diff options
Diffstat (limited to 'arch/arm/include/asm/uaccess.h')
| -rw-r--r-- | arch/arm/include/asm/uaccess.h | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index d20d78c34b94..2fcbec9c306c 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -56,21 +56,6 @@ extern int __put_user_bad(void); #ifdef CONFIG_MMU /* - * We use 33-bit arithmetic here. Success returns zero, failure returns - * addr_limit. We take advantage that addr_limit will be zero for KERNEL_DS, - * so this will always return success in that case. - */ -#define __range_ok(addr, size) ({ \ - unsigned long flag, roksum; \ - __chk_user_ptr(addr); \ - __asm__(".syntax unified\n" \ - "adds %1, %2, %3; sbcscc %1, %1, %0; movcc %0, #0" \ - : "=&r" (flag), "=&r" (roksum) \ - : "r" (addr), "Ir" (size), "0" (TASK_SIZE) \ - : "cc"); \ - flag; }) - -/* * This is a type: either unsigned long, if the argument fits into * that type, or otherwise unsigned long long. */ @@ -241,15 +226,12 @@ extern int __put_user_8(void *, unsigned long long); #else /* CONFIG_MMU */ -#define __addr_ok(addr) ((void)(addr), 1) -#define __range_ok(addr, size) ((void)(addr), 0) - #define get_user(x, p) __get_user(x, p) #define __put_user_check __put_user_nocheck #endif /* CONFIG_MMU */ -#define access_ok(addr, size) (__range_ok(addr, size) == 0) +#include <asm-generic/access_ok.h> #ifdef CONFIG_CPU_SPECTRE /* |