[PATCH 6.1 014/473] net: smc91x: Fix m68k kernel compilation for ColdFire CPU

Greg Kroah-Hartman
2024-06-06T14:12:22Z

From: Thorsten Blum <thorsten.blum@toblux.com>

commit 5eefb477d21a26183bc3499aeefa991198315a2d upstream.

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.

Use ioread16be() and iowrite16be() to resolve the error.

Cc: stable@vger.kernel.org
Fixes: d97cf70af097 ("m68k: use asm-generic/io.h for non-MMU io access functions")
Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240510113054.186648-2-thorsten.blum@toblux.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/ethernet/smsc/smc91x.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/smsc/smc91x.h
+++ b/drivers/net/ethernet/smsc/smc91x.h
@@ -175,8 +175,8 @@ static inline void mcf_outsw(void *a, un
writew(*wp++, a);
}

-#define SMC_inw(a, r) _swapw(readw((a) + (r)))
-#define SMC_outw(lp, v, a, r) writew(_swapw(v), (a) + (r))
+#define SMC_inw(a, r) ioread16be((a) + (r))
+#define SMC_outw(lp, v, a, r) iowrite16be(v, (a) + (r))
#define SMC_insw(a, r, p, l) mcf_insw(a + r, p, l)
#define SMC_outsw(a, r, p, l) mcf_outsw(a + r, p, l)