[v3,2/2] thermal: rcar_gen3_thermal: Remove temperature bound
diff mbox series

Message ID 20200117160554.3812787-3-niklas.soderlund+renesas@ragnatech.se
State Accepted
Delegated to: Daniel Lezcano
Headers show
Series
  • thermal: rcar_{gen3_}thermal: Remove temperature
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Commit Message

Niklas Söderlund Jan. 17, 2020, 4:05 p.m. UTC
The hardware manual states that the operation of the sensor is not
guaranteed with temperatures above 125°C, not that the readings are
invalid. Remove the bound check and try to deliver temperature readings
even if we are outside the guaranteed operation range.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
* Changes since v2
- s/ragne/range/

* Changes since v1
- Preserve the guaranteed operating range in a comment.
---
 drivers/thermal/rcar_gen3_thermal.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

Patch
diff mbox series

diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c
index 1460cf9d9f1c397b..72877bdc072daaed 100644
--- a/drivers/thermal/rcar_gen3_thermal.c
+++ b/drivers/thermal/rcar_gen3_thermal.c
@@ -182,9 +182,7 @@  static int rcar_gen3_thermal_get_temp(void *devdata, int *temp)
 				tsc->coef.a2);
 	mcelsius = FIXPT_TO_MCELSIUS(val);
 
-	/* Make sure we are inside specifications */
-	if ((mcelsius < MCELSIUS(-40)) || (mcelsius > MCELSIUS(125)))
-		return -EIO;
+	/* Guaranteed operating range is -40C to 125C. */
 
 	/* Round value to device granularity setting */
 	*temp = rcar_gen3_thermal_round(mcelsius);