linux-kernel - Re: [PATCH net-next] net: sunhme: move asm includes to below linux includes

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Message-ID: <ZC240XCeYCaSCu0X@casper.infradead.org>
Date:   Wed, 5 Apr 2023 19:07:13 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Simon Horman <horms@...nel.org>
Cc:     Sean Anderson <seanga2@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        kernel test robot <lkp@...el.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Linux Memory Management List <linux-mm@...ck.org>,
        linux-m68k@...ts.linux-m68k.org
Subject: Re: [PATCH net-next] net: sunhme: move asm includes to below linux
 includes

On Wed, Apr 05, 2023 at 08:02:37PM +0200, Simon Horman wrote:
> On Wed, Apr 05, 2023 at 01:34:11PM -0400, Sean Anderson wrote:
> > On 4/5/23 13:29, Simon Horman wrote:
> > > A recent rearrangement of includes has lead to a problem on m68k
> > > as flagged by the kernel test robot.
> > > 
> > > Resolve this by moving the block asm includes to below linux includes.
> > > A side effect i that non-Sparc asm includes are now immediately
> > > before Sparc asm includes, which seems nice.
> > > 
> > > Using sparse v0.6.4 I was able to reproduce this problem as follows
> > > using the config provided by the kernel test robot:
> > > 
> > > $ wget https://download.01.org/0day-ci/archive/20230404/202304041748.0sQc4K4l-lkp@intel.com/config
> > > $ cp config .config
> > > $ make ARCH=m68k oldconfig
> > > $ make ARCH=m68k C=2 M=drivers/net/ethernet/sun
> > >     CC [M]  drivers/net/ethernet/sun/sunhme.o
> > >   In file included from drivers/net/ethernet/sun/sunhme.c:19:
> > >   ./arch/m68k/include/asm/irq.h:78:11: error: expected ‘;’ before ‘void’
> > >      78 | asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
> > >         |           ^~~~~
> > >         |           ;
> > >   ./arch/m68k/include/asm/irq.h:78:40: warning: ‘struct pt_regs’ declared inside parameter list will not be visible outside of this definition or declaration
> > >      78 | asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
> > >         |                                        ^~~~~~~
> > 
> > This seems like a problem with the header. m68k's asm/irq.h should include linux/interrupt.h before its declarations.
> 
> Hi Sean,
> 
> I do see your point. But TBH I'm unsure which way to go on this one.
> Geert, do you have any input?

We always include linux/* headers before asm/*.  The "sorting" of
headers in this way was inappropriate.