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Commit 0567f5fa authored by Ard Biesheuvel's avatar Ard Biesheuvel
Browse files

asm-generic: allow generic unaligned access if the arch supports it 



Switch the default unaligned access method to 'hardware implemented'
if HAVE_EFFICIENT_UNALIGNED_ACCESS is set.

Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
parent c9eaa447

include/asm-generic/unaligned.h

+13 −8
Original line number Diff line number Diff line
@@ -4,22 +4,27 @@ 
/*

 * This is the most generic implementation of unaligned accesses

 * and should work almost anywhere.

 *

 * If an architecture can handle unaligned accesses in hardware,

 * it may want to use the linux/unaligned/access_ok.h implementation

 * instead.

 */

#include <asm/byteorder.h>



/* Set by the arch if it can handle unaligned accesses in hardware. */

#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS

# include <linux/unaligned/access_ok.h>

#endif



#if defined(__LITTLE_ENDIAN)

# ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS

#  include <linux/unaligned/le_struct.h>

#  include <linux/unaligned/be_byteshift.h>

# endif

# include <linux/unaligned/generic.h>

# define get_unaligned	__get_unaligned_le

# define put_unaligned	__put_unaligned_le

#elif defined(__BIG_ENDIAN)

# ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS

#  include <linux/unaligned/be_struct.h>

#  include <linux/unaligned/le_byteshift.h>

# endif

# include <linux/unaligned/generic.h>

# define get_unaligned	__get_unaligned_be

# define put_unaligned	__put_unaligned_be