Am 18.11.24 um 20:53 schrieb Armin Wolf:
Am 09.11.24 um 05:41 schrieb Mario Limonciello:
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@xxxxxx>
Tested-by: Mark Pearson <mpearson-lenovo@xxxxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
v6:
* Handle cases of inconsistent profiles or all profile handlers
supporting custom.
v5:
* Adjust mutex use
---
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 2676f4a13689e..c574483be4fd1 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -423,28 +423,40 @@ 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;
if (!class_is_registered(&platform_profile_class))
return -ENODEV;
+ 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_class_profile);
I just noticed that the class device is not notified here. Please use _store_and_notify() insted of _store_class_profile()
here.
Thanks,
Armin Wolf
- err = cur_profile->profile_set(cur_profile, next);
if (err)
return err;
}
