linux-kernel - Re: [PATCH] teach checkpatch.pl about list_for

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Date:	Thu, 3 Jan 2008 12:23:50 +0100
From:	"pHilipp Zabel" <philipp.zabel@...il.com>
To:	"Christer Weinigel" <christer@...nigel.se>
Cc:	"Andy Whitcroft" <apw@...ibm.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] teach checkpatch.pl about list_for_each

On Dec 2, 2007 1:03 PM, Christer Weinigel <christer@...nigel.se> wrote:
> Hi Andy,
>
> you seem to be the last person messing around with checkpatch.pl so I'm
> addressing this to you. :-)
>
> checkpatch complains about the following:
>
> WARNING: no space between function name and open parenthesis '('
> #520: FILE: drivers/spi/spi_s3c24xx_dma.c:478:
> +       list_for_each_entry (transfer, &message->transfers, transfer_list) {
>
> which I think is a bit bogus since it actually is a for statement in
> disguise.  The following patch adds list_for_each to the list of things
> that look like functions that it shouldn't complain about.
>
> By the way, what is the consensus on lines over 80 characters?
> checkpatch complains about the following:
>
> WARNING: line over 80 characters
> #762: FILE: drivers/spi/spi_s3c24xx_dma.c:720:
> +       printk(KERN_INFO "S3C24xx SPI DMA driver (c) 2007 Nordnav Technologies AB\n");
>
> I can of course break this into:
>
>         printk(KERN_INFO "S3C24xx SPI DMA driver (c) 2007 Nordnav "
>                "Technologies AB\n");

I'd not split it in the middle of a name or phrase if possible.
        printk(KERN_INFO "S3C24xx SPI DMA driver"
                "(c) 2007 Nordnav Technologies AB\n");
but ...

> but in my opinion that becomes more even unreadable.  Would it be
> possible to add a special case so that checkpatch ignores long strings
> that go beyond 80 characters?  Do you think it is a good idea?

... in this case
       pr_info("S3C24xx SPI DMA driver (c) 2007 Nordnav Technologies AB\n");
might just push it under the limit.

cheers
Philipp
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