linux-kernel - Re: [PATCH] mtd: parsers: bcm63xx: Do not make it modular

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Date:   Mon, 12 Oct 2020 06:24:14 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Miquel Raynal <miquel.raynal@...tlin.com>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        linux-mtd@...ts.infradead.org, Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Álvaro Fernández Rojas <noltari@...il.com>,
        Jonas Gorski <jonas.gorski@...il.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mtd: parsers: bcm63xx: Do not make it modular

On Mon, Oct 12, 2020 at 09:04:20AM +0200, Miquel Raynal wrote:
> Hi Guenter,
> 
> Guenter Roeck <linux@...ck-us.net> wrote on Sun, 11 Oct 2020 07:14:47
> -0700:
> 
> > On Tue, Sep 29, 2020 at 10:27:21AM -0700, Florian Fainelli wrote:
> > > With commit 91e81150d388 ("mtd: parsers: bcm63xx: simplify CFE
> > > detection"), we generate a reference to fw_arg3 which is the fourth
> > > firmware/command line argument on MIPS platforms. That symbol is not
> > > exported and would cause a linking failure.
> > > 
> > > The parser is typically necessary to boot a BCM63xx-based system anyway
> > > so having it be part of the kernel image makes sense, therefore make it
> > > 'bool' instead of 'tristate'.
> > > 
> > > Fixes: 91e81150d388 ("mtd: parsers: bcm63xx: simplify CFE detection")
> > > Signed-off-by: Florian Fainelli <f.fainelli@...il.com>  
> > 
> > What happened with this patch ? The build failure is still seen in mainline
> > and in next-20201009.
> 
> It has been applied on mtd/next:
> https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git/log/?h=mtd/next
> (I don't remember when though)

Hmm, lets see ...

Ah, I see: mips:allmodconfig now fails to build in -next for a different
reason.

Error log:
In file included from <command-line>:
arch/mips/mm/init.c: In function 'mem_init':
include/linux/compiler_types.h:319:38: error: call to '__compiletime_assert_331'
	declared with attribute error: BUILD_BUG_ON failed: IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT)

I'll send a separate report on that (if it wasn't reported before).

Anyway, any reason for not applying this fix to mainline, ie why the
mips:allmodconfig build failure was not fixed in v5.9 ?

Guenter