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From: Thomas Klein <osstklei@de.ibm.com>
To: Stephen Hemminger <shemminger@osdl.org>
Cc: Thomas Klein <tklein@de.ibm.com>,
	Jan-Bernd Themann <themann@de.ibm.com>,
	netdev@vger.kernel.org,
	linux-kernel <linux-kernel@vger.kernel.org>,
	Christoph Raisch <raisch@de.ibm.com>,
	linux-ppc <linuxppc-dev@ozlabs.org>,
	Marcus Eder <meder@de.ibm.com>,
	Alexey Dobriyan <adobriyan@gmail.com>
Subject: Re: [2.6.19 PATCH 4/7] ehea: ethtool interface
Date: Mon, 21 Aug 2006 11:53:31 +0200	[thread overview]
Message-ID: <44E9829B.7010503@de.ibm.com> (raw)
In-Reply-To: <20060818104547.5ad1352f@localhost.localdomain>

Stephen Hemminger wrote:
> On Fri, 18 Aug 2006 17:41:26 +0200
> Thomas Klein <osstklei@de.ibm.com> wrote:
> 
>> Hi Alexey,
>>
>> first of all thanks a lot for the extensive review.
>>
>>
>> Alexey Dobriyan wrote:
>>>> +	u64 hret = H_HARDWARE;
>>> Useless assignment here and everywhere.
>>>
>> Initializing returncodes to errorstate is a cheap way to prevent
>> accidentally returning (uninitalized) success returncodes which
>> can lead to catastrophic misbehaviour.
> 
> That is old thinking. Current compilers do live/dead analysis
> and tell you about this at compile time which is better than relying
> on default behavior at runtime.

Understood. I reworked the returncode handling and removed the
unnecessary initializations.

Thanks for pointing this out.

Thomas

WARNING: multiple messages have this Message-ID (diff)
From: Thomas Klein <osstklei@de.ibm.com>
To: Stephen Hemminger <shemminger@osdl.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>,
	Jan-Bernd Themann <ossthema@de.ibm.com>,
	netdev@vger.kernel.org, Christoph Raisch <raisch@de.ibm.com>,
	Jan-Bernd Themann <themann@de.ibm.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-ppc <linuxppc-dev@ozlabs.org>,
	Marcus Eder <meder@de.ibm.com>, Thomas Klein <tklein@de.ibm.com>
Subject: Re: [2.6.19 PATCH 4/7] ehea: ethtool interface
Date: Mon, 21 Aug 2006 11:53:31 +0200	[thread overview]
Message-ID: <44E9829B.7010503@de.ibm.com> (raw)
In-Reply-To: <20060818104547.5ad1352f@localhost.localdomain>

Stephen Hemminger wrote:
> On Fri, 18 Aug 2006 17:41:26 +0200
> Thomas Klein <osstklei@de.ibm.com> wrote:
> 
>> Hi Alexey,
>>
>> first of all thanks a lot for the extensive review.
>>
>>
>> Alexey Dobriyan wrote:
>>>> +	u64 hret = H_HARDWARE;
>>> Useless assignment here and everywhere.
>>>
>> Initializing returncodes to errorstate is a cheap way to prevent
>> accidentally returning (uninitalized) success returncodes which
>> can lead to catastrophic misbehaviour.
> 
> That is old thinking. Current compilers do live/dead analysis
> and tell you about this at compile time which is better than relying
> on default behavior at runtime.

Understood. I reworked the returncode handling and removed the
unnecessary initializations.

Thanks for pointing this out.

Thomas

  reply	other threads:[~2006-08-21  9:53 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-08-18 11:33 [2.6.19 PATCH 4/7] ehea: ethtool interface Jan-Bernd Themann
2006-08-18 11:33 ` Jan-Bernd Themann
2006-08-18 14:05 ` Alexey Dobriyan
2006-08-18 14:05   ` Alexey Dobriyan
2006-08-18 15:41   ` Thomas Klein
2006-08-18 15:41     ` Thomas Klein
2006-08-18 17:45     ` Stephen Hemminger
2006-08-18 17:45       ` Stephen Hemminger
2006-08-21  9:53       ` Thomas Klein [this message]
2006-08-21  9:53         ` Thomas Klein
2006-08-19  6:18     ` Michael Ellerman
2006-08-19  6:18       ` Michael Ellerman
2006-08-19  6:18       ` Michael Ellerman
2006-08-19  6:48       ` Andy Gay
2006-08-19  6:48         ` Andy Gay
2006-08-19  8:41         ` Michael Ellerman
2006-08-19  8:41           ` Michael Ellerman
2006-08-19 13:47           ` Arnd Bergmann
2006-08-19 13:47             ` Arnd Bergmann
2006-08-19 14:40         ` Jeff Garzik
2006-08-19 14:40           ` Jeff Garzik
2006-08-21 10:53   ` Thomas Klein
2006-08-21 10:53     ` Thomas Klein
  -- strict thread matches above, loose matches on Subject: below --
2006-08-22 12:54 Jan-Bernd Themann
2006-08-22 12:54 ` Jan-Bernd Themann
2006-08-23  8:57 Jan-Bernd Themann
2006-08-23  8:57 ` Jan-Bernd Themann
2006-09-04 10:40 Jan-Bernd Themann
2006-09-04 10:40 ` Jan-Bernd Themann
2006-09-06 13:33 Jan-Bernd Themann
2006-09-06 13:33 ` Jan-Bernd Themann

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