162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _ASM_GENERIC_FLAT_H 362306a36Sopenharmony_ci#define _ASM_GENERIC_FLAT_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/uaccess.h> 662306a36Sopenharmony_ci 762306a36Sopenharmony_cistatic inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, 862306a36Sopenharmony_ci u32 *addr) 962306a36Sopenharmony_ci{ 1062306a36Sopenharmony_ci#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS 1162306a36Sopenharmony_ci return copy_from_user(addr, rp, 4) ? -EFAULT : 0; 1262306a36Sopenharmony_ci#else 1362306a36Sopenharmony_ci return get_user(*addr, rp); 1462306a36Sopenharmony_ci#endif 1562306a36Sopenharmony_ci} 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_cistatic inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) 1862306a36Sopenharmony_ci{ 1962306a36Sopenharmony_ci#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS 2062306a36Sopenharmony_ci return copy_to_user(rp, &addr, 4) ? -EFAULT : 0; 2162306a36Sopenharmony_ci#else 2262306a36Sopenharmony_ci return put_user(addr, rp); 2362306a36Sopenharmony_ci#endif 2462306a36Sopenharmony_ci} 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ci#endif /* _ASM_GENERIC_FLAT_H */ 27