linux-kernel - [PATCH 1/2] thermal: exynos: Check the range of temperature code

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Date:	Wed, 28 Nov 2012 09:48:17 +0900
From:	Jonghwan Choi <jhbird.choi@...sung.com>
To:	'Jonghwan Choi' <jhbird.choi@...sung.com>,
	'open list' <linux-kernel@...r.kernel.org>
Cc:	'Amit Daniel Kachhap' <amit.kachhap@...aro.org>,
	'Sachin Kamat' <sachin.kamat@...aro.org>,
	'Zhang Rui' <rui.zhang@...el.com>
Subject: [PATCH 1/2] thermal: exynos: Check the range of temperature code

The temperature code should range between 46 and 146.

Signed-off-by: Jonghwan Choi <jhbird.choi@...sung.com>
---
 drivers/thermal/exynos_thermal.c |   21 ++++++++++++++-------
 1 files changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/thermal/exynos_thermal.c
b/drivers/thermal/exynos_thermal.c
index 6dd29e4..dc2ad6c 100644
--- a/drivers/thermal/exynos_thermal.c
+++ b/drivers/thermal/exynos_thermal.c
@@ -530,14 +530,21 @@ out:
 static int code_to_temp(struct exynos_tmu_data *data, u8 temp_code)
 {
        struct exynos_tmu_platform_data *pdata = data->pdata;
-       int temp;
+       int min, max, temp;

-       if (data->soc == SOC_ARCH_EXYNOS4210)
-               /* temp_code should range between 75 and 175 */
-               if (temp_code < 75 || temp_code > 175) {
-                       temp = -ENODATA;
-                       goto out;
-               }
+       if (data->soc == SOC_ARCH_EXYNOS4210) {
+               min = 75;
+               max = 175;
+       } else {
+               min = 46;
+               max = 146;
+       }
+
+       /* temp_code should range between min and max */
+       if (temp_code < min || temp_code > max) {
+               temp = -ENODATA;
+               goto out;
+       }

        switch (pdata->cal_type) {
        case TYPE_TWO_POINT_TRIMMING:
--
1.7.4.1

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