Jonathan.Cameron@huawei.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | ACPI/arm64: add support for virtual cpu hotplug | expand |
On Thu, Apr 18, 2024 at 3:57 PM Jonathan Cameron <Jonathan.Cameron@huawei.com> wrote: > > Precursor patch adds the ability to pass a uintptr_t of flags into > acpi_scan_check_and detach() so that additional flags can be > added to indicate whether to defer portions of the eject flow. > The new flag follows in the next patch. > > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> I have no specific heartburn related to this, so Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > --- > v7: No change > v6: Based on internal feedback switch to less invasive change > to using flags rather than a struct. > --- > drivers/acpi/scan.c | 17 ++++++++++++----- > 1 file changed, 12 insertions(+), 5 deletions(-) > > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index d1464324de95..1ec9677e6c2d 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -244,13 +244,16 @@ static int acpi_scan_try_to_offline(struct acpi_device *device) > return 0; > } > > -static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check) > +#define ACPI_SCAN_CHECK_FLAG_STATUS BIT(0) > + > +static int acpi_scan_check_and_detach(struct acpi_device *adev, void *p) > { > struct acpi_scan_handler *handler = adev->handler; > + uintptr_t flags = (uintptr_t)p; > > - acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, check); > + acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, p); > > - if (check) { > + if (flags & ACPI_SCAN_CHECK_FLAG_STATUS) { > acpi_bus_get_status(adev); > /* > * Skip devices that are still there and take the enabled > @@ -288,7 +291,9 @@ static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check) > > static void acpi_scan_check_subtree(struct acpi_device *adev) > { > - acpi_scan_check_and_detach(adev, (void *)true); > + uintptr_t flags = ACPI_SCAN_CHECK_FLAG_STATUS; > + > + acpi_scan_check_and_detach(adev, (void *)flags); > } > > static int acpi_scan_hot_remove(struct acpi_device *device) > @@ -2601,7 +2606,9 @@ EXPORT_SYMBOL(acpi_bus_scan); > */ > void acpi_bus_trim(struct acpi_device *adev) > { > - acpi_scan_check_and_detach(adev, NULL); > + uintptr_t flags = 0; > + > + acpi_scan_check_and_detach(adev, (void *)flags); > } > EXPORT_SYMBOL_GPL(acpi_bus_trim); > > --
On 2024/4/18 21:54, Jonathan Cameron wrote: > Precursor patch adds the ability to pass a uintptr_t of flags into > acpi_scan_check_and detach() so that additional flags can be > added to indicate whether to defer portions of the eject flow. > The new flag follows in the next patch. > > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > > --- > v7: No change > v6: Based on internal feedback switch to less invasive change > to using flags rather than a struct. > --- > drivers/acpi/scan.c | 17 ++++++++++++----- > 1 file changed, 12 insertions(+), 5 deletions(-) > > diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c > index d1464324de95..1ec9677e6c2d 100644 > --- a/drivers/acpi/scan.c > +++ b/drivers/acpi/scan.c > @@ -244,13 +244,16 @@ static int acpi_scan_try_to_offline(struct acpi_device *device) > return 0; > } > > -static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check) > +#define ACPI_SCAN_CHECK_FLAG_STATUS BIT(0) > + > +static int acpi_scan_check_and_detach(struct acpi_device *adev, void *p) > { > struct acpi_scan_handler *handler = adev->handler; > + uintptr_t flags = (uintptr_t)p; > > - acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, check); > + acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, p); > > - if (check) { > + if (flags & ACPI_SCAN_CHECK_FLAG_STATUS) { > acpi_bus_get_status(adev); > /* > * Skip devices that are still there and take the enabled > @@ -288,7 +291,9 @@ static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check) > > static void acpi_scan_check_subtree(struct acpi_device *adev) > { > - acpi_scan_check_and_detach(adev, (void *)true); > + uintptr_t flags = ACPI_SCAN_CHECK_FLAG_STATUS; > + > + acpi_scan_check_and_detach(adev, (void *)flags); > } > > static int acpi_scan_hot_remove(struct acpi_device *device) > @@ -2601,7 +2606,9 @@ EXPORT_SYMBOL(acpi_bus_scan); > */ > void acpi_bus_trim(struct acpi_device *adev) > { > - acpi_scan_check_and_detach(adev, NULL); > + uintptr_t flags = 0; > + > + acpi_scan_check_and_detach(adev, (void *)flags); > } > EXPORT_SYMBOL_GPL(acpi_bus_trim); Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
On 4/18/24 23:54, Jonathan Cameron wrote: > Precursor patch adds the ability to pass a uintptr_t of flags into > acpi_scan_check_and detach() so that additional flags can be > added to indicate whether to defer portions of the eject flow. > The new flag follows in the next patch. > > Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> > > --- > v7: No change > v6: Based on internal feedback switch to less invasive change > to using flags rather than a struct. > --- > drivers/acpi/scan.c | 17 ++++++++++++----- > 1 file changed, 12 insertions(+), 5 deletions(-) > Reviewed-by: Gavin Shan <gshan@redhat.com>
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index d1464324de95..1ec9677e6c2d 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -244,13 +244,16 @@ static int acpi_scan_try_to_offline(struct acpi_device *device) return 0; } -static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check) +#define ACPI_SCAN_CHECK_FLAG_STATUS BIT(0) + +static int acpi_scan_check_and_detach(struct acpi_device *adev, void *p) { struct acpi_scan_handler *handler = adev->handler; + uintptr_t flags = (uintptr_t)p; - acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, check); + acpi_dev_for_each_child_reverse(adev, acpi_scan_check_and_detach, p); - if (check) { + if (flags & ACPI_SCAN_CHECK_FLAG_STATUS) { acpi_bus_get_status(adev); /* * Skip devices that are still there and take the enabled @@ -288,7 +291,9 @@ static int acpi_scan_check_and_detach(struct acpi_device *adev, void *check) static void acpi_scan_check_subtree(struct acpi_device *adev) { - acpi_scan_check_and_detach(adev, (void *)true); + uintptr_t flags = ACPI_SCAN_CHECK_FLAG_STATUS; + + acpi_scan_check_and_detach(adev, (void *)flags); } static int acpi_scan_hot_remove(struct acpi_device *device) @@ -2601,7 +2606,9 @@ EXPORT_SYMBOL(acpi_bus_scan); */ void acpi_bus_trim(struct acpi_device *adev) { - acpi_scan_check_and_detach(adev, NULL); + uintptr_t flags = 0; + + acpi_scan_check_and_detach(adev, (void *)flags); } EXPORT_SYMBOL_GPL(acpi_bus_trim);
Precursor patch adds the ability to pass a uintptr_t of flags into acpi_scan_check_and detach() so that additional flags can be added to indicate whether to defer portions of the eject flow. The new flag follows in the next patch. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> --- v7: No change v6: Based on internal feedback switch to less invasive change to using flags rather than a struct. --- drivers/acpi/scan.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-)