[PATCH 4.9 106/144] thermal: exynos: fix setting rising_threshold for Exynos5433

From: Greg Kroah-Hartman
Date: Wed Aug 01 2018 - 13:32:04 EST


4.9-stable review patch. If anyone has any objections, please let me know.

------------------

From: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>

[ Upstream commit 8bfc218d0ebbabcba8ed2b8ec1831e0cf1f71629 ]

Add missing clearing of the previous value when setting rising
temperature threshold.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Signed-off-by: Eduardo Valentin <edubezval@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/thermal/samsung/exynos_tmu.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -598,6 +598,7 @@ static int exynos5433_tmu_initialize(str
threshold_code = temp_to_code(data, temp);

rising_threshold = readl(data->base + rising_reg_offset);
+ rising_threshold &= ~(0xff << j * 8);
rising_threshold |= (threshold_code << j * 8);
writel(rising_threshold, data->base + rising_reg_offset);