18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_GENERIC_FLAT_H 38c2ecf20Sopenharmony_ci#define _ASM_GENERIC_FLAT_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/uaccess.h> 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_cistatic inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, 88c2ecf20Sopenharmony_ci u32 *addr) 98c2ecf20Sopenharmony_ci{ 108c2ecf20Sopenharmony_ci#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS 118c2ecf20Sopenharmony_ci return copy_from_user(addr, rp, 4) ? -EFAULT : 0; 128c2ecf20Sopenharmony_ci#else 138c2ecf20Sopenharmony_ci return get_user(*addr, rp); 148c2ecf20Sopenharmony_ci#endif 158c2ecf20Sopenharmony_ci} 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_cistatic inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) 188c2ecf20Sopenharmony_ci{ 198c2ecf20Sopenharmony_ci#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS 208c2ecf20Sopenharmony_ci return copy_to_user(rp, &addr, 4) ? -EFAULT : 0; 218c2ecf20Sopenharmony_ci#else 228c2ecf20Sopenharmony_ci return put_user(addr, rp); 238c2ecf20Sopenharmony_ci#endif 248c2ecf20Sopenharmony_ci} 258c2ecf20Sopenharmony_ci 268c2ecf20Sopenharmony_ci#endif /* _ASM_GENERIC_FLAT_H */ 27