2  * hw_random/core.c: HWRNG core API
33 static struct hwrng *current_rng;
50 		 "current hwrng entropy estimation per 1024 bits of input -- obsolete, use rng_quality instead");
53 		 "default maximum entropy content of hwrng per 1024 bits of input");
56 static int hwrng_init(struct hwrng *rng);
59 static inline int rng_get_data(struct hwrng *rng, u8 *buffer, size_t size,
67 static void add_early_randomness(struct hwrng *rng)  in add_early_randomness()
82 	struct hwrng *rng = container_of(kref, struct hwrng, ref);  in cleanup_rng()
90 static int set_current_rng(struct hwrng *rng)  in set_current_rng()
103 	/* if necessary, start hwrng thread */  in set_current_rng()
105 		hwrng_fill = kthread_run(hwrng_fillfn, NULL, "hwrng");  in set_current_rng()
126 /* Returns ERR_PTR(), NULL or refcounted hwrng */
127 static struct hwrng *get_current_rng_nolock(void)  in get_current_rng_nolock()
135 static struct hwrng *get_current_rng(void)  in get_current_rng()
137 	struct hwrng *rng;  in get_current_rng()
148 static void put_rng(struct hwrng *rng)  in put_rng()
160 static int hwrng_init(struct hwrng *rng)  in hwrng_init()
192 static inline int rng_get_data(struct hwrng *rng, u8 *buffer, size_t size,  in rng_get_data()
218 	struct hwrng *rng;  in rng_dev_read()
305 	.nodename	= "hwrng",
312 	struct hwrng *rng, *new_rng = NULL;  in enable_best_rng()
342 	struct hwrng *rng, *old_rng, *new_rng;  in rng_current_store()
378 	struct hwrng *rng;  in rng_current_show()
395 	struct hwrng *rng;  in rng_available_show()
423 	struct hwrng *rng;  in rng_quality_show()
506 		struct hwrng *rng;  in hwrng_fillfn()
542 int hwrng_register(struct hwrng *rng)  in hwrng_register()
545 	struct hwrng *tmp;  in hwrng_register()
605 void hwrng_unregister(struct hwrng *rng)  in hwrng_unregister()
607 	struct hwrng *old_rng, *new_rng;  in hwrng_unregister()
643 	hwrng_unregister(*(struct hwrng **)res);  in devm_hwrng_release()
648 	struct hwrng **r = res;  in devm_hwrng_match()
656 int devm_hwrng_register(struct device *dev, struct hwrng *rng)  in devm_hwrng_register()
658 	struct hwrng **ptr;  in devm_hwrng_register()
677 void devm_hwrng_unregister(struct device *dev, struct hwrng *rng)  in devm_hwrng_unregister()
683 long hwrng_msleep(struct hwrng *rng, unsigned int msecs)  in hwrng_msleep()
691 long hwrng_yield(struct hwrng *rng)  in hwrng_yield()