From: Colin Ian King <colin.i.king@gmail.com>
To: "Rafael J . Wysocki" <rafael@kernel.org>,
Zhang Rui <rui.zhang@intel.com>, Len Brown <lenb@kernel.org>,
linux-acpi@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH][next][V2] ACPI: thermal_lib: Initialize temp_decik to zero
Date: Thu, 22 Feb 2024 10:57:23 +0000 [thread overview]
Message-ID: <20240222105723.3810303-1-colin.i.king@gmail.com> (raw)
Static analysis with clang scan build is warning that uninitialized
data is being passed into various functions. Stop these warnings by
initializing temp_decik to zero.
Cleans up clang scan warnings in lines 106, 125, 146 and 164 such as:
drivers/acpi/thermal_lib.c:106:9: warning: 2nd function call argument
is an uninitialized value [core.CallAndMessage]
Kudos to Dan Carpenter for the deeper analysis of this issue.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
---
V2: just set temp_decik to 0
---
drivers/acpi/thermal_lib.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/acpi/thermal_lib.c b/drivers/acpi/thermal_lib.c
index 4e0519ca9739..6214d6ebe1fa 100644
--- a/drivers/acpi/thermal_lib.c
+++ b/drivers/acpi/thermal_lib.c
@@ -100,7 +100,7 @@ static int thermal_temp(int error, int temp_decik, int *ret_temp)
*/
int thermal_acpi_active_trip_temp(struct acpi_device *adev, int id, int *ret_temp)
{
- int temp_decik;
+ int temp_decik = 0;
int ret = acpi_active_trip_temp(adev, id, &temp_decik);
return thermal_temp(ret, temp_decik, ret_temp);
@@ -119,7 +119,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_active_trip_temp);
*/
int thermal_acpi_passive_trip_temp(struct acpi_device *adev, int *ret_temp)
{
- int temp_decik;
+ int temp_decik = 0;
int ret = acpi_passive_trip_temp(adev, &temp_decik);
return thermal_temp(ret, temp_decik, ret_temp);
@@ -139,7 +139,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_passive_trip_temp);
*/
int thermal_acpi_hot_trip_temp(struct acpi_device *adev, int *ret_temp)
{
- int temp_decik;
+ int temp_decik = 0;
int ret = acpi_hot_trip_temp(adev, &temp_decik);
return thermal_temp(ret, temp_decik, ret_temp);
@@ -158,7 +158,7 @@ EXPORT_SYMBOL_GPL(thermal_acpi_hot_trip_temp);
*/
int thermal_acpi_critical_trip_temp(struct acpi_device *adev, int *ret_temp)
{
- int temp_decik;
+ int temp_decik = 0;
int ret = acpi_critical_trip_temp(adev, &temp_decik);
return thermal_temp(ret, temp_decik, ret_temp);
--
2.39.2
next reply other threads:[~2024-02-22 10:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-22 10:57 Colin Ian King [this message]
2024-02-22 19:37 ` Rafael J. Wysocki
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