diff options
Diffstat (limited to 'arch/arm/include/asm/flat.h')
| -rw-r--r-- | arch/arm/include/asm/flat.h | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/arch/arm/include/asm/flat.h b/arch/arm/include/asm/flat.h index acf1d14b89a6..29d3a1524bce 100644 --- a/arch/arm/include/asm/flat.h +++ b/arch/arm/include/asm/flat.h @@ -5,12 +5,31 @@ #ifndef __ARM_FLAT_H__ #define __ARM_FLAT_H__ +#include <linux/uaccess.h> + #define flat_argvp_envp_on_stack() 1 #define flat_old_ram_flag(flags) (flags) #define flat_reloc_valid(reloc, size) ((reloc) <= (size)) -#define flat_get_addr_from_rp(rp, relval, flags, persistent) \ - ({ unsigned long __val; __get_user_unaligned(__val, rp); __val; }) -#define flat_put_addr_at_rp(rp, val, relval) __put_user_unaligned(val, rp) + +static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, + u32 *addr, u32 *persistent) +{ +#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS + return copy_from_user(addr, rp, 4) ? -EFAULT : 0; +#else + return get_user(*addr, rp); +#endif +} + +static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) +{ +#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS + return copy_to_user(rp, &addr, 4) ? -EFAULT : 0; +#else + return put_user(addr, rp); +#endif +} + #define flat_get_relocate_addr(rel) (rel) #define flat_set_persistent(relval, p) 0 |