[PATCH linux dev-4.10 3/3] hwmon: (w83773g) Fix fault detection and reporting

Lei YU mine260309 at gmail.com
Wed Jan 17 15:04:02 AEDT 2018


From: Guenter Roeck <linux at roeck-us.net>

Smatch reports:

drivers/hwmon/w83773g.c:105
	get_fault() warn: shift has higher precedence than mask

Code analysis shows that the code is indeed wrong.
Fix it, and while we are at it, drop unnecessary typecast.

Fixes: 86a10c802362 ("hwmon: Add W83773G driver")
Cc: Lei YU <mine260309 at gmail.com>
Reviewed-by: Lei YU <mine260309 at gmail.com>
Signed-off-by: Guenter Roeck <linux at roeck-us.net>
---
 drivers/hwmon/w83773g.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/w83773g.c b/drivers/hwmon/w83773g.c
index 0b97c28..e858093 100644
--- a/drivers/hwmon/w83773g.c
+++ b/drivers/hwmon/w83773g.c
@@ -102,7 +102,7 @@ static int get_fault(struct regmap *regmap, int index, long *val)
 	if (ret < 0)
 		return ret;
 
-	*val = (u8)regval & 0x04 >> 2;
+	*val = (regval & 0x04) >> 2;
 	return 0;
 }
 
-- 
1.9.1



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