linux-kernel - Re: [PATCH 1/5] debugfs: pass NULL as the last parameter of debugfs_print

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Date:	Sat, 27 Oct 2012 08:07:15 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Yan Hong <clouds.yan@...il.com>
Cc:	linux-kernel@...r.kernel.org, Alessandro Rubini <rubini@...dd.com>
Subject: Re: [PATCH 1/5] debugfs: pass NULL as the last parameter of
 debugfs_print_regs32()

On Sat, Oct 27, 2012 at 04:05:25PM +0800, Yan Hong wrote:
> If 'prefix' is not used, pass NULL instead of empty string as the
> last parameter of debugfs_print_regs32().
> 
> Cc: Alessandro Rubini <rubini@...dd.com>
> 
> Signed-off-by: Yan Hong <clouds.yan@...il.com>
> ---
> 
> This function is only used (twice) by the author of it, and the
> 'prefix' feature is never used. But it's a well-documented debugfs
> API. It's added one year ago and appeared in many documents. I still
> prefer to let this API stay unchanged and treat the empty string as
> typo.

What "documents" did this appear in?  If the parameter isn't being used,
please, just delete it.

greg k-h
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