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platform/x86: thinkpad_acpi: Only update profile if successfully converted

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[ Upstream commit 427c70dec738318b7f71e1b9d829ff0e9771d493 ]

Randomly a Lenovo Z13 will trigger a kernel warning traceback from this
condition:

```
if (WARN_ON((profile < 0) || (profile >= ARRAY_SIZE(profile_names))))
```

This happens because thinkpad-acpi always assumes that
convert_dytc_to_profile() successfully updated the profile. On the
contrary a condition can occur that when dytc_profile_refresh() is called
the profile doesn't get updated as there is a -EOPNOTSUPP branch.

Catch this situation and avoid updating the profile. Also log this into
dynamic debugging in case any other modes should be added in the future.

Fixes: c3bfcd4c6762 ("platform/x86: thinkpad_acpi: Add platform profile support")
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20240217022311.113879-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Mario Limonciello 2024-02-16 20:23:11 -06:00 committed by Greg Kroah-Hartman
parent 38c83c2488
commit 6216509a2e
1 changed files with 3 additions and 2 deletions
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5
drivers/platform/x86/thinkpad_acpi.c
View File

@ -10511,6 +10511,7 @@ static int convert_dytc_to_profile(int funcmode, int dytcmode,
return 0;
default:
/* Unknown function */
pr_debug("unknown function 0x%x\n", funcmode);
return -EOPNOTSUPP;
}
return 0;
@ -10696,8 +10697,8 @@ static void dytc_profile_refresh(void)
return;
perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF;
convert_dytc_to_profile(funcmode, perfmode, &profile);
if (profile != dytc_current_profile) {
err = convert_dytc_to_profile(funcmode, perfmode, &profile);
if (!err && profile != dytc_current_profile) {
dytc_current_profile = profile;
platform_profile_notify();
}