netdev - Re: [PATCH 1/6] drivers: usb: remove usage of list iterator past the loop body

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Date:   Mon, 28 Feb 2022 16:18:44 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Jakob Koschel <jakobkoschel@...il.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Arnd Bergman <arnd@...db.de>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Mike Rapoport <rppt@...nel.org>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Brian Johannesmeyer <bjohannesmeyer@...il.com>,
        Cristiano Giuffrida <c.giuffrida@...nl>,
        "Bos, H.J." <h.j.bos@...nl>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
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Subject: Re: [PATCH 1/6] drivers: usb: remove usage of list iterator past the
 loop body

On Mon, Feb 28, 2022 at 01:03:36PM +0100, Jakob Koschel wrote:
> >> @@ -954,7 +957,6 @@ net2272_dequeue(struct usb_ep *_ep, struct usb_request *_req)
> >> 		dev_dbg(ep->dev->dev, "unlink (%s) pio\n", _ep->name);
> >> 		net2272_done(ep, req, -ECONNRESET);
> >> 	}
> >> -	req = NULL;
> > 
> > Another unrelated change.  These are all good changes but send them as
> > separate patches.
> 
> You are referring to the req = NULL, right?

Yes.

> 
> I've changed the use of 'req' in the same function and assumed that I can
> just remove the unnecessary statement. But if it's better to do separately
> I'll do that.
> 

These are all changes which made me pause during my review to figure out
why they were necessary.  The line between what is a related part of a
patch is a bit vague and some maintainers will ask you to add or subtract
from a patch depending on their individual tastes.  I don't really have
an exact answer, but I felt like this patch needs to be subtracted from.

Especially if there is a whole chunk of the patch which can be removed,
then to me, that obviously should be in a different patch.

regards,
dan carpenter