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m68k: select CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS

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All supported CPUs other than the old dragonball and in theory other 68000
derivatives use the include/linux/unaligned/access_ok.h implementation
for accessing unaligned variables, so presumably this works everywhere.

However, m68k never selects CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS,
so none of the other conditionals in the kernel get the optimized
implementation.

Select this based on CPU_HAS_NO_UNALIGNED to make the two settings
always match, and then use the generic version of the header.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Arnd Bergmann 2021-05-08 00:07:49 +02:00
parent 94528b7078
commit 3aec1db05d
2 changed files with 1 additions and 19 deletions
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1
arch/m68k/Kconfig
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@ -21,6 +21,7 @@ config M68K
select HAVE_AOUT if MMU
select HAVE_ASM_MODVERSIONS
select HAVE_DEBUG_BUGVERBOSE
select HAVE_EFFICIENT_UNALIGNED_ACCESS if !CPU_HAS_NO_UNALIGNED
select HAVE_FUTEX_CMPXCHG if MMU && FUTEX
select HAVE_IDE
select HAVE_MOD_ARCH_SPECIFIC

19
arch/m68k/include/asm/unaligned.h
View File

@ -1,19 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_M68K_UNALIGNED_H
#define _ASM_M68K_UNALIGNED_H
#ifdef CONFIG_CPU_HAS_NO_UNALIGNED
#include <asm-generic/unaligned.h>
#else
/*
* The m68k can do unaligned accesses itself.
*/
#include <linux/unaligned/access_ok.h>
#include <linux/unaligned/generic.h>
#define get_unaligned __get_unaligned_be
#define put_unaligned __put_unaligned_be
#endif
#endif /* _ASM_M68K_UNALIGNED_H */