linux-kernel - Re: [PATCH] staging: fsl-mc: fix coding stye errors

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Message-ID: <1484642850.9538.7.camel@perches.com>
Date:   Tue, 17 Jan 2017 00:47:30 -0800
From:   Joe Perches <joe@...ches.com>
To:     Dan Carpenter <dan.carpenter@...cle.com>,
        Dhananjay Balan <dhananjay@...qz.com>
Cc:     Stuart Yoder <stuart.yoder@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] staging: fsl-mc: fix coding stye errors

On Tue, 2017-01-17 at 11:27 +0300, Dan Carpenter wrote:
> On Tue, Jan 17, 2017 at 09:11:28AM +0100, Dhananjay Balan wrote:
> > Split line at boolean operator.
> > 
> > Error was reported by checkpatch.pl as
> > WARNING: Avoid multiple line dereference - prefer 'mc_msi_domain->host_data'
[]
> > diff --git a/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c b/drivers/staging/fsl-mc/bus/irq-gic-v3-its-fsl-mc-msi.c
[]
> > @@ -94,8 +94,8 @@ int __init its_fsl_mc_msi_init(void)
> >  			continue;
> >  		}
> >  
> > -		WARN_ON(mc_msi_domain->
> > -				host_data != &its_fsl_mc_msi_domain_info);
> > +		WARN_ON(mc_msi_domain->host_data !=
> > +						&its_fsl_mc_msi_domain_info);
> 
> Better to line it up like this:
> 
> 		WARN_ON(mc_msi_domain->host_data !=
> 			&its_fsl_mc_msi_domain_info);

At 81 chars, it might be better on a single line instead.

		WARN_ON(mc_msi_domain->host_data != &its_fsl_mc_msi_domain_info);

It also might be better to shorten some of the identifiers.