random: use proper return types on get_random_{int,long}_wait()

[linux-2.6-microblaze.git] / include / linux / random.h

diff --git a/include/linux/random.h b/include/linux/random.h
index f673fbb..883bf9a 100644 (file)
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -12,45 +12,33 @@
 
 struct notifier_block;
 
-extern void add_device_randomness(const void *, size_t);
-extern void add_bootloader_randomness(const void *, size_t);
+void add_device_randomness(const void *, size_t);
+void add_bootloader_randomness(const void *, size_t);
+void add_input_randomness(unsigned int type, unsigned int code,
+                         unsigned int value) __latent_entropy;
+void add_interrupt_randomness(int irq) __latent_entropy;
+void add_hwgenerator_randomness(const void *buffer, size_t count, size_t entropy);
 
 #if defined(LATENT_ENTROPY_PLUGIN) && !defined(__CHECKER__)
 static inline void add_latent_entropy(void)
 {
-       add_device_randomness((const void *)&latent_entropy,
-                             sizeof(latent_entropy));
+       add_device_randomness((const void *)&latent_entropy, sizeof(latent_entropy));
 }
 #else
-static inline void add_latent_entropy(void) {}
+static inline void add_latent_entropy(void) { }
 #endif
 
-extern void add_input_randomness(unsigned int type, unsigned int code,
-                                unsigned int value) __latent_entropy;
-extern void add_interrupt_randomness(int irq) __latent_entropy;
-extern void add_hwgenerator_randomness(const void *buffer, size_t count,
-                                      size_t entropy);
 #if IS_ENABLED(CONFIG_VMGENID)
-extern void add_vmfork_randomness(const void *unique_vm_id, size_t size);
-extern int register_random_vmfork_notifier(struct notifier_block *nb);
-extern int unregister_random_vmfork_notifier(struct notifier_block *nb);
+void add_vmfork_randomness(const void *unique_vm_id, size_t size);
+int register_random_vmfork_notifier(struct notifier_block *nb);
+int unregister_random_vmfork_notifier(struct notifier_block *nb);
 #else
 static inline int register_random_vmfork_notifier(struct notifier_block *nb) { return 0; }
 static inline int unregister_random_vmfork_notifier(struct notifier_block *nb) { return 0; }
 #endif
 
-extern void get_random_bytes(void *buf, size_t nbytes);
-extern int wait_for_random_bytes(void);
-extern int __init rand_initialize(void);
-extern bool rng_is_initialized(void);
-extern int register_random_ready_notifier(struct notifier_block *nb);
-extern int unregister_random_ready_notifier(struct notifier_block *nb);
-extern size_t __must_check get_random_bytes_arch(void *buf, size_t nbytes);
-
-#ifndef MODULE
-extern const struct file_operations random_fops, urandom_fops;
-#endif
-
+void get_random_bytes(void *buf, size_t nbytes);
+size_t __must_check get_random_bytes_arch(void *buf, size_t nbytes);
 u32 get_random_u32(void);
 u64 get_random_u64(void);
 static inline unsigned int get_random_int(void)
@@ -82,11 +70,17 @@ static inline unsigned long get_random_long(void)
 
 static inline unsigned long get_random_canary(void)
 {
-       unsigned long val = get_random_long();
-
-       return val & CANARY_MASK;
+       return get_random_long() & CANARY_MASK;
 }
 
+unsigned long randomize_page(unsigned long start, unsigned long range);
+
+int __init random_init(const char *command_line);
+bool rng_is_initialized(void);
+int wait_for_random_bytes(void);
+int register_random_ready_notifier(struct notifier_block *nb);
+int unregister_random_ready_notifier(struct notifier_block *nb);
+
 /* Calls wait_for_random_bytes() and then calls get_random_bytes(buf, nbytes).
  * Returns the result of the call to wait_for_random_bytes. */
 static inline int get_random_bytes_wait(void *buf, size_t nbytes)
@@ -96,22 +90,20 @@ static inline int get_random_bytes_wait(void *buf, size_t nbytes)
        return ret;
 }
 
-#define declare_get_random_var_wait(var) \
-       static inline int get_random_ ## var ## _wait(var *out) { \
+#define declare_get_random_var_wait(name, ret_type) \
+       static inline int get_random_ ## name ## _wait(ret_type *out) { \
                int ret = wait_for_random_bytes(); \
                if (unlikely(ret)) \
                        return ret; \
-               *out = get_random_ ## var(); \
+               *out = get_random_ ## name(); \
                return 0; \
        }
-declare_get_random_var_wait(u32)
-declare_get_random_var_wait(u64)
-declare_get_random_var_wait(int)
-declare_get_random_var_wait(long)
+declare_get_random_var_wait(u32, u32)
+declare_get_random_var_wait(u64, u32)
+declare_get_random_var_wait(int, unsigned int)
+declare_get_random_var_wait(long, unsigned long)
 #undef declare_get_random_var
 
-unsigned long randomize_page(unsigned long start, unsigned long range);
-
 /*
  * This is designed to be standalone for just prandom
  * users, but for now we include it from <linux/random.h>
@@ -122,22 +114,10 @@ unsigned long randomize_page(unsigned long start, unsigned long range);
 #ifdef CONFIG_ARCH_RANDOM
 # include <asm/archrandom.h>
 #else
-static inline bool __must_check arch_get_random_long(unsigned long *v)
-{
-       return false;
-}
-static inline bool __must_check arch_get_random_int(unsigned int *v)
-{
-       return false;
-}
-static inline bool __must_check arch_get_random_seed_long(unsigned long *v)
-{
-       return false;
-}
-static inline bool __must_check arch_get_random_seed_int(unsigned int *v)
-{
-       return false;
-}
+static inline bool __must_check arch_get_random_long(unsigned long *v) { return false; }
+static inline bool __must_check arch_get_random_int(unsigned int *v) { return false; }
+static inline bool __must_check arch_get_random_seed_long(unsigned long *v) { return false; }
+static inline bool __must_check arch_get_random_seed_int(unsigned int *v) { return false; }
 #endif
 
 /*
@@ -161,8 +141,12 @@ static inline bool __init arch_get_random_long_early(unsigned long *v)
 #endif
 
 #ifdef CONFIG_SMP
-extern int random_prepare_cpu(unsigned int cpu);
-extern int random_online_cpu(unsigned int cpu);
+int random_prepare_cpu(unsigned int cpu);
+int random_online_cpu(unsigned int cpu);
+#endif
+
+#ifndef MODULE
+extern const struct file_operations random_fops, urandom_fops;
 #endif
 
 #endif /* _LINUX_RANDOM_H */