linux-kernel - Re: [PATCH wireless/arlan] Replace logical- by bit-and

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Message-ID: <4786849D.4010504@redhat.com>
Date:	Thu, 10 Jan 2008 15:48:29 -0500
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
CC:	Roel Kluin <12o3l@...cali.nl>, linville@...driver.com,
	lkml <linux-kernel@...r.kernel.org>,
	linux-wireless@...r.kernel.org
Subject: Re: [PATCH wireless/arlan] Replace logical- by bit-and

On 01/10/2008 03:28 PM, Randy Dunlap wrote:
> On Thu, 10 Jan 2008 20:15:53 +0100 Roel Kluin wrote:
> 
>> Totally untested patch below from linus' git tree. The && is incorrect, right?
>>
>> from drivers/net/wireless/arlan.h:390:
>> #define ARLAN_POWER             0x40
>> #define ARLAN_ACCESS            0x80
>>
>> Replace logical and by bit-and
>>
>> Signed-off-by: Roel Kluin <12o3l@...cali.nl>
>> ---
>> diff --git a/drivers/net/wireless/arlan.h b/drivers/net/wireless/arlan.h
>> index 3ed1df7..7b7498f 100644
>> --- a/drivers/net/wireless/arlan.h
>> +++ b/drivers/net/wireless/arlan.h
>> @@ -485,7 +485,7 @@ struct arlan_private {
>>  #define clearClearInterrupt(dev){\
>>     writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_CLEAR_INTERRUPT);}
>>  #define setPowerOff(dev){\
>> -   writeControlRegister(dev,readControlRegister(dev) | (ARLAN_POWER && ARLAN_ACCESS));\
>> +   writeControlRegister(dev, readControlRegister(dev) | (ARLAN_POWER & ARLAN_ACCESS));\
> 
> eh?  How does that help?
> 
> 0x80 && 0x40 -> 0

1
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