[PATCH 4.19.y-cip 02/10] thermal: rcar_gen3_thermal: Remove temperature bound


Biju Das <biju.das.jz@...>
 

From: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>

commit 0f510a2457cbbba18a98492bab1bf540be57ebd1 upstream.

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>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20200117160554.3812787-3-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
drivers/thermal/rcar_gen3_thermal.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/thermal/rcar_gen3_thermal.c b/drivers/thermal/rcar_gen3_thermal.c
index 42ec69d29540..e7a0c7fc9897 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);
--
2.17.1

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