[PATCH v10 18/22] ACPI: platform_profile: Check all profile handler to calculate next

Mario Limonciello
2024-12-06T03:26:27Z

As multiple platform profile handlers might not all support the same
profile, cycling to the next profile could have a different result
depending on what handler are registered.

Check what is active and supported by all handlers to decide what
to do.

Reviewed-by: Armin Wolf <W_Armin@gmx.de>
Tested-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
drivers/acpi/platform_profile.c | 30 +++++++++++++++++++++---------
1 file changed, 21 insertions(+), 9 deletions(-)

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index 95aff045a1eb3..a1fdc56537baf 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -418,25 +418,37 @@ EXPORT_SYMBOL_GPL(platform_profile_notify);

int platform_profile_cycle(void)
{
- enum platform_profile_option profile;
- enum platform_profile_option next;
+ enum platform_profile_option next = PLATFORM_PROFILE_LAST;
+ enum platform_profile_option profile = PLATFORM_PROFILE_LAST;
+ unsigned long choices[BITS_TO_LONGS(PLATFORM_PROFILE_LAST)];
int err;

+ set_bit(PLATFORM_PROFILE_LAST, choices);
scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) {
- if (!cur_profile)
- return -ENODEV;
+ err = class_for_each_device(&platform_profile_class, NULL,
+ &profile, _aggregate_profiles);
+ if (err)
+ return err;

- err = cur_profile->profile_get(cur_profile, &profile);
+ if (profile == PLATFORM_PROFILE_CUSTOM ||
+ profile == PLATFORM_PROFILE_LAST)
+ return -EINVAL;
+
+ err = class_for_each_device(&platform_profile_class, NULL,
+ choices, _aggregate_choices);
if (err)
return err;

- next = find_next_bit_wrap(cur_profile->choices, PLATFORM_PROFILE_LAST,
+ /* never iterate into a custom if all drivers supported it */
+ clear_bit(PLATFORM_PROFILE_CUSTOM, choices);
+
+ next = find_next_bit_wrap(choices,
+ PLATFORM_PROFILE_LAST,
profile + 1);

- if (WARN_ON(next == PLATFORM_PROFILE_LAST))
- return -EINVAL;
+ err = class_for_each_device(&platform_profile_class, NULL, &next,
+ _store_and_notify);

- err = cur_profile->profile_set(cur_profile, next);
if (err)
return err;
}
--
2.43.0