diff mbox series

[thermal:,thermal/next] thermal/drivers/bcm2711: Don't clamp temperature at zero

Message ID 165296425912.4207.4920256466367626942.tip-bot2@tip-bot2 (mailing list archive)
State Not Applicable, archived
Headers show
Series [thermal:,thermal/next] thermal/drivers/bcm2711: Don't clamp temperature at zero | expand

Commit Message

tip-bot2 for Nam Cao May 19, 2022, 12:44 p.m. UTC
The following commit has been merged into the thermal/next branch of thermal:

Commit-ID:     106e0121e243de4da7d634338089a68a8da2abe9
Gitweb:        https://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux.git//106e0121e243de4da7d634338089a68a8da2abe9
Author:        Stefan Wahren <stefan.wahren@i2se.com>
AuthorDate:    Tue, 12 Apr 2022 21:54:23 +02:00
Committer:     Daniel Lezcano <daniel.lezcano@linaro.org>
CommitterDate: Thu, 19 May 2022 12:11:51 +02:00

thermal/drivers/bcm2711: Don't clamp temperature at zero

The thermal sensor on BCM2711 is capable of negative temperatures, so don't
clamp the measurements at zero. Since this was the only use for variable t,
drop it.

This change based on a patch by Dom Cobley, who also tested the fix.

Fixes: 59b781352dc4 ("thermal: Add BCM2711 thermal driver")
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220412195423.104511-1-stefan.wahren@i2se.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 drivers/thermal/broadcom/bcm2711_thermal.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/thermal/broadcom/bcm2711_thermal.c b/drivers/thermal/broadcom/bcm2711_thermal.c
index 1ec57d9..e9bef5c 100644
--- a/drivers/thermal/broadcom/bcm2711_thermal.c
+++ b/drivers/thermal/broadcom/bcm2711_thermal.c
@@ -38,7 +38,6 @@  static int bcm2711_get_temp(void *data, int *temp)
 	int offset = thermal_zone_get_offset(priv->thermal);
 	u32 val;
 	int ret;
-	long t;
 
 	ret = regmap_read(priv->regmap, AVS_RO_TEMP_STATUS, &val);
 	if (ret)
@@ -50,9 +49,7 @@  static int bcm2711_get_temp(void *data, int *temp)
 	val &= AVS_RO_TEMP_STATUS_DATA_MSK;
 
 	/* Convert a HW code to a temperature reading (millidegree celsius) */
-	t = slope * val + offset;
-
-	*temp = t < 0 ? 0 : t;
+	*temp = slope * val + offset;
 
 	return 0;
 }