linux-kernel - [PATCH 4.9 106/144] thermal: exynos: fix setting rising

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Date:   Wed,  1 Aug 2018 18:52:13 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 106/144] thermal: exynos: fix setting rising_threshold for Exynos5433

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

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

From: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>

[ Upstream commit 8bfc218d0ebbabcba8ed2b8ec1831e0cf1f71629 ]

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

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Signed-off-by: Eduardo Valentin <edubezval@...il.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 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);