linux-kernel - [v2 5/9] hwmon: (nct7904) Fix incorrect register bit mapping of temperature alarm.

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Message-ID: <87e748a5f2e7d8e6ef69fa5acb177cb0a1474cb2.1560756733.git.amy.shih@advantech.com.tw>
Date:   Mon, 17 Jun 2019 08:12:30 +0000
From:   <Amy.Shih@...antech.com.tw>
To:     <she90122@...il.com>
CC:     <amy.shih@...antech.com.tw>, <oakley.ding@...antech.com.tw>,
        <jia.sui@...antech.com.cn>, Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        <linux-hwmon@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [v2 5/9] hwmon: (nct7904) Fix incorrect register bit mapping of temperature alarm.

From: "amy.shih" <amy.shih@...antech.com.tw>

In function nct7904_read_temp, the bit to shift for register
SMI_STS1_REG should be bit 1 & 3 & 5 &7 for TEMP_CH1~4.

Signed-off-by: amy.shih <amy.shih@...antech.com.tw>
---
Changes in v2:
- Fix incorrect register bit mapping of temperature alarm.

 drivers/hwmon/nct7904.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
index 402c1bb2a99f..95348eebe8e4 100644
--- a/drivers/hwmon/nct7904.c
+++ b/drivers/hwmon/nct7904.c
@@ -356,7 +356,7 @@ static int nct7904_read_temp(struct device *dev, u32 attr, int channel,
 					       SMI_STS1_REG);
 			if (ret < 0)
 				return ret;
-			*val = (ret >> (channel & 0x07)) & 1;
+			*val = (ret >> (((channel * 2) + 1) & 0x07)) & 1;
 		} else {
 			if ((channel - 5) < 4) {
 				ret = nct7904_read_reg(data, BANK_0,
-- 
2.17.1