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Message-ID: <5738410.DvuYhMxLoT@kreacher>
Date: Thu, 28 Sep 2023 17:45:59 +0200
From: "Rafael J. Wysocki" <rjw@...ysocki.net>
To: Linux ACPI <linux-acpi@...r.kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>,
LKML <linux-kernel@...r.kernel.org>,
Linux PM <linux-pm@...r.kernel.org>,
Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
Zhang Rui <rui.zhang@...el.com>
Subject: [PATCH v1] ACPI: thermal: Mark uninitialized active trips as invalid
From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
After removing the valid flag from struct acpi_thermal_trip, the trip
temperature value is used in validity checks, so it must be
THERMAL_TEMP_INVALID for the active trip entries in struct acpi_thermal_trips
that are not going to be used (because the corresponding objects are not
present in the ACPI tables, for example).
Accordingly, modify acpi_thermal_get_trip_points() to set the temperature
value to THERMAL_TEMP_INVALID for trip point entries skipped by it after
acpi_thermal_init_trip() has returned 'false' for an active trip.
Fixes: 058f5e407deb ("ACPI: thermal: Drop valid flag from struct acpi_thermal_trip")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
Commit 058f5e407deb mentioned above is present in the linux-next branch
of linux-pm.git and acpi_thermal_init_trip() is introduced by
https://patchwork.kernel.org/project/linux-pm/patch/1785516.VLH7GnMWUR@kreacher/
---
drivers/acpi/thermal.c | 3 +++
1 file changed, 3 insertions(+)
Index: linux-pm/drivers/acpi/thermal.c
===================================================================
--- linux-pm.orig/drivers/acpi/thermal.c
+++ linux-pm/drivers/acpi/thermal.c
@@ -480,6 +480,9 @@ static int acpi_thermal_get_trip_points(
}
+ while (++i < ACPI_THERMAL_MAX_ACTIVE)
+ tz->trips.active[i].trip.temperature = THERMAL_TEMP_INVALID;
+
return count;
}
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