linux-kernel - Re: [PATCH 1/2] staging: octeon: delete driver

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Message-ID: <20191211072233.GB2070@kadam>
Date:   Wed, 11 Dec 2019 10:22:33 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Aaro Koskinen <aaro.koskinen@....fi>
Cc:     Guenter Roeck <linux@...ck-us.net>, devel@...verdev.osuosl.org,
        Branden Bonaby <brandonbonaby94@...il.com>,
        YueHaibing <yuehaibing@...wei.com>,
        Paul Burton <paulburton@...nel.org>,
        Julia Lawall <julia.lawall@...6.fr>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Florian Westphal <fw@...len.de>, linux-kernel@...r.kernel.org,
        "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        Giovanni Gherdovich <bobdc9664@...nam.cz>,
        Sandro Volery <sandro@...ery.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Valery Ivanov <ivalery111@...il.com>,
        Petr Štetiar <ynezz@...e.cz>,
        "David S. Miller" <davem@...emloft.net>,
        Wambui Karuga <wambui.karugax@...il.com>
Subject: Re: [PATCH 1/2] staging: octeon: delete driver

On Tue, Dec 10, 2019 at 11:48:49PM +0200, Aaro Koskinen wrote:
> On Tue, Dec 10, 2019 at 12:15:15PM -0800, Guenter Roeck wrote:
> > On Tue, Dec 10, 2019 at 09:46:59PM +0200, Aaro Koskinen wrote:
> > > On Tue, Dec 10, 2019 at 01:01:20PM +0100, Greg Kroah-Hartman wrote:
> > > > I have no idea :(
> > > 
> > > It's stated in the TODO file you are deleting (visible in your
> > > patch): "This driver is functional and supports Ethernet on
> > > OCTEON+/OCTEON2/OCTEON3 chips at least up to CN7030."
> > > 
> > > This includes e.g. some D-Link routers and Uniquiti EdgeRouters. You
> > > can check from /proc/cpuinfo if you are running on this MIPS SoC.
> > 
> > It also results in "mips:allmodconfig" build failures in mainline
> > and is for that reason being marked as BROKEN. Unfortunately,
> > misguided attempts to clean it up had the opposite effect.
> 
> This was because of stubs hack added by someone - people who do not run
> or care about the hardware can now break it for others with their
> silly x86 "compile test"s.

Compile tests are nice in theory for finding static analysis bugs but
often they introduce static checker false positives because we don't
initialize *param variables in the stub functions.

And those compat stubs in particular were a headache to review.  We
broke the build a couple times, but we *almost* broke the build a *lot*
of times...

regards,
dan carpenter