linux-kernel - Re: [PATCH 1/4] drivers/misc/sgi-gru: remove unused variable

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Message-ID: <20150903044012.GA3965@sudip-pc>
Date:	Thu, 3 Sep 2015 10:10:12 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Dimitri Sivanich <sivanich@....com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] drivers/misc/sgi-gru: remove unused variable

On Wed, Sep 02, 2015 at 09:42:04AM -0500, Dimitri Sivanich wrote:
> On Wed, Sep 02, 2015 at 04:54:55PM +0530, Sudip Mukherjee wrote:
> > These variables were only assigned some value and were never used.
> > 
> > Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
> > ---
> > 
<snip>
> > +	int i;
> +
> + 	if ((GRU_NUM_TFM * GRU_CACHE_LINE_BYTES) > (ubufend - ubuf))
> +		return -EFBIG;
Just a minor (or major) doubt.
The function returns GRU_NUM_TFM * GRU_CACHE_LINE_BYTES and the for loop
is also running till GRU_NUM_TFM so I am assuming that the function can
handle buffer till size of GRU_NUM_TFM * GRU_CACHE_LINE_BYTES. So the
error -EFBIG should occur when the buffer is more than this. Then
shouldn't it be:
if ((GRU_NUM_TFM * GRU_CACHE_LINE_BYTES) < (ubufend - ubuf))
	return -EFBIG;

or i am wrong in interpreting it?

regards
sudip
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