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Date: Mon, 9 May 2022 15:44:27 +0300 From: Dan Carpenter <dan.carpenter@...cle.com> To: Ozgur <ozgurk@...e.org> Cc: Colin Ian King <colin.i.king@...il.com>, Martin Schiller <ms@....tdt.de>, "David S . Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, linux-x25@...r.kernel.org, netdev@...r.kernel.org, kernel-janitors@...r.kernel.org, lkml <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] x25: remove redundant pointer dev On Mon, May 09, 2022 at 04:57:40AM +0400, Ozgur wrote: > On Mon, May 9, 2022 at 1:45 AM Colin Ian King <colin.i.king@...il.com> wrote: > > > > Pointer dev is being assigned a value that is never used, the assignment > > and the variable are redundant and can be removed. Also replace null check > > with the preferred !ptr idiom. > > > > Hello, > > *dev pointer is device assign global linked list and shouldnt be > touched by the driver so *dev wont get any value right? Why are you talking about "*dev" instead of "dev"? > Also seems to use this while network interface is initializing because > some activation information and stats information is also kept here, > for example, open *dev will call when ifconfig is called from. > > route, link, forward these inital activate and move all values with > net_device *dev? It's not clear what you are saying... When I review these kinds of patches I ask: 1) Does Colin's patch change run time behavior? Obviosly not. 2) Is the current code buggy? Sometimes when there is a static checker warning it indicates a typo in the code. I do not see a bug in the original code before Colin's patch. 3) What was the author's original intent? This code predates git but I think the "dev" was just a going to be a shorter name to type than "x25->neighbour->dev". I honestly have no idea what you are saying. At first I thought you might be saying that this is stub code. But that seems wrong. Also we do not allow stub code in the kernel. regards, dan carpenter
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