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Commit 7397aa48 authored by Russell King's avatar Russell King
Browse files

ARM: SWP emulation: only initialise on ARMv7 CPUs 



Previous CPUs do not have the ability to trap SWP instructions, so
it's pointless initialising this code there.

Tested-by: default avatarTony Lindgren <tony@atomide.com>
Acked-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent a11dd731

arch/arm/kernel/swp_emulate.c

+4 −0
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 
#include <linux/perf_event.h>



#include <asm/opcodes.h>

#include <asm/system_info.h>

#include <asm/traps.h>

#include <asm/uaccess.h>
@@ -266,6 +267,9 @@ static struct undef_hook swp_hook = { 
 */

static int __init swp_emulation_init(void)

{

	if (cpu_architecture() < CPU_ARCH_ARMv7)

		return 0;



#ifdef CONFIG_PROC_FS

	if (!proc_create("cpu/swp_emulation", S_IRUGO, NULL, &proc_status_fops))

		return -ENOMEM;