[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <98259c2f-b44a-467e-8854-48641984e468@lunn.ch>
Date: Thu, 9 May 2024 22:36:57 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Thorsten Blum <thorsten.blum@...lux.com>
Cc: Nicolas Pitre <nico@...xnic.net>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
Arnd Bergmann <arnd@...db.de>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: smc91x: Fix m68k kernel compilation for ColdFire CPU
On Thu, May 09, 2024 at 02:17:14PM +0200, Thorsten Blum wrote:
> Compiling the m68k kernel with support for the ColdFire CPU family fails
> with the following error:
>
> In file included from drivers/net/ethernet/smsc/smc91x.c:80:
> drivers/net/ethernet/smsc/smc91x.c: In function ‘smc_reset’:
> drivers/net/ethernet/smsc/smc91x.h:160:40: error: implicit declaration of function ‘_swapw’; did you mean ‘swap’? [-Werror=implicit-function-declaration]
> 160 | #define SMC_outw(lp, v, a, r) writew(_swapw(v), (a) + (r))
> | ^~~~~~
> drivers/net/ethernet/smsc/smc91x.h:904:25: note: in expansion of macro ‘SMC_outw’
> 904 | SMC_outw(lp, x, ioaddr, BANK_SELECT); \
> | ^~~~~~~~
> drivers/net/ethernet/smsc/smc91x.c:250:9: note: in expansion of macro ‘SMC_SELECT_BANK’
> 250 | SMC_SELECT_BANK(lp, 2);
> | ^~~~~~~~~~~~~~~
> cc1: some warnings being treated as errors
>
> The function _swapw() was removed in commit d97cf70af097 ("m68k: use
> asm-generic/io.h for non-MMU io access functions"), but is still used in
> drivers/net/ethernet/smsc/smc91x.h.
>
> Re-adding the previously deleted _swapw() function resolves the error.
This seems like the wrong fix.
commit d97cf70af09721ef416c61faa44543e3b84c9a55
Author: Greg Ungerer <gerg@...ux-m68k.org>
Date: Fri Mar 23 23:39:10 2018 +1000
m68k: use asm-generic/io.h for non-MMU io access functions
There is nothing really special about the non-MMU m68k IO access functions.
So we can easily switch to using the asm-generic/io.h functions.
So it rather than put something back which there is an aim to remove,
please find the generic replacement. This _swapw() swaps a 16 bit
word. The generic for that is swab16().
I'm also surprised it took 6 years to find this. Has something else
changed recently?
Andrew
---
pw-bot: cr
Powered by blists - more mailing lists