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-rw-r--r--include/linux/rar_register.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/rar_register.h b/include/linux/rar_register.h
index ffa805780f85..5c6118189363 100644
--- a/include/linux/rar_register.h
+++ b/include/linux/rar_register.h
@@ -34,11 +34,27 @@
34 34
35struct rar_device; 35struct rar_device;
36 36
37#if defined(CONFIG_RAR_REGISTER)
37int register_rar(int num, 38int register_rar(int num,
38 int (*callback)(unsigned long data), unsigned long data); 39 int (*callback)(unsigned long data), unsigned long data);
39void unregister_rar(int num); 40void unregister_rar(int num);
40int rar_get_address(int rar_index, dma_addr_t *start, dma_addr_t *end); 41int rar_get_address(int rar_index, dma_addr_t *start, dma_addr_t *end);
41int rar_lock(int rar_index); 42int rar_lock(int rar_index);
43#else
44extern void unregister_rar(int num) { }
45extern int rar_lock(int rar_index) { return -EIO; }
46
47extern inline int register_rar(int num,
48 int (*callback)(unsigned long data), unsigned long data)
49{
50 return -ENODEV;
51}
52
53extern int rar_get_address(int rar_index, dma_addr_t *start, dma_addr_t *end)
54{
55 return -ENODEV;
56}
57#endif /* RAR_REGISTER */
42 58
43#endif /* __KERNEL__ */ 59#endif /* __KERNEL__ */
44#endif /* _RAR_REGISTER_H */ 60#endif /* _RAR_REGISTER_H */