linux-kernel - Re: [PATCH 21/32] dmaengine: ste_dma40: Also report the number of logical channels

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Message-ID: <20130424083509.GF17416@gmail.com>
Date:	Wed, 24 Apr 2013 09:35:09 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	Vinod Koul <vinod.koul@...el.com>, Rabin Vincent <rabin@....in>,
	linus.walleij@...ricsson.com, arnd@...db.de,
	linux-kernel@...r.kernel.org,
	Per Forlin <per.forlin@...ricsson.com>,
	Dan Williams <djbw@...com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 21/32] dmaengine: ste_dma40: Also report the number of
 logical channels

On Mon, 22 Apr 2013, Russell King - ARM Linux wrote:

> On Mon, Apr 22, 2013 at 11:37:15AM +0100, Lee Jones wrote:
> > On Mon, 22 Apr 2013, Vinod Koul wrote:
> > 
> > > On Mon, Apr 22, 2013 at 11:14:55AM +0100, Lee Jones wrote:
> > > > On Mon, 22 Apr 2013, Vinod Koul wrote:
> > > > 
> > > > > On Thu, Apr 18, 2013 at 11:12:03AM +0100, Lee Jones wrote:
> > > > > > +	dev_info(&pdev->dev, "hardware revision: %d @ 0x%x with "
> > > > > > +		"%d physical channels and %d logical channels\n",
> > > > > > +		rev, res->start, num_phy_chans, num_log_chans);
> > > > > Splitting log messages across lines is bad idea and sacrifces readablity... also
> > > > > wasnt splitting logging to multiple lines emit checkpatch warn
> 
> Yes, but for a different reason...
> 
> > > > You also get a check-patch error if your lines are over 80 chars.
> > > No, you get a warn
> > 
> > You only get a warning for this too:
> > 
> >  WARNING: quoted string split across lines
> > #33: FILE: drivers/dma/ste_dma40.c:3204:
> > +	dev_info(&pdev->dev, "hardware revision: %d @ 0x%x with "
> > +		"%d physical channels and %d logical channels\n",
> 
> From coding style: "However, never break user-visible strings such as
> printk messages, because that breaks the ability to grep for them."
> 
> You can argue that you wouldn't grep for the above string - but consider
> if you grepped for "hardware revision.*channels" to try and find the
> above message, which would be a reasonable thing to try if you got lots
> of hits on just "hardware revision".

Okay, this I understand. I'll fixup.

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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