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Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0417-bcm2711_thermal-Don-t-clamp-temperature-at-zero.patch')
-rw-r--r--target/linux/bcm27xx/patches-5.15/950-0417-bcm2711_thermal-Don-t-clamp-temperature-at-zero.patch24
1 files changed, 24 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0417-bcm2711_thermal-Don-t-clamp-temperature-at-zero.patch b/target/linux/bcm27xx/patches-5.15/950-0417-bcm2711_thermal-Don-t-clamp-temperature-at-zero.patch
new file mode 100644
index 0000000000..9bec99f490
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0417-bcm2711_thermal-Don-t-clamp-temperature-at-zero.patch
@@ -0,0 +1,24 @@
+From d9f70317612c5b3b558fd4b52c57e52832d34d52 Mon Sep 17 00:00:00 2001
+From: Dom Cobley <popcornmix@gmail.com>
+Date: Thu, 8 Jul 2021 13:48:11 +0100
+Subject: [PATCH] bcm2711_thermal: Don't clamp temperature at zero
+
+The temperature sensor is valid below zero and the linux framework is happy with it.
+
+See: https://www.raspberrypi.org/forums/viewtopic.php?f=98&t=315382
+Signed-off-by: Dom Cobley <popcornmix@gmail.com>
+---
+ drivers/thermal/broadcom/bcm2711_thermal.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/thermal/broadcom/bcm2711_thermal.c
++++ b/drivers/thermal/broadcom/bcm2711_thermal.c
+@@ -52,7 +52,7 @@ static int bcm2711_get_temp(void *data,
+ /* Convert a HW code to a temperature reading (millidegree celsius) */
+ t = slope * val + offset;
+
+- *temp = t < 0 ? 0 : t;
++ *temp = t;
+
+ return 0;
+ }