xref: /linux/include/asm-generic/flat.h (revision 6fdcba32711044c35c0e1b094cbd8f3f0b4472c9)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_GENERIC_FLAT_H
3 #define _ASM_GENERIC_FLAT_H
4 
5 #include <linux/uaccess.h>
6 
7 static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags,
8 		u32 *addr)
9 {
10 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
11 	return copy_from_user(addr, rp, 4) ? -EFAULT : 0;
12 #else
13 	return get_user(*addr, rp);
14 #endif
15 }
16 
17 static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel)
18 {
19 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
20 	return copy_to_user(rp, &addr, 4) ? -EFAULT : 0;
21 #else
22 	return put_user(addr, rp);
23 #endif
24 }
25 
26 #endif /* _ASM_GENERIC_FLAT_H */
27