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authorLinus Torvalds <torvalds@linux-foundation.org>2021-07-02 12:43:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-07-02 12:43:40 -0700
commit4cad67197989c81417810b89f09a3549b75a2441 (patch)
tree33cefbddefbdcf95b3ee385a79cbc22ba77101dd /arch/m68k
parent406254918b232db198ed60f5bf1f8b84d96bca00 (diff)
parent803f4e1eab7a8938ba3a3c30dd4eb5e9eeef5e63 (diff)
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Merge tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm/unaligned.h unification from Arnd Bergmann: "Unify asm/unaligned.h around struct helper The get_unaligned()/put_unaligned() helpers are traditionally architecture specific, with the two main variants being the "access-ok.h" version that assumes unaligned pointer accesses always work on a particular architecture, and the "le-struct.h" version that casts the data to a byte aligned type before dereferencing, for architectures that cannot always do unaligned accesses in hardware. Based on the discussion linked below, it appears that the access-ok version is not realiable on any architecture, but the struct version probably has no downsides. This series changes the code to use the same implementation on all architectures, addressing the few exceptions separately" Link: https://lore.kernel.org/lkml/75d07691-1e4f-741f-9852-38c0b4f520bc@synopsys.com/ Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363 Link: https://lore.kernel.org/lkml/20210507220813.365382-14-arnd@kernel.org/ Link: git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git unaligned-rework-v2 Link: https://lore.kernel.org/lkml/CAHk-=whGObOKruA_bU3aPGZfoDqZM1_9wBkwREp0H0FgR-90uQ@mail.gmail.com/ * tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: asm-generic: simplify asm/unaligned.h asm-generic: uaccess: 1-byte access is always aligned netpoll: avoid put_unaligned() on single character mwifiex: re-fix for unaligned accesses apparmor: use get_unaligned() only for multi-byte words partitions: msdos: fix one-byte get_unaligned() asm-generic: unaligned always use struct helpers asm-generic: unaligned: remove byteshift helpers powerpc: use linux/unaligned/le_struct.h on LE power7 m68k: select CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS sh: remove unaligned access for sh4a openrisc: always use unaligned-struct header asm-generic: use asm-generic/unaligned.h for most architectures
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/Kconfig1
-rw-r--r--arch/m68k/include/asm/unaligned.h26
2 files changed, 1 insertions, 26 deletions
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 05a729c6ad7f..96989ad46f66 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -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
diff --git a/arch/m68k/include/asm/unaligned.h b/arch/m68k/include/asm/unaligned.h
deleted file mode 100644
index 98c8930d3d35..000000000000
--- a/arch/m68k/include/asm/unaligned.h
+++ /dev/null
@@ -1,26 +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 <linux/unaligned/be_struct.h>
-#include <linux/unaligned/le_byteshift.h>
-#include <linux/unaligned/generic.h>
-
-#define get_unaligned __get_unaligned_be
-#define put_unaligned __put_unaligned_be
-
-#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 */