Subject: Re: [PATCH 1/2] P4080/eLBC: Make Freescale elbc interrupt common to elbc devices

From: "tiejun.chen" <[email-masked]>
Date: Tue, 19 Oct 2010 09:35:05 +0800

Scott Wood wrote:
> On Mon, 18 Oct 2010 16:55:49 +0800
> "tiejun.chen" <[email-masked]> wrote:
> 
>> Looks you always iounmap(fsl_lbc_ctrl_dev->regs) on position 'err' but here
>> of_iomap() is already failed you should skip iounmap() fsl_lbc_ctrl_dev->regs
>> again. So you should improve that as the following on 'err', or layout 'err' in
>> gain.
>> ------
>> 	if(fsl_lbc_ctrl_dev->regs)
>> 		iounmap(fsl_lbc_ctrl_dev->regs);
>>
> 
> It looks like iounmap(NULL) is a no-op, just like kfree(NULL).
> 

Absolutely, I know what you mean :)

But I think we should take care of every line as one normal progress/rule. That
will make us understand easily, and maybe we also would benefit a little good
performance from those codes.

Tiejun

> -Scott
> 
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