linux-kernel - Re: [PATCH 1/2] staging: android: checkpatch.pl fixes

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Date:	Sun, 21 Oct 2012 12:05:21 +1000
From:	Cruz Julian Bishop <cruzjbishop@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	Ken O'Brien <kernel@...obrien.org>, gregkh@...uxfoundation.org,
	swetland@...gle.com, arve@...roid.com, viro@...iv.linux.org.uk,
	dhowells@...hat.com, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] staging: android: checkpatch.pl fixes

On Sat, 2012-10-20 at 18:05 -0700, Joe Perches wrote:
> On Sat, 2012-10-20 at 23:33 +0100, Ken O'Brien wrote:
> > Fixed all instances of strings spanning multiple lines from checkpatch.pl.
> []
> > diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
> []
> > @@ -556,7 +556,7 @@ static int binder_update_page_range(struct binder_proc *proc, int allocate,
> >  		goto free_range;
> >  
> >  	if (vma == NULL) {
> > -		pr_err("binder: %d: binder_alloc_buf failed to "
> > +		pr_err("binder: %d: binder_alloc_buf failed to " \
> >  		       "map pages in userspace, no vma\n", proc->pid);
> 
> Hi Ken.
> 
> Nice try, but the "right" way to do this is to coalesce formats like:
> 
> 		pr_err("binder: %d: binder_alloc_buf failed to map pages in userspace, no vma\n",
> 		       proc->pid);
> 
> and ignore 80 column line lengths for these coalesced formats.

Going off that, is there currently any way to insert, say,
a comment that filters out the next line for checkpatch
errors?

For example,

/* checkpatch_ignore_(rulename) */
(Long line that can't be broken here)


> 
> An even better way is to add
> 
> #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
> 
> before any #include and change the format to:
> 
> 		pr_err("%d: binder_alloc_buf failed to map pages in userspace, no vma\n",
> 		       proc->pid);
> 
> 
> --
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