From: Martin Tůma <martin.tuma@digiteqautomotive.com>
Date: Fri, 23 Jan 2026 12:14:58 +0000 (+0100)
Subject: media:pci:mgb4: Fixed negative hwmon temperatures processing
X-Git-Tag: v7.1-rc1~169^2~176
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=0924f7ed0c17c9aee75c269d8ed825b8fbfb3fa3;p=thirdparty%2Fkernel%2Fstable.git

media:pci:mgb4: Fixed negative hwmon temperatures processing

The "magic" temperature formula must be computed using a signed integer for
negative temperatures to work properly.

Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
---

diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c
index a7351a4693863..d23d854581c5f 100644
--- a/drivers/media/pci/mgb4/mgb4_core.c
+++ b/drivers/media/pci/mgb4/mgb4_core.c
@@ -84,7 +84,8 @@ static int temp_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
 		     int channel, long *val)
 {
 	struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
-	u32 val10, raw;
+	u32 raw;
+	int val10;
 
 	if (type != hwmon_temp || attr != hwmon_temp_input)
 		return -EOPNOTSUPP;