linux-kernel - Re: ADT746X: logical-bitwise & confusion in set_max_duty_at

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Message-ID: <47D4EFC1.1050403@tiscali.nl>
Date:	Mon, 10 Mar 2008 09:22:25 +0100
From:	Roel Kluin <12o3l@...cali.nl>
To:	benh@...nel.crashing.org
CC:	Colin Leroy <colin@...ino.net>,
	lkml <linux-kernel@...r.kernel.org>, linuxppc-dev@...abs.org
Subject: Re: ADT746X: logical-bitwise & confusion in set_max_duty_at_crit()

Benjamin Herrenschmidt wrote:
> On Mon, 2008-03-10 at 08:46 +0100, Colin Leroy wrote:
>> On Mon, 10 Mar 2008 01:04:33 +0100, Roel Kluin wrote:
>>
>>> logical-bitwise & confusion
>> Looks good to me, but I'm not really maintaining that anymore :-)
>> I'm not sure who does, Cc:ing Benjamin as he'll probably know.
> 
> Nobody is U suspect...
> 
> Send it to the list linuxppc-dev@...abs.org, it should be picked up
> anyway.
(linuxppc-dev CC'd)
---
logical-bitwise & confusion

Signed-off-by: Roel Kluin <12o3l@...cali.nl>
---
diff --git a/drivers/hwmon/adt7473.c b/drivers/hwmon/adt7473.c
index 9587869..8ea7da2 100644
--- a/drivers/hwmon/adt7473.c
+++ b/drivers/hwmon/adt7473.c
@@ -570,7 +570,7 @@ static ssize_t set_max_duty_at_crit(struct device *dev,
 	struct i2c_client *client = to_i2c_client(dev);
 	struct adt7473_data *data = i2c_get_clientdata(client);
 	int temp = simple_strtol(buf, NULL, 10);
-	temp = temp && 0xFF;
+	temp &= 0xFF;
 
 	mutex_lock(&data->lock);
 	data->max_duty_at_overheat = temp;

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