[PATCH 7.3.y] thermal: intel: int340x: Evaluate _TMP exclusively

[Sasha Levin <sashal@kernel.org>]

From: Ali Ahmet Memiş <aliamemis@disroot.org>

[ Upstream commit c4aae727beb23a736c15b8d53e219da29d791065 ]

On ThinkPad P1 Gen2 and P53, INT3403 _TMP switches the EC page selector
without taking the mutex the battery methods use, so it must not run
interleaved with them.

Evaluate _TMP with acpi_evaluate_integer_exclusive(), also where int3403
and processor_thermal probe for it.

Fixes: d33e89d12295 ("thermal: core: Suspend thermal zones later and resume them earlier")
Reported-by: Charis Stratakis <c.stratakis@proton.me>
Closes: https://lore.kernel.org/all/37N_jFulf7n-Z55NfKfE71C_wVPxYvZ0xD_iRUg2fXu7TypDiF5PStQ6siSfVBih6fThg5WoPes8U5ZQpfVm_teMFcUGXFxz2DdMbfSWuws=@proton.me/
Cc: All applicable <stable@vger.kernel.org> # 80892972ff23 ACPI: utils: Add exclusive AML evaluation helpers
Signed-off-by: Ali Ahmet Memiş <aliamemis@disroot.org>
Reviewed-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Reviewed-by: Rong Zhang <i@rong.moe>
Link: https://patch.msgid.link/20261018122220.678822-4-aliamemis@disroot.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
Depends on <20261111164858.3300811-1-sashal@kernel.org>

 drivers/thermal/intel/int340x_thermal/int3403_thermal.c     | 3 +--
 .../thermal/intel/int340x_thermal/int340x_thermal_zone.c    | 6 +++++-
 .../intel/int340x_thermal/processor_thermal_device.c        | 2 +-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/thermal/intel/int340x_thermal/int3403_thermal.c b/drivers/thermal/intel/int340x_thermal/int3403_thermal.c
index 264c9bc8e6454..2262de1e14d95 100644
--- a/drivers/thermal/intel/int340x_thermal/int3403_thermal.c
+++ b/drivers/thermal/intel/int340x_thermal/int3403_thermal.c
@@ -217,8 +217,7 @@ static int int3403_add(struct platform_device *pdev)
 	}
 
 
-	status = acpi_evaluate_integer(priv->adev->handle, "_TMP",
-				       NULL, &tmp);
+	status = acpi_evaluate_integer_exclusive(priv->adev->handle, "_TMP", NULL, &tmp);
 	if (ACPI_FAILURE(status)) {
 		status = acpi_evaluate_integer(priv->adev->handle, "PTYP",
 				       NULL, &priv->type);
diff --git a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
index 965700ee69626..9451fea1f65c7 100644
--- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
+++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
@@ -18,7 +18,11 @@ static int int340x_thermal_get_zone_temp(struct thermal_zone_device *zone,
 	unsigned long long tmp;
 	acpi_status status;
 
-	status = acpi_evaluate_integer(d->adev->handle, "_TMP", NULL, &tmp);
+	/*
+	 * On some ThinkPads _TMP switches the EC page selector without
+	 * taking the mutex the battery methods use.
+	 */
+	status = acpi_evaluate_integer_exclusive(d->adev->handle, "_TMP", NULL, &tmp);
 	if (ACPI_FAILURE(status))
 		return -EIO;
 
diff --git a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
index b0284c2e2e74d..9bdb65f54b6ae 100644
--- a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
+++ b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
@@ -287,7 +287,7 @@ int proc_thermal_add(struct device *dev, struct proc_thermal_device *proc_priv)
 	if (ret)
 		return ret;
 
-	status = acpi_evaluate_integer(adev->handle, "_TMP", NULL, &tmp);
+	status = acpi_evaluate_integer_exclusive(adev->handle, "_TMP", NULL, &tmp);
 	if (ACPI_FAILURE(status)) {
 		/* there is no _TMP method, add local method */
 		if (intel_tcc_get_tjmax(-1) > 0)
-- 
2.53.0